[29628] | 1 | "use strict";
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[29622] | 2 |
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| 3 | var progressVal = 0;
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| 4 |
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[29626] | 5 | var show_progress = 5;
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[29622] | 6 |
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[29787] | 7 | var start_hist_delay = 1000; // used to be 4000
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[29628] | 8 | var mini_delay = 300;
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[29626] | 9 |
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[29628] | 10 |
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[29806] | 11 | //var hasLocalStorage = (typeof(Storage) !== "undefined"); // ****
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| 12 | var hasLocalStorage = false;
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[29787] | 13 |
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[29628] | 14 | var quantHSLHistogramArray;
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| 15 |
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[29787] | 16 | //var saveOnServer=true;
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| 17 | var saveOnServer=false;
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| 18 | var retrieveFromServer=true;
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[29628] | 19 |
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[29787] | 20 |
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| 21 | function runlength_encode(int_array) {
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| 22 |
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| 23 | var array_len = int_array.length;
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| 24 |
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| 25 | if (array_len<2) {
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| 26 | console.warn("runlength_encode(): unable to run-length encode array of length " + array_len);
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| 27 | console.warn("returning null");
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| 28 | return null;
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| 29 | }
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| 30 |
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| 31 | var int_array_rle = new Array();
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| 32 |
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| 33 |
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| 34 | var lock_val=int_array[0];
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| 35 | var next_val=int_array[1];
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| 36 | var i = 1;
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| 37 |
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| 38 | while (i<array_len) {
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| 39 | var c=1;
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| 40 | while (next_val==lock_val) {
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| 41 | c++;
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| 42 | var next_pos = i+c-1;
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| 43 | if (next_pos<array_len) {
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| 44 | next_val = int_array[next_pos];
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| 45 | }
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| 46 | else {
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| 47 | // hit end of array
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| 48 | break;
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| 49 | }
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| 50 | }
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| 51 | // come out of a run-length sequence of same val
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| 52 | // next_val is one past the run-length sequence
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| 53 |
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| 54 | int_array_rle.push(c);
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| 55 | int_array_rle.push(lock_val);
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| 56 |
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| 57 | i+=c;
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| 58 |
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| 59 | if (i<array_len) {
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| 60 | lock_val = next_val;
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| 61 | next_val = int_array[i];
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| 62 | }
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| 63 | else {
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| 64 | break;
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| 65 | }
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| 66 | }
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| 67 |
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| 68 | return int_array_rle;
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| 69 | }
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| 70 |
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| 71 |
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| 72 |
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| 73 | function runlength_decode(int_array_rle) {
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| 74 |
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| 75 | var array_rle_len = int_array_rle.length;
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| 76 |
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| 77 | if (array_rle_len<2) {
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| 78 | console.warn("runlength_decode(): unable to run-length decode array of length " + array_rle_len);
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| 79 | console.warn("returning null");
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| 80 | return null;
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| 81 | }
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| 82 |
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| 83 | var int_array = new Array();
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| 84 | for (var i=0; i<array_rle_len; i+=2){
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| 85 | var rep = int_array_rle[i];
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| 86 | var val = int_array_rle[i+1];
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| 87 | for (var r=0; r<rep; r++) {
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| 88 | int_array.push(val);
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| 89 | }
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| 90 | }
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| 91 |
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| 92 | return int_array;
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| 93 | }
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| 94 |
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| 95 |
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| 96 |
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| 97 | function arrays_identical(int_array1, int_array2) {
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| 98 |
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| 99 | var array_len1 = int_array1.length;
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| 100 | var array_len2 = int_array2.length;
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| 101 |
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| 102 | if (array_len1 != array_len2) {
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| 103 | console.warn("arrays_identical(): array lengths differ, array1("+array_len1+") vs array2(" + array_len2 + ")");
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| 104 | return false;
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| 105 | }
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| 106 |
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| 107 | var all_ident = true;
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| 108 |
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| 109 | for (var i=0; i<array_len1; i++){
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| 110 | if (int_array1[i] != int_array2[i]) {
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| 111 | all_ident = false;
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| 112 | break;
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | return all_ident;
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| 117 | }
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| 118 |
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| 119 |
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[29622] | 120 | function drawImage(imageObj, canvasId) {
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| 121 | var imgCanvas = document.getElementById(canvasId),
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| 122 | context, imageData, data,
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| 123 | imageX = 0, imageY = 0,
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| 124 | imageWidth = imageObj.width,
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| 125 | imageHeight = imageObj.height;
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[29626] | 126 |
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[29622] | 127 | context = imgCanvas.getContext('2d');
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| 128 | context.drawImage(imageObj, imageX, imageY, imageWidth, imageHeight);
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| 129 | imageData = context.getImageData(imageX, imageY, imageWidth, imageHeight);
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[29626] | 130 |
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[29622] | 131 | return imageData;
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| 132 | }
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| 133 |
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[29806] | 134 |
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| 135 |
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| 136 | function createHSLHistogramFromCanvasData(imageData, imageWidth, imageHeight, quant)
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[29626] | 137 | {
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| 138 | var i;
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[29622] | 139 |
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[29626] | 140 | var outputLength = quant * quant * quant;
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| 141 | var outputArray = new Array(outputLength);
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| 142 | for (i=0; i<outputLength; i++) {
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| 143 | outputArray[i] = 0;
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| 144 | }
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| 145 |
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| 146 | var total = 0.0;
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| 147 |
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| 148 | var log2 = Math.log(2);
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| 149 |
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| 150 | //calculate value to shift by (log base 2)
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| 151 |
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| 152 | var shift_sat = Math.floor(Math.log(quant)/log2);
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| 153 | var shift_hue = Math.floor(Math.log(quant*quant)/log2);
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| 154 |
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| 155 | //console.log("bit-shift sat = " + shift_sat);
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| 156 | //console.log("bit-shift hue = " + shift_hue);
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| 157 |
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| 158 | var data = imageData.data;
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| 159 |
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| 160 | //Loop through each pixel
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| 161 | var y,p;
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[29806] | 162 | for (y=0,p=0; y<imageHeight; y++) {
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[29628] | 163 | var x;
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[29806] | 164 | for (x=0; x<imageWidth; x++,p+=4) {
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[29626] | 165 | // convert 4 byte data value into a colour pixel
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| 166 | var rgb_c = new RGBColour(data[p],data[p+1],data[p+2],data[p+3]/255.0);
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| 167 | var hsl = new rgb_c.getHSL();
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| 168 |
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| 169 | // express h,s and b in the range 0..1
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| 170 |
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| 171 | var h = hsl.h / 360.0;
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| 172 | var s = hsl.s / 100.0;
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| 173 | var b = hsl.l / 100.0;
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| 174 |
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| 175 | var result = (Math.floor(h * (quant - 1)) << shift_hue)
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| 176 | | (Math.floor(s * (quant - 1)) << shift_sat)
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| 177 | | Math.floor(b * (quant - 1));
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| 178 |
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| 179 | //number of opaque pixels
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| 180 | var count = hsl.a; // 'a' is naturally in the range 0..1
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| 181 |
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| 182 | //add to the total number of opaque pixels
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| 183 | total += count;
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| 184 |
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| 185 | //add the frequency of each colour to the histogram
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| 186 | outputArray[result] += count;
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[29628] | 187 | }
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[29626] | 188 | }
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| 189 |
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[29806] | 190 | if (total == 0) {
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| 191 | // entire image must have been blank
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| 192 | // make total '1' to stop NaN being generated
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| 193 | total = 1;
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| 194 | }
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| 195 |
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[29626] | 196 | //Normalise the histogram, based on the number of opaque pixels
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| 197 | for (i=0; i<outputArray.length; i++) {
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| 198 | outputArray[i] = outputArray[i] / total;
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| 199 | }
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| 200 |
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[29806] | 201 | return outputArray;
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| 202 | }
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| 203 |
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| 204 |
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| 205 | function createHSLHistogram(imageObj, quant)
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| 206 | {
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| 207 | if (!$('#hsl_canvas').length) {
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| 208 | $('<canvas>', {id: 'hsl_canvas'}).hide().appendTo('body');
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| 209 | }
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| 210 |
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| 211 | var imageData = drawImage(imageObj,'hsl_canvas');
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| 212 |
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| 213 | var outputArray = createHSLHistogramFromCanvasData(imageData,imageObj.width,imageObj.height,quant);
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| 214 |
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[29787] | 215 | /*
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| 216 | if (saveOnServer) {
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[29806] | 217 | console.log("Saving HSV quantized histogram on server: " + imageObj.title.toLowerCase())
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[29787] | 218 | //console.log("outputArray = " + JSON.stringify(outputArray));
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| 219 |
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[29806] | 220 | var jsonFilename = imageObj.title.toLowerCase() + ".json";
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[29787] | 221 | var data = { jsonFilename: jsonFilename, jsonData: JSON.stringify(outputArray)};
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| 222 |
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[29806] | 223 | console.log("Saving colour histogram data for " + imageObj.title.toLowerCase());
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[29787] | 224 | $.ajax({
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| 225 | type: "POST",
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| 226 | url: "../similarity-2d/save-json-data.jsp",
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| 227 | data: data
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| 228 | });
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| 229 | }
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| 230 | */
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| 231 |
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[29626] | 232 | return outputArray;
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| 233 | }
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| 234 |
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| 235 | var flag_comparison_array = Array(2);
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| 236 | var clicked_on_count = 0;
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| 237 |
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| 238 | function quantizedColourHistogramComparison(quant_colour_hist1,quant_colour_hist2)
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| 239 | {
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| 240 | // Assumes both histograms are of the same length
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| 241 |
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| 242 | var i;
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| 243 | var quant_product = 0.0;
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| 244 |
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| 245 | //Loop through and compare the histograms
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| 246 | for (i=0; i<quant_colour_hist1.length; i++) {
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| 247 | //take the overlap
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| 248 | quant_product += Math.min(quant_colour_hist1[i], quant_colour_hist2[i]);
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| 249 |
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| 250 | // consider replacing with abs for difference
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| 251 | }
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| 252 |
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[29906] | 253 | //console.log("Product for HSL histogram: " + quant_product);
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[29626] | 254 |
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[29806] | 255 | return quant_product;
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[29626] | 256 | }
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| 257 |
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| 258 |
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[29622] | 259 | function displayFlags(img_list,$displayDiv,$progressArea,$progressBar)
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| 260 | {
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[29625] | 261 | var img_list_len = img_list.length;
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| 262 |
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| 263 | if (img_list_len==0) {
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| 264 | return;
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| 265 | }
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| 266 | else if (img_list_len>show_progress) {
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| 267 | $progressArea.slideDown();
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| 268 | }
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| 269 |
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[29628] | 270 | img_list.sort();
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| 271 |
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[29622] | 272 | var root_img_re = /^.*\/(.*?)\..*?$/;
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| 273 |
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| 274 | var progress_step = 100.0 / img_list_len;
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| 275 |
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| 276 | var callback_count = 0;
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| 277 |
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[29625] | 278 | var i;
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[29622] | 279 | for (i=0; i<img_list.length; i++) {
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| 280 | var img_url = img_list[i];
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| 281 | var img_matches = root_img_re.exec(img_url);
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| 282 | var title = img_matches[1];
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| 283 |
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| 284 | var imageObj = new Image();
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[29906] | 285 |
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[29626] | 286 | imageObj.onload = function() {
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[29622] | 287 | callback_count++;
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| 288 | progressVal += progress_step;
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| 289 | $progressBar.progressbar('value',progressVal);
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| 290 |
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| 291 | if (callback_count == img_list_len) {
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[29625] | 292 | if (img_list_len>show_progress) {
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[29626] | 293 | progressVal = 100;
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| 294 | $progressBar.progressbar('value',progressVal);
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| 295 | //$progressArea.slideUp();
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| 296 |
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| 297 | // Now move on and start computing colour histograms
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| 298 | setTimeout(function()
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[29628] | 299 | { doneDisplayFlags(img_list,$progressArea,$progressBar); }
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| 300 | ,start_hist_delay);
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[29625] | 301 | }
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[29622] | 302 | }
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| 303 | };
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[29626] | 304 |
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[29628] | 305 |
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| 306 | /*
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| 307 | $("h2").live('mousedown', function(e) {
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| 308 | if( (e.which == 1) ) {
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| 309 | alert("left button");
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| 310 | }if( (e.which == 3) ) {
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| 311 | alert("right button");
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| 312 | }else if( (e.which == 2) ) {
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| 313 | alert("middle button");
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| 314 | }
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| 315 | e.preventDefault();
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| 316 | }).live('contextmenu', function(e){
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| 317 | e.preventDefault();
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| 318 | });
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| 319 | */
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| 320 |
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| 321 | imageObj.onclick = function(e) {
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[29626] | 322 | // Store result of HSL quantization in the image object/tag
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| 323 | if (!this.quantHSLHist) {
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| 324 | // Only need to compute this if it is not already stored in the object/tag
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| 325 | this.quantHSLHist = createHSLHistogram(this,16);
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| 326 | console.log(this.quantHSLHist);
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| 327 | }
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| 328 |
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[29628] | 329 | if (e.which == 1 ) {
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| 330 | // Left => use in comparison pair
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| 331 | flag_comparison_array[clicked_on_count] = this.quantHSLHist;
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| 332 |
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| 333 | clicked_on_count++;
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| 334 | if (clicked_on_count==2) {
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| 335 | // trigger comparison
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[29906] | 336 | alert("Similarity score: " + quantizedColourHistogramComparison(flag_comparison_array[0],flag_comparison_array[1]) + "%");
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[29628] | 337 | clicked_on_count=0;
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| 338 | }
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[29626] | 339 | }
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[29628] | 340 | else if (e.which == 2) {
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| 341 | // Middle => fix on this and do similarity with everything else
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| 342 | var fix_id = this.id;
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| 343 | e.preventDefault();
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| 344 | }
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| 345 |
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[29626] | 346 | };
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[29622] | 347 |
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[29626] | 348 |
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[29906] | 349 | imageObj.src = img_url;
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| 350 | imageObj.height = 216;
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| 351 | imageObj.title = title.toUpperCase();
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[29806] | 352 | imageObj.country = imageObj.title;
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[29906] | 353 | imageObj.id = "flag-img-" + i;
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[29626] | 354 |
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[29622] | 355 | $displayDiv.append(imageObj);
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| 356 | }
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| 357 | }
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| 358 |
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[29806] | 359 |
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| 360 |
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| 361 |
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[29906] | 362 | function calcSimilarityValuesChain(newFlagQuantHSLHist,
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| 363 | chain_count, img_obj_list, img_obj_list_len,
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| 364 | progressVal, progress_step,
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| 365 | $progressArea,$progressBar)
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| 366 | {
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| 367 | var imgObj = img_obj_list[chain_count];
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[29806] | 368 |
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[29906] | 369 | var existingQuantHSLHist = imgObj.quantHSLHist;
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| 370 |
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| 371 | var similarity_score = quantizedColourHistogramComparison(newFlagQuantHSLHist,existingQuantHSLHist);
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| 372 | similarity_score = Math.round(similarity_score * 100) / 100; // round to 2 decimal places
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| 373 | similarity_score *= 100; // express as percentage
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| 374 |
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| 375 | imgObj.similarityScore = similarity_score;
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| 376 | var img_title = imgObj.country;
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| 377 |
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| 378 | if (isoCountryCodes != null) {
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| 379 | var country_code = imgObj.country;
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| 380 | img_title = isoCountryCodes[country_code] + " (" + country_code + ")";
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| 381 | }
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| 382 | imgObj.title = img_title + ", Similarity score: " + similarity_score + "%";
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| 383 | if (similarity_score>50) {
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| 384 | //imgObj.style.display = "block";
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| 385 | //imgObj.style.visibility = "visible";
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| 386 | }
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| 387 | else {
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| 388 | //imgObj.style.display = "none";
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| 389 | //imgObj.style.visibility = "hidden";
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| 390 | }
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| 391 |
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| 392 |
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| 393 |
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| 394 | if (chain_count < img_obj_list_len-1) {
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| 395 | progressVal += progress_step;
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| 396 | if ($progressBar.progressbar) {
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| 397 | $progressBar.progressbar('value',progressVal);
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| 398 | }
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| 399 |
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| 400 | setTimeout(function()
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| 401 | { calcSimilarityValuesChain(newFlagQuantHSLHist,
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| 402 | chain_count+1,img_obj_list, img_obj_list_len,
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| 403 | progressVal, progress_step,
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| 404 | $progressArea,$progressBar)
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| 405 | }
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| 406 | ,1 // any time delay causes break in 'rendering' thread, even 0!
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| 407 | );
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| 408 |
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| 409 | }
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| 410 | else {
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| 411 | // done
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| 412 | $progressArea.find('span:first').text("Done.");
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| 413 | if (img_obj_list_len>show_progress) {
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| 414 | progressVal = 100;
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| 415 | if ($progressBar.progressbar) {
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| 416 | $progressBar.progressbar('value',progressVal);
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| 417 | }
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| 418 | $progressArea.slideUp();
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| 419 | }
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| 420 | }
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| 421 |
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| 422 | }
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| 423 |
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[29806] | 424 | function calcSimilarityValues(newFlagQuantHSLHist, $displayDiv,$progressArea,$progressBar)
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| 425 | {
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| 426 | console.log("*** calcSimilarityValues()");
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| 427 |
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| 428 | var iframe = $('#similarity-2d-iframe').contents();
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| 429 |
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| 430 | var img_obj_list = iframe.find('#flagArea').children('img').toArray();
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| 431 |
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| 432 | var img_obj_list_len = img_obj_list.length;
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[29906] | 433 | console.log("*** img obj list len = " + img_obj_list_len);
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[29806] | 434 |
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| 435 | if (img_obj_list_len==0) {
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| 436 | return;
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| 437 | }
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| 438 | else if (img_obj_list_len>show_progress) {
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| 439 | // number of images to process non-trivial
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| 440 | $progressArea.slideDown();
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| 441 | }
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| 442 |
|
---|
[29906] | 443 | for (var i=0; i<img_obj_list.length; i++) {
|
---|
| 444 | var imgObj = img_obj_list[i];
|
---|
| 445 | imgObj.style.display = "inline";
|
---|
| 446 | //imgObj.style.visibility = "visible";
|
---|
| 447 | }
|
---|
| 448 |
|
---|
[29806] | 449 | var progress_step = 100.0 / img_obj_list_len;
|
---|
[29906] | 450 | /*
|
---|
| 451 | var chain_count=0;
|
---|
| 452 |
|
---|
| 453 | setTimeout(function() {
|
---|
| 454 | calcSimilarityValuesChain(newFlagQuantHSLHist,
|
---|
| 455 | chain_count, img_obj_list, img_obj_list_len,
|
---|
| 456 | progressVal, progress_step,
|
---|
| 457 | $progressArea,$progressBar)
|
---|
| 458 | }
|
---|
| 459 | ,100
|
---|
| 460 | );
|
---|
| 461 | */
|
---|
| 462 |
|
---|
| 463 |
|
---|
[29806] | 464 | for (var i=0; i<img_obj_list.length; i++) {
|
---|
| 465 | var imgObj = img_obj_list[i];
|
---|
| 466 |
|
---|
| 467 | var existingQuantHSLHist = imgObj.quantHSLHist;
|
---|
| 468 |
|
---|
| 469 | var similarity_score = quantizedColourHistogramComparison(newFlagQuantHSLHist,existingQuantHSLHist);
|
---|
[29906] | 470 | similarity_score = Math.round(similarity_score * 100) / 100; // round to 2 decimal places
|
---|
| 471 | similarity_score *= 100; // express as percentage
|
---|
| 472 |
|
---|
[29806] | 473 | imgObj.similarityScore = similarity_score;
|
---|
[29906] | 474 | var img_title = imgObj.country;
|
---|
[29806] | 475 |
|
---|
[29906] | 476 | if (isoCountryCodes != null) {
|
---|
| 477 | var country_code = imgObj.country;
|
---|
| 478 | img_title = isoCountryCodes[country_code] + " (" + country_code + ")";
|
---|
| 479 | }
|
---|
| 480 | imgObj.title = img_title + ", Similarity score: " + similarity_score + "%";
|
---|
| 481 | if (similarity_score>50) {
|
---|
| 482 | //imgObj.style.display = "inline";
|
---|
| 483 | //imgObj.style.visibility = "visible";
|
---|
| 484 | }
|
---|
| 485 | else {
|
---|
| 486 | //imgObj.style.display = "none";
|
---|
| 487 | //imgObj.style.visibility = "hidden";
|
---|
| 488 | }
|
---|
| 489 |
|
---|
[29806] | 490 | progressVal += progress_step;
|
---|
[29906] | 491 | //console.log("*** i = " + i);
|
---|
| 492 | //console.log("*** pbar = " + $progressBar.progressbar);
|
---|
[29806] | 493 | if ($progressBar.progressbar) {
|
---|
| 494 | $progressBar.progressbar('value',progressVal);
|
---|
| 495 | }
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | //progressVal = 100;
|
---|
| 499 | //$progressBar.progressbar('value',progressVal);
|
---|
| 500 |
|
---|
| 501 | if (img_obj_list_len>show_progress) {
|
---|
| 502 | $progressArea.slideUp();
|
---|
| 503 | }
|
---|
[29906] | 504 |
|
---|
| 505 |
|
---|
[29806] | 506 | }
|
---|
| 507 |
|
---|
| 508 | function sortUsingAttribute(parent, childSelector, field) {
|
---|
| 509 | var items = parent.children(childSelector).sort(function(a, b) {
|
---|
| 510 | var vA = a.attr(field);
|
---|
| 511 | var vB = b.attr(field)
|
---|
| 512 | return (vA < vB) ? -1 : (vA > vB) ? 1 : 0;
|
---|
| 513 | });
|
---|
| 514 |
|
---|
| 515 | parent.empty(childSelecctor);
|
---|
| 516 | parent.append(items);
|
---|
| 517 | }
|
---|
| 518 |
|
---|
| 519 |
|
---|
| 520 | function compareSimilarityValue(a,b) {
|
---|
| 521 |
|
---|
| 522 | //var vA = a.similarityScore;
|
---|
| 523 | //var vB = b.similarityScore;
|
---|
| 524 | //return (vA < vB) ? -1 : (vA > vB) ? 1 : 0;
|
---|
| 525 |
|
---|
| 526 | return (b.similarityScore - a.similarityScore);
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | function sortFlagsBySimilarityValue($iframe)
|
---|
| 530 | {
|
---|
| 531 | var img_obj_list = $iframe.find('#flagArea > img').toArray();
|
---|
| 532 |
|
---|
| 533 | var sorted_img_obj_list = img_obj_list.sort(compareSimilarityValue);
|
---|
| 534 | //console.log("*** sorted img len = " + sorted_img_obj_list.length);
|
---|
| 535 |
|
---|
| 536 | $iframe.find('#flagArea').empty('img');
|
---|
| 537 |
|
---|
| 538 | $iframe.find('#flagArea').append(sorted_img_obj_list);
|
---|
| 539 |
|
---|
| 540 | //sortUsingAttribute('#flagArea','img','similarityValue');
|
---|
| 541 | }
|
---|
| 542 |
|
---|
| 543 |
|
---|
| 544 |
|
---|
[29626] | 545 | function computeFlagHistogramChain(chain_count, img_list_len,
|
---|
| 546 | progressVal, progress_step,
|
---|
| 547 | $progressArea,$progressBar)
|
---|
| 548 | {
|
---|
| 549 | var flag_id = "flag-img-" + chain_count;
|
---|
| 550 | console.log("Processing Image ID: " + flag_id);
|
---|
| 551 | var imageObj = document.getElementById(flag_id);
|
---|
[29622] | 552 |
|
---|
[29626] | 553 | if (!imageObj.quantHSLHist) {
|
---|
| 554 | // Only need to compute this if it is not
|
---|
| 555 | // already stored in the object/tag
|
---|
[29787] | 556 |
|
---|
| 557 | if (retrieveFromServer) {
|
---|
| 558 | // see if it is stored on the server
|
---|
[29806] | 559 | console.log("Retrieving stored colour histogram for " + imageObj.title.toLowerCase() + " ...");
|
---|
[29787] | 560 | $.ajax({
|
---|
| 561 | async: false,
|
---|
| 562 | dataType: "json",
|
---|
[29806] | 563 | url: "../similarity-2d/json-data/" + imageObj.title.toLowerCase() + ".json",
|
---|
[29787] | 564 | success: function(data) {
|
---|
| 565 | console.log("... success");
|
---|
| 566 | // 'data' is the array of integer vals we want
|
---|
| 567 | imageObj.quantHSLHist = data;
|
---|
| 568 | },
|
---|
| 569 | error: function() {
|
---|
| 570 | console.log("... not stored on server");
|
---|
| 571 | // not stored on the server (currently)
|
---|
| 572 | // => need to compute it
|
---|
| 573 | imageObj.quantHSLHist = createHSLHistogram(imageObj,16);
|
---|
| 574 | //console.log(imageObj.quantHSLHist);
|
---|
| 575 |
|
---|
| 576 | }
|
---|
| 577 | });
|
---|
| 578 | }
|
---|
| 579 | else {
|
---|
| 580 | imageObj.quantHSLHist = createHSLHistogram(imageObj,16);
|
---|
| 581 | }
|
---|
| 582 |
|
---|
[29626] | 583 | }
|
---|
[29622] | 584 |
|
---|
[29626] | 585 | if (chain_count < img_list_len-1) {
|
---|
| 586 | progressVal += progress_step;
|
---|
| 587 | $progressBar.progressbar('value',progressVal);
|
---|
| 588 |
|
---|
| 589 | setTimeout(function()
|
---|
| 590 | { computeFlagHistogramChain(chain_count+1,img_list_len,
|
---|
| 591 | progressVal, progress_step,
|
---|
| 592 | $progressArea,$progressBar)
|
---|
| 593 | }
|
---|
[29628] | 594 | ,mini_delay // any time delay causes break in 'rendering' thread, even 0!
|
---|
[29626] | 595 | );
|
---|
| 596 |
|
---|
| 597 | }
|
---|
| 598 | else {
|
---|
| 599 | $progressArea.find('span:first').text("Done.");
|
---|
| 600 | if (img_list_len>show_progress) {
|
---|
| 601 | progressVal = 100;
|
---|
| 602 | $progressBar.progressbar('value',progressVal);
|
---|
| 603 | $progressArea.slideUp();
|
---|
| 604 | }
|
---|
[29628] | 605 |
|
---|
| 606 | doneComputingHistograms(img_list_len);
|
---|
[29626] | 607 | }
|
---|
| 608 | }
|
---|
| 609 |
|
---|
[29628] | 610 |
|
---|
[29626] | 611 | function computeFlagHistograms(img_list,$progressArea,$progressBar)
|
---|
| 612 | {
|
---|
| 613 | var img_list_len = img_list.length;
|
---|
| 614 |
|
---|
| 615 |
|
---|
| 616 | if (img_list_len==0) {
|
---|
| 617 | $progressArea.find('span:first').text("Empty list: no computation needed.");
|
---|
| 618 | return;
|
---|
| 619 | }
|
---|
| 620 |
|
---|
[29628] | 621 |
|
---|
[29626] | 622 | $progressArea.find('span:first').text("Computing histograms:");
|
---|
| 623 | progressVal = 0;
|
---|
| 624 |
|
---|
| 625 | if (img_list_len>show_progress) {
|
---|
| 626 | $progressArea.slideDown();
|
---|
| 627 | }
|
---|
| 628 |
|
---|
| 629 | var progress_step = 100.0 / img_list_len;
|
---|
| 630 |
|
---|
| 631 | // Start the chaining process
|
---|
| 632 | setTimeout(function()
|
---|
| 633 | { computeFlagHistogramChain(0,img_list_len,
|
---|
| 634 | progressVal, progress_step,
|
---|
| 635 | $progressArea,$progressBar)
|
---|
| 636 | }
|
---|
[29628] | 637 | ,mini_delay // any time delay causes break in 'rendering' thread, even 0!
|
---|
[29626] | 638 | );
|
---|
| 639 |
|
---|
[29628] | 640 | }
|
---|
| 641 |
|
---|
| 642 | function doneComputingHistograms(img_list_len)
|
---|
| 643 | {
|
---|
[29787] | 644 | quantHSLHistogramArray = new Array(img_list_len);
|
---|
| 645 | for (var i=0; i<img_list_len; i++) {
|
---|
| 646 | var flag_id = "flag-img-" + i;
|
---|
| 647 | var imageObj = document.getElementById(flag_id);
|
---|
| 648 | quantHSLHistogramArray[i] = imageObj.quantHSLHist;
|
---|
| 649 | }
|
---|
| 650 | var json_hist_data = JSON.stringify(quantHSLHistogramArray);
|
---|
| 651 |
|
---|
[29628] | 652 | if (hasLocalStorage) {
|
---|
| 653 | // build up quantHSLHistogramArray from all the images
|
---|
| 654 |
|
---|
| 655 | console.log("Storing computed HSL histograms in localStorage");
|
---|
[29787] | 656 | localStorage.quantHSLHistogramArray = json_hist_data;
|
---|
[29628] | 657 | }
|
---|
[29787] | 658 |
|
---|
| 659 | if (saveOnServer) {
|
---|
| 660 | // run-length encode data, so less to send
|
---|
| 661 | var quantHSLHistogramArrayRLE = new Array(img_list_len);
|
---|
| 662 | for (var i=0; i<img_list_len; i++) {
|
---|
| 663 | //console.log("rle encoding ... i = " + i);
|
---|
| 664 | quantHSLHistogramArrayRLE[i] = runlength_encode(quantHSLHistogramArray[i])
|
---|
| 665 |
|
---|
| 666 | //var test_decode_array = runlength_decode(quantHSLHistogramArrayRLE[i]);
|
---|
| 667 | //console.log("Checking decoded array: " + arrays_identical(test_decode_array,quantHSLHistogramArray[i]));
|
---|
| 668 | }
|
---|
| 669 |
|
---|
| 670 |
|
---|
| 671 | var json_hist_data_rle = JSON.stringify(quantHSLHistogramArrayRLE);
|
---|
| 672 |
|
---|
| 673 | var json_filename = "all-hsv-histograms-rle.json";
|
---|
| 674 | var data = { jsonFilename: json_filename, jsonData: json_hist_data_rle};
|
---|
| 675 |
|
---|
| 676 | console.log("Saving colour histogram data for all flags");
|
---|
| 677 | $.ajax({
|
---|
| 678 | type: "POST",
|
---|
| 679 | url: "../similarity-2d/save-json-data.jsp",
|
---|
| 680 | data: data
|
---|
| 681 | });
|
---|
| 682 | }
|
---|
[29628] | 683 | }
|
---|
| 684 |
|
---|
| 685 | function doneDisplayFlags(img_list,$progressArea,$progressBar)
|
---|
| 686 | {
|
---|
[29787] | 687 | console.log("doneDisplayFlags()");
|
---|
[29628] | 688 |
|
---|
[29787] | 689 | var needToComputeHistograms = true;
|
---|
[29628] | 690 |
|
---|
[29787] | 691 | if (hasLocalStorage) {
|
---|
| 692 |
|
---|
[29628] | 693 | if (localStorage.quantHSLHistogramArray) {
|
---|
| 694 |
|
---|
[29787] | 695 | console.log("Retrieving quantized HSL histograms from local storage");
|
---|
[29628] | 696 |
|
---|
| 697 | var stored_hist_array = JSON.parse(localStorage["quantHSLHistogramArray"]);
|
---|
| 698 | if (stored_hist_array.length == img_list.length) {
|
---|
| 699 | // Assume if the number of images process hasn't changed, then neither
|
---|
| 700 | // has the stored historgram values
|
---|
| 701 |
|
---|
| 702 | quantHSLHistogramArray = stored_hist_array;
|
---|
| 703 |
|
---|
| 704 | var i;
|
---|
| 705 | for (i=0; i<img_list.length; i++) {
|
---|
| 706 | var flag_id = "flag-img-" + i;
|
---|
| 707 | var imageObj = document.getElementById(flag_id);
|
---|
| 708 | imageObj.quantHSLHist = quantHSLHistogramArray[i];
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 | needToComputeHistograms = false;
|
---|
| 712 | }
|
---|
[29757] | 713 | else {
|
---|
| 714 | console.log("Different number of images detected => regenerating");
|
---|
| 715 | }
|
---|
[29628] | 716 | }
|
---|
| 717 | }
|
---|
| 718 |
|
---|
[29787] | 719 | if (needToComputeHistograms) {
|
---|
[29628] | 720 |
|
---|
[29787] | 721 | if (retrieveFromServer) {
|
---|
| 722 | // before computing histograms from scratch, see if resulting data stored on server
|
---|
| 723 |
|
---|
| 724 | console.log("Retrieving stored colour histgram data for all flags ...");
|
---|
| 725 | $.ajax({
|
---|
| 726 | async: true,
|
---|
| 727 | dataType: "json",
|
---|
| 728 | url: "../similarity-2d/json-data/all-hsv-histograms-rle.json",
|
---|
| 729 | success: function(rle_data) {
|
---|
| 730 | console.log("... success");
|
---|
| 731 | if (rle_data.length != img_list.length) {
|
---|
[29806] | 732 | console.log("Stored histogram data out of date with flag list.");
|
---|
| 733 | console.log("rle len = " + rle_data.length + ", img_list len = " + img_list.length);
|
---|
[29787] | 734 | // what is stored on the sever differed to the number of images displayed
|
---|
| 735 | computeFlagHistograms(img_list,$progressArea,$progressBar);
|
---|
| 736 | }
|
---|
| 737 | else {
|
---|
| 738 | var img_list_len = img_list.length;
|
---|
| 739 | quantHSLHistogramArray = new Array(img_list_len);
|
---|
| 740 |
|
---|
| 741 | // Need to rle decode each entry in this array
|
---|
| 742 | for (var i=0; i<img_list_len; i++) {
|
---|
| 743 | quantHSLHistogramArray[i] = runlength_decode(rle_data[i]);
|
---|
| 744 | var flag_id = "flag-img-" + i;
|
---|
| 745 | var imageObj = document.getElementById(flag_id);
|
---|
| 746 | imageObj.quantHSLHist = quantHSLHistogramArray[i];
|
---|
| 747 |
|
---|
| 748 | }
|
---|
| 749 |
|
---|
| 750 | needToComputeHistograms = false;
|
---|
| 751 |
|
---|
| 752 | $progressArea.slideUp();
|
---|
| 753 | doneComputingHistograms(img_list.length);
|
---|
| 754 |
|
---|
| 755 | }
|
---|
| 756 | },
|
---|
| 757 | error: function() {
|
---|
| 758 | console.log("... not stored on server");
|
---|
| 759 | computeFlagHistograms(img_list,$progressArea,$progressBar);
|
---|
| 760 | }
|
---|
| 761 | });
|
---|
| 762 |
|
---|
| 763 |
|
---|
| 764 | }
|
---|
| 765 | else {
|
---|
| 766 | computeFlagHistograms(img_list,$progressArea,$progressBar);
|
---|
| 767 | }
|
---|
[29628] | 768 | }
|
---|
| 769 | else {
|
---|
| 770 | $progressArea.slideUp();
|
---|
| 771 | doneComputingHistograms(img_list.length);
|
---|
| 772 | }
|
---|
[29757] | 773 | }
|
---|
[29628] | 774 |
|
---|
[29757] | 775 | function rankBySimilarity(imageData,x_dim,y_dim)
|
---|
| 776 | {
|
---|
| 777 | // quantizedColourHistogramComparison(quant_colour_hist1,quant_colour_hist2)
|
---|
[29628] | 778 |
|
---|
[29757] | 779 | }
|
---|