source: other-projects/nz-flag-design/trunk/similarity-2d/index.jsp@ 29533

Last change on this file since 29533 was 29533, checked in by davidb, 9 years ago

Some simple JSP operations to perform over the Images folder
File size: 4.1 KB
Line 
1<html>
2 <head>
3 </head>
4 <%@ page import="java.io.*,java.util.*,java.awt.image.*,javax.imageio.*" %>
5
6 <%!
7 public int GCD(int a, int b) {
8 if (b==0) return a;
9 return GCD(b,a%b);
10 }
11
12 ArrayList<File> listFilesForFolder(final File folder, String matchExt) {
13 ArrayList<File> fileList = new ArrayList<File>();
14
15 for (final File fileEntry : folder.listFiles()) {
16 if (fileEntry.isDirectory()) {
17 listFilesForFolder(fileEntry,matchExt);
18 } else {
19 if (fileEntry.getName().toLowerCase().endsWith(matchExt)) {
20 fileList.add(fileEntry);
21 }
22 }
23 }
24
25 return fileList;
26 }
27
28
29
30 public static Map<String, Integer> sortByComparator(Map<String, Integer> unsortMap)
31 {
32
33 // Convert Map to List
34 List<Map.Entry<String, Integer>> list
35 = new LinkedList<Map.Entry<String, Integer>>(unsortMap.entrySet());
36
37 // Sort list with comparator, to compare the Map values
38 Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
39 public int compare(Map.Entry<String, Integer> o1,
40 Map.Entry<String, Integer> o2) {
41 return (o2.getValue()).compareTo(o1.getValue());
42 }
43 });
44
45 // Convert sorted map back to a Map
46 Map<String, Integer> sortedMap = new LinkedHashMap<String, Integer>();
47 for (Iterator<Map.Entry<String, Integer>> it = list.iterator(); it.hasNext();) {
48 Map.Entry<String, Integer> entry = it.next();
49 sortedMap.put(entry.getKey(), entry.getValue());
50 }
51
52 return sortedMap;
53 }
54/*
55 public static void printMap(Map<String, Integer> map)
56 {
57 for (Map.Entry<String, Integer> entry : map.entrySet()) {
58 out.println("[Key] : " + entry.getKey()
59 + " [Value] : " + entry.getValue() + "br />");
60 }
61 }
62 */
63
64
65 %>
66
67 <%
68
69 String docBase = getServletContext().getRealPath("/");
70 File similarityDir = new File(docBase,"similarity-2d");
71 File imagesDir = new File(similarityDir,"Images");
72
73 ArrayList<File> imageFileList = listFilesForFolder(imagesDir,".gif");
74
75 File imageUrlBase = new File("Images");
76
77 String action = request.getParameter("action");
78
79 if (action.equals("ratios")) {
80
81 Map<String, Integer> ratioFreq = new HashMap<String, Integer>();
82 Map<String, ArrayList<File>> ratioList = new HashMap<String, ArrayList<File>>();
83
84 for (final File fileEntry : imageFileList) {
85
86 //out.println("flag " + fileEntry.getName());
87
88 BufferedImage bimg = ImageIO.read(fileEntry);
89 int width = bimg.getWidth();
90 int height = bimg.getHeight();
91 int gcd = GCD(width,height);
92
93 int gcd_width = width / gcd;
94 int gcd_height = height / gcd;
95 String ratioStr = gcd_width + ":" + gcd_height;
96
97 if (!ratioFreq.containsKey(ratioStr)) {
98 ratioFreq.put(ratioStr,1);
99 ratioList.put(ratioStr,new ArrayList<File>());
100 }
101 else {
102 ratioFreq.put(ratioStr,ratioFreq.get(ratioStr)+1);
103 ratioList.get(ratioStr).add(fileEntry);
104 }
105
106 //double ratio = (double)width/(double)height;
107
108 //out.println(width + " x " + height + " ratio: " + ratioStr);
109 //out.println("<br/>");
110
111
112 }
113
114 Map<String, Integer> sortedRatioFreq = sortByComparator(ratioFreq);
115 //printMap(sortedRatioFreq);
116 for (Map.Entry<String, Integer> entry : sortedRatioFreq.entrySet()) {
117 out.println("[Key] : " + entry.getKey()
118 + " [Value] : " + entry.getValue() + "<br />");
119 }
120
121/*
122 // Print out frequency counts
123 Iterator<String> keyIterator = ratioFreq.keySet().iterator();
124
125 while (keyIterator.hasNext()){
126 String key = keyIterator.next();
127 Integer freq = ratioFreq.get(key);
128 out.println(key + ": " + freq + "<br />");
129 }
130*/
131
132 }
133 else {
134
135 for (final File fileEntry : imageFileList) {
136 File flagImageUrl = new File(imageUrlBase,fileEntry.getName());
137
138 out.println("<img src=\"" + flagImageUrl.getPath() + "\">");
139
140 }
141 }
142
143
144 %>
145
146 <body>
147 </body>
148
149</html>
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