CBIRColor Code

--- a
+++ b/histogram.py
@@ -0,0 +1,43 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import math
+from PIL import Image
+
+NUMBEROFIMAGES = 700
+NUMBEROFBINS = 256
+SCALE = 256*256*256
+
+def getbin(r,g,b):
+	color = r*2**16+g*2**8+b
+	factor = SCALE/NUMBEROFBINS
+	return color/factor
+
+fout = open('histogram.txt','w')
+fout.write(str(NUMBEROFIMAGES)+'\n')
+fout.write(str(NUMBEROFBINS)+'\n')
+
+print 'starting...'
+
+for m in range(1,NUMBEROFIMAGES+1):
+    print 'generating HISTOGRAM for',str(m)+'.jpg'
+    fout.write(str(m)+'.jpg\n')        
+    
+    im = Image.open(str(m)+'.jpg')
+
+    freq = [0 for i in range(NUMBEROFBINS)]
+    
+    pixels = list(im.getdata())
+    width, height = im.size
+
+    for i in pixels:
+		r,g,b = i
+		ind = getbin(r,g,b)
+		freq[ind] = freq[ind]+1
+    
+    for i in range(NUMBEROFBINS):
+        fout.write(str(freq[i]/(width*height*1.0)))
+        fout.write('\n')
+
+fout.close()
+print 'Done!'