fix 'get_avg_color' and implement score function

classify.py

@@ -4,6 +4,10 @@ import h5py as h5
 
 db = None
 
+def init_train():
+    ''' Default init based on the train set `train.h5` '''
+    init('train.h5')
+
 def init(path):
     ''' initializes the database, must be called before any use '''
     global db
@@ -51,18 +55,41 @@ def get_avg_color(img, mask):
     gets avg color from an image that is underneath a mask,
     img and mask needs to be of same size(in x,y) but img can
     have any third dimension size it want(usually 3 for rgb or 1 for grayscale)
+
+    mask needs to be of shape(img.width, img.height, 1)
     '''
     sx, sy, sw = img.shape
     mx, my = mask.shape
     if sx != mx or sy != my:
-        print('Image and mask shape doesnt match!')
+        print('Image and mask size doesnt match!')
         return None
-    avg = np.array(sw, dtype=np.float32)
+    avg = np.zeros(sw, dtype=np.float32)
     count = 0.0
     for x in range(sx):
         for y in range(sy):
-            m = mas[x, y]
+            m = mask[x, y]
             avg += img[x, y] * m
             count += m
     avg /= count
     return avg
+
+def calc_score(img, mask, avg_color):
+    '''
+    Calculates the score for each mask with each color
+    '''
+    sx, sy, sw = img.shape
+    mx, my = mask.shape
+    if sx != mx or sy != my:
+        print('Image and mask size doesnt match!')
+        return 0.0
+    if sw != avg_color.shape[0]:
+        print('Image width doesnt match color width!')
+        return 0.0
+    score = 0.0
+    for x in range(sx):
+        for y in range(sy):
+            m = 0.5 - mask[x, y]
+            diff = img[x, y] - avg_color
+            mag = np.sqrt(diff.dot(diff)) # calculate magnitude
+            score += mag * m
+    return score