move functions from proof of concept into apply image

fourcell/apply_image.py

@@ -38,6 +38,18 @@ def create_blank(width, height):
 def to_points (d) :
 	return [[d['0']['x'], d['0']['y']], [d['1']['x'], d['1']['y']], [d['3']['x'], d['3']['y']]]
 
+def get_mask (img) :
+	lower = np.array([0,0,0,0])
+	upper= np.array([0,0,0,0])
+	mask = cv2.inRange(img, lower, upper)
+	return cv2.bitwise_not(mask)
+
+def combine_images (bg, fg, mask) :
+	fk = cv2.bitwise_or(fg, fg, mask=mask)
+	mask = cv2.bitwise_not(mask)
+	bk = cv2.bitwise_or(bg, bg, mask=mask)
+	return cv2.bitwise_or(fk, bk)
+
 if len(sys.argv) < 2 :
 	print('Please provide an output destination file')
 	exit(1)