Added try-except to account for diff opencv versions

Author: theAIGuysCode

core/utils.py

@@ -36,7 +36,10 @@ def recognize_plate(img, coords):
     #cv2.imshow("Dilation", dilation)
     #cv2.waitKey(0)
     # find contours of regions of interest within license plate
-    contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
+    try:
+        contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
+    except:
+        ret_img, contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
     # sort contours left-to-right
     sorted_contours = sorted(contours, key=lambda ctr: cv2.boundingRect(ctr)[0])
     # create copy of gray image

license_plate_recognizer.py

@@ -24,7 +24,10 @@
 #cv2.imshow("dilation", dilation)
 #cv2.waitKey(0)
 # find contours
-contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
+try:
+    contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
+except:
+    ret_img, contours, hierarchy = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
 sorted_contours = sorted(contours, key=lambda ctr: cv2.boundingRect(ctr)[0])
 
 # create copy of image