value error

[Shubham191297]

File "C:\Users\Shubham.000\Desktop\OpenCV_3_License_Plate_Recognition_Python-master\DetectPlates.py", line 133, in findPossibleCharsInScene
imgContours, contours, npaHierarchy = cv2.findContours(imgThreshCopy, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE) # find all contours

ValueError: need more than 2 values to unpack

[pristis]

Same issue here.

python Main.py Traceback (most recent call last): File "Main.py", line 134, in <module> main() File "Main.py", line 38, in main listOfPossiblePlates = DetectPlates.detectPlatesInScene(imgOriginalScene) # detect plates File "/home/martin/Documents/Plate/OpenCV_3_License_Plate_Recognition_Python-master/DetectPlates.py", line 43, in detectPlatesInScene listOfPossibleCharsInScene = findPossibleCharsInScene(imgThreshScene) File "/home/martin/Documents/Plate/OpenCV_3_License_Plate_Recognition_Python-master/DetectPlates.py", line 133, in findPossibleCharsInScene imgContours, contours, npaHierarchy = cv2.findContours(imgThreshCopy, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE) # find all contours ValueError: need more than 2 values to unpack

[techieph]

the function cv2.findContours() has been changed to return only the two parameters, here in this context contours, npaHierarchy
you should change it to:
contours, npaHierarchy = cv2.findContours(imgThreshCopy, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE) # find all contours in Line:133 in DetectPlates.py,
contours, npaHierarchy = cv2.findContours(imgThreshCopy, cv2.RETR_CCOMP, cv2.CHAIN_APPROX_SIMPLE) in Line:239 in DetectPlates.py.
Ping me back if it works!

[Mayank2504]

@techieph yes it worked

[iNusz]

@techieph it works well!!

but in 7 line you should change word
DetectPlates.py -> DetectChars.py