FindContours support only 8uC1 and 32sC1 images

Question

i hava problem in fire detection my code is :

ret, frame = cap.read()
lab_image = cv2.cvtColor(frame, cv2.COLOR_BGR2LAB)
L , a , b = cv2.split(lab_image)
ret,t         


        

Answer 1

In my solution I had to convert the dtype into uint8.

Yes, my image was binary image(single channel), however in my code somehow the thresh_image was changed into float32 data type. But cv2.findContours() cannot handle float32.

So I had to explicitly convert float32 --> uint8.

thresh_image = thresh_image.astype(np.uint8)