Traceback (most recent call last):
File "main.py", line 35, in <module>
digits = histogram_of_pixel_projection(img)
File "/Users/Projects/ml/ANPR/Licence_plate_recognition/tools.py", line 74, in histogram_of_pixel_projection
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2.error: OpenCV(4.1.0) /Users/travis/build/skvark/opencv-python/opencv/modules/imgproc/src/color.simd_helpers.hpp:92: error: (-2:Unspecified error) in function 'cv::impl::(anonymous namespace)::CvtHelper<cv::impl::(anonymous namespace)::Set<3, 4, -1>, cv::impl::(anonymous namespace)::Set<1, -1, -1>, cv::impl::(anonymous namespace)::Set<0, 2, 5>, cv::impl::(anonymous namespace)::SizePolicy::NONE>::CvtHelper(InputArray, OutputArray, int) [VScn = cv::impl::(anonymous namespace)::Set<3, 4, -1>, VDcn = cv::impl::(anonymous namespace)::Set<1, -1, -1>, VDepth = cv::impl::(anonymous namespace)::Set<0, 2, 5>, sizePolicy = cv::impl::(anonymous namespace)::SizePolicy::NONE]'
> Invalid number of channels in input image:
> 'VScn::contains(scn)'
> where
> 'scn' is 1
Any thoughts ? thank you in advance.
/Y