error: ‘HAAR_DO_CANNY_PRUNING’ is not a member of ‘cv’

I am upgrading an existing code base that use OpenCV 2 and 3 to be compatible with my Ubuntu 20.04 that uses OpenCV 4. One error I encountered when compiling is:

error: ‘HAAR_DO_CANNY_PRUNING’ is not a member of ‘cv’; did you mean ‘CASCADE_DO_CANNY_PRUNING’?

Should I accept the change proposed by the compiler and change cv::HAAR_DO_CANNY_PRUNING to cv::CASCADE_DO_CANNY_PRUNING for all occurrences?

Solution 1:

Should I accept the change proposed by the compiler?

Yes.

The values of the 4 CASCADE_* symbols match the ones of the old HAAR_* symbols, as @DanMasek commented.

You can check the enums in Enumeration Type Documentation and OpenCV-2_2 Reference, page 795.