Compilation error

[swvanderlaan]

A compilation error due to updated opencv4 compared to opencv2.

slideNormalize.cpp:40:40: error: use of undeclared identifier 'CV_BGR2Lab'
   40 |     cv::cvtColor(bgr_image, lab_image, CV_BGR2Lab);
      |                                        ^
slideNormalize.cpp:66:41: error: use of undeclared identifier 'CV_Lab2BGR'
   66 |    cv::cvtColor(lab_image, image_clahe, CV_Lab2BGR);
      |                                         ^
slideNormalize.cpp:73:42: error: use of undeclared identifier 'CV_WINDOW_NORMAL'; did you mean 'cv::WINDOW_NORMAL'?
   73 |        cv::namedWindow("Original image", CV_WINDOW_NORMAL);
      |                                          ^~~~~~~~~~~~~~~~
      |                                          cv::WINDOW_NORMAL
/usr/local/opt/opencv/include/opencv4/opencv2/highgui.hpp:143:8: note: 'cv::WINDOW_NORMAL' declared here
  143 |        WINDOW_NORMAL     = 0x00000000, //!< the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size.
      |        ^
slideNormalize.cpp:77:52: error: use of undeclared identifier 'CV_WINDOW_NORMAL'; did you mean 'cv::WINDOW_NORMAL'?
   77 |        cv::namedWindow("Normalized (CLAHE) image", CV_WINDOW_NORMAL);
      |                                                    ^~~~~~~~~~~~~~~~
      |                                                    cv::WINDOW_NORMAL
/usr/local/opt/opencv/include/opencv4/opencv2/highgui.hpp:143:8: note: 'cv::WINDOW_NORMAL' declared here
  143 |        WINDOW_NORMAL     = 0x00000000, //!< the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size.
      |        ^
4 errors generated.
slideNormalize.cpp:40:40: error: use of undeclared identifier 'CV_BGR2Lab'
   40 |     cv::cvtColor(bgr_image, lab_image, CV_BGR2Lab);
      |                                        ^
slideNormalize.cpp:66:41: error: use of undeclared identifier 'CV_Lab2BGR'
   66 |    cv::cvtColor(lab_image, image_clahe, CV_Lab2BGR);
      |                                         ^
slideNormalize.cpp:73:42: error: use of undeclared identifier 'CV_WINDOW_NORMAL'; did you mean 'cv::WINDOW_NORMAL'?
   73 |        cv::namedWindow("Original image", CV_WINDOW_NORMAL);
      |                                          ^~~~~~~~~~~~~~~~
      |                                          cv::WINDOW_NORMAL
/usr/local/opt/opencv/include/opencv4/opencv2/highgui.hpp:143:8: note: 'cv::WINDOW_NORMAL' declared here
  143 |        WINDOW_NORMAL     = 0x00000000, //!< the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size.
      |        ^
slideNormalize.cpp:77:52: error: use of undeclared identifier 'CV_WINDOW_NORMAL'; did you mean 'cv::WINDOW_NORMAL'?
   77 |        cv::namedWindow("Normalized (CLAHE) image", CV_WINDOW_NORMAL);
      |                                                    ^~~~~~~~~~~~~~~~
      |                                                    cv::WINDOW_NORMAL
/usr/local/opt/opencv/include/opencv4/opencv2/highgui.hpp:143:8: note: 'cv::WINDOW_NORMAL' declared here
  143 |        WINDOW_NORMAL     = 0x00000000, //!< the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size.
      |        ^
4 errors generated.