PROJ_SPHERICAL_EQRECT 2633 modules/imgproc/include/opencv2/imgproc.hpp                                          int projType = PROJ_SPHERICAL_EQRECT, double alpha = 0);
PROJ_SPHERICAL_EQRECT  437 modules/imgproc/src/undistort.cpp     if( projType == PROJ_SPHERICAL_EQRECT )