Merge pull request #8388 from ottogin:calib3d

8 years ago · a83a1cafa7
parent b6e8de23f8 3bf5d34544
commit a83a1cafa7
1 changed files with 1 additions and 1 deletions
--- a/modules/calib3d/src/calibinit.cpp
+++ b/modules/calib3d/src/calibinit.cpp
@ -442,7 +442,7 @@ int cvFindChessboardCorners( const void* arr, CvSize pattern_size,

    Mat img = cvarrToMat((CvMat*)arr).clone();

-    if( img.depth() != CV_8U || (img.channels() != 1 && img.channels() != 3) )
+    if( img.depth() != CV_8U || (img.channels() != 1 && img.channels() != 3 && img.channels() != 4) )
       CV_Error( CV_StsUnsupportedFormat, "Only 8-bit grayscale or color images are supported" );

    if( pattern_size.width <= 2 || pattern_size.height <= 2 )