fixed http://code.opencv.org/issues/3828, added test. thanks to berak for the patch

2015-04-29 13:12:53 +03:00
parent 0746ec7035
commit d8f360316d
2 changed files with 15 additions and 0 deletions
--- a/modules/core/src/stat.cpp
+++ b/modules/core/src/stat.cpp
@@ -3826,6 +3826,11 @@ void cv::findNonZero( InputArray _src, OutputArray _idx )
    Mat src = _src.getMat();
    CV_Assert( src.type() == CV_8UC1 );
    int n = countNonZero(src);
+    if( n == 0 )
+    {
+        _idx.release();
+        return;
+    }
    if( _idx.kind() == _InputArray::MAT && !_idx.getMatRef().isContinuous() )
        _idx.release();
    _idx.create(n, 1, CV_32SC2);