fixed cascade detection on images of size equal to feature size (#1070)

modules/objdetect/src/cascadedetect.cpp

@@ -649,8 +649,8 @@ bool HaarEvaluator::setImage( const Mat &image, Size _origWinSize )
 bool  HaarEvaluator::setWindow( Point pt )
 {
     if( pt.x < 0 || pt.y < 0 ||
-        pt.x + origWinSize.width >= sum.cols-2 ||
-        pt.y + origWinSize.height >= sum.rows-2 )
+        pt.x + origWinSize.width >= sum.cols ||
+        pt.y + origWinSize.height >= sum.rows )
         return false;
 
     size_t pOffset = pt.y * (sum.step/sizeof(int)) + pt.x;
@@ -812,8 +812,8 @@ bool LBPEvaluator::setImage( const Mat& image, Size _origWinSize )
 bool LBPEvaluator::setWindow( Point pt )
 {
     if( pt.x < 0 || pt.y < 0 ||
-        pt.x + origWinSize.width >= sum.cols-2 ||
-        pt.y + origWinSize.height >= sum.rows-2 )
+        pt.x + origWinSize.width >= sum.cols ||
+        pt.y + origWinSize.height >= sum.rows )
         return false;
     offset = pt.y * ((int)sum.step/sizeof(int)) + pt.x;
     return true;
@@ -1203,7 +1203,7 @@ void CascadeClassifier::detectMultiScale( const Mat& image, vector<Rect>& object
 
         Size windowSize( cvRound(originalWindowSize.width*factor), cvRound(originalWindowSize.height*factor) );
         Size scaledImageSize( cvRound( grayImage.cols/factor ), cvRound( grayImage.rows/factor ) );
-        Size processingRectSize( scaledImageSize.width - originalWindowSize.width, scaledImageSize.height - originalWindowSize.height );
+        Size processingRectSize( scaledImageSize.width - originalWindowSize.width + 1, scaledImageSize.height - originalWindowSize.height + 1 );
         
         if( processingRectSize.width <= 0 || processingRectSize.height <= 0 )
             break;

modules/objdetect/src/haar.cpp

@@ -673,8 +673,8 @@ cvRunHaarClassifierCascadeSum( const CvHaarClassifierCascade* _cascade,
             "Use cvSetImagesForHaarClassifierCascade" );
 
     if( pt.x < 0 || pt.y < 0 ||
-        pt.x + _cascade->real_window_size.width >= cascade->sum.width-2 ||
-        pt.y + _cascade->real_window_size.height >= cascade->sum.height-2 )
+        pt.x + _cascade->real_window_size.width >= cascade->sum.width ||
+        pt.y + _cascade->real_window_size.height >= cascade->sum.height )
         return -1;
 
     p_offset = pt.y * (cascade->sum.step/sizeof(sumtype)) + pt.x;
@@ -1095,7 +1095,7 @@ cvHaarDetectObjectsForROC( const CvArr* _img,
             CvSize winSize = { cvRound(winSize0.width*factor),
                                 cvRound(winSize0.height*factor) };
             CvSize sz = { cvRound( img->cols/factor ), cvRound( img->rows/factor ) };
-            CvSize sz1 = { sz.width - winSize0.width, sz.height - winSize0.height };
+            CvSize sz1 = { sz.width - winSize0.width + 1, sz.height - winSize0.height + 1 };
 
             CvRect equRect = { icv_object_win_border, icv_object_win_border,
                 winSize0.width - icv_object_win_border*2,