third_party/opencv
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix in Canny when Sobel apertureSize is 7 (#10743)

Browse Source 
* Fixing a bug in Canny implemetation when Sobel aperture size is 7.

* Fixing the bug in Canny accross variants and in test_canny.cpp

* Replacing a tab with white space
This commit is contained in:
Harshal Nishar
2018-02-02 19:30:11 +05:30
committed by Vadim Pisarevsky
parent 83761d5f8e
commit 384fa95680
2 changed files with 32 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modules/imgproc/test/test_canny.cpp
+5 -5
View File
@@ -211,15 +211,15 @@ test_Canny( const Mat& src, Mat& dst,
Mat dxkernel = cvtest::calcSobelKernel2D( 1, 0, m, 0 );
Mat dykernel = cvtest::calcSobelKernel2D( 0, 1, m, 0 );
Mat dx, dy, mag(height, width, CV_32F);
cvtest::filter2D(src, dx, CV_16S, dxkernel, anchor, 0, BORDER_REPLICATE);
cvtest::filter2D(src, dy, CV_16S, dykernel, anchor, 0, BORDER_REPLICATE);
cvtest::filter2D(src, dx, CV_32S, dxkernel, anchor, 0, BORDER_REPLICATE);
cvtest::filter2D(src, dy, CV_32S, dykernel, anchor, 0, BORDER_REPLICATE);
// calc gradient magnitude
for( y = 0; y < height; y++ )
{
for( x = 0; x < width; x++ )
{
int dxval = dx.at<short>(y, x), dyval = dy.at<short>(y, x);
int dxval = dx.at<int>(y, x), dyval = dy.at<int>(y, x);
mag.at<float>(y, x) = use_true_gradient ?
(float)sqrt((double)(dxval*dxval + dyval*dyval)) :
(float)(fabs((double)dxval) + fabs((double)dyval));
@@ -238,8 +238,8 @@ test_Canny( const Mat& src, Mat& dst,
if( a <= lowThreshold )
continue;
int dxval = dx.at<short>(y, x);
int dyval = dy.at<short>(y, x);
int dxval = dx.at<int>(y, x);
int dyval = dy.at<int>(y, x);
double tg = dxval ? (double)dyval/dxval : DBL_MAX*CV_SIGN(dyval);