rewrote matchTemplate in C++; added border awareness to crossCorr (ticket #557)

modules/imgproc/src/filter.cpp

@@ -2994,15 +2994,18 @@ void filter2D( const Mat& src, Mat& dst, int ddepth,
     dst.create( src.size(), CV_MAKETYPE(ddepth, src.channels()) );
     anchor = normalizeAnchor(anchor, kernel.size());
 
-    if( kernel.cols*kernel.rows >= dft_filter_size /*&&
-        kernel.cols <= src.cols && kernel.rows <= src.rows*/ )
+    if( kernel.cols*kernel.rows >= dft_filter_size )
     {
         Mat temp;
         if( src.data != dst.data )
-            temp = src;
+            temp = dst;
         else
-            src.copyTo(temp);
-        crossCorr( temp, kernel, dst, anchor, delta, borderType );
+            temp.create(dst.size(), dst.type());
+        crossCorr( src, kernel, temp, src.size(),
+                   CV_MAKETYPE(ddepth, src.channels()),
+                   anchor, delta, borderType );
+        if( temp.data != dst.data )
+            temp.copyTo(dst);
         return;
     }
 

modules/imgproc/src/precomp.hpp

@@ -92,6 +92,7 @@ static inline Point normalizeAnchor( Point anchor, Size ksize )
 
 void preprocess2DKernel( const Mat& kernel, vector<Point>& coords, vector<uchar>& coeffs );
 void crossCorr( const Mat& src, const Mat& templ, Mat& dst,
+                Size corrsize, int ctype,
                 Point anchor=Point(0,0), double delta=0,
                 int borderType=BORDER_REFLECT_101 );
 
@@ -124,11 +125,6 @@ void icvSepConvSmall3_32f( float* src, int src_step, float* dst, int dst_step,
 #undef   CV_CALC_MAX
 #define  CV_CALC_MAX(a, b) if((a) < (b)) (a) = (b)
 
-void
-icvCrossCorr( const CvArr* _img, const CvArr* _templ,
-              CvArr* _corr, CvPoint anchor=cvPoint(0,0),
-              double delta=0, int borderType=IPL_BORDER_REPLICATE);
-
 CvStatus CV_STDCALL
 icvCopyReplicateBorder_8u( const uchar* src, int srcstep, CvSize srcroi,
                            uchar* dst, int dststep, CvSize dstroi,

modules/imgproc/src/utils.cpp

@@ -442,6 +442,7 @@ cvCopyMakeBorder( const CvArr* srcarr, CvArr* dstarr, CvPoint offset,
     if( dststep == 0 )
         dststep = CV_STUB_STEP;
 
+    bordertype &= 15;
     if( bordertype == IPL_BORDER_REPLICATE )
     {
         icvCopyReplicateBorder_8u( src->data.ptr, srcstep, srcsize,

samples/c/image.cpp

@@ -4,6 +4,8 @@
 
 using namespace cv; // all the new API is put into "cv" namespace. Export its content
 
+#if 0
+
 // enable/disable use of mixed API in the code below.
 #define DEMO_MIXED_API_USE 1
 
@@ -108,3 +110,30 @@ int main( int argc, char** argv )
     // all the memory will automatically be released by Vector<>, Mat and Ptr<> destructors.
 }
 
+#else
+
+int main(int argc, char *argv[])
+{
+	Mat im(160, 160, CV_32F);
+    randu(im, Scalar(0.0), Scalar(1.0));
+    Mat dd = Mat::zeros(17,1,CV_32F);
+    Mat lp = Mat::zeros(17,1,CV_32F);
+    dd.at<float>(0) = 0.5;
+    dd.at<float>(16) = -0.5;
+    lp.at<float>(0) = 0.5;
+    lp.at<float>(16) = 0.5;
+    int p = 16;
+    Mat H = dd*lp.t();
+    Mat imcrop(im, Rect(17, 17, im.cols-2*p, im.rows-2*p));
+    Mat out1, out2;
+    filter2D(imcrop, out1, CV_32F, H, Point(-1,-1));
+    sepFilter2D(imcrop, out2, CV_32F, lp, dd, Point(-1,-1));
+    Mat temp;
+    out1.convertTo(temp, CV_16U, 65535.0, 32768.0);
+    imshow("filtered1.png", temp);
+    out2.convertTo(temp, CV_16U, 65535.0, 32768.0);
+    imshow("filtered2.png", temp);
+    waitKey();
+}
+
+#endif