added first version of gpu::matchTemplate, currently it works only with 8UC1 images and SQDIFF method

modules/gpu/src/match_template.cpp

@@ -0,0 +1,69 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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+//     this list of conditions and the following disclaimer.
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+// In no event shall the Intel Corporation or contributors be liable for any direct,
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+// (including, but not limited to, procurement of substitute goods or services;
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+//M*/
+
+#include "precomp.hpp"
+
+#if !defined (HAVE_CUDA)
+
+void cv::gpu::matchTemplate(const GpuMat&, const GpuMat&, GpuMat&, int) { throw_nogpu(); }
+
+#else
+
+namespace cv { namespace gpu { namespace imgproc {
+    
+    void matchTemplateCaller_8U_SqDiff(const DevMem2D, const DevMem2D, DevMem2Df);
+
+}}}
+
+void cv::gpu::matchTemplate(const GpuMat& image, const GpuMat& templ, GpuMat& result, int method)
+{
+    CV_Assert(image.type() == CV_8U);
+    CV_Assert(method == CV_TM_SQDIFF);
+
+    CV_Assert(image.type() == templ.type());
+    CV_Assert(image.cols >= templ.cols && image.rows >= templ.rows);
+
+    result.create(image.rows - templ.rows + 1, image.cols - templ.cols + 1, CV_32F);
+    imgproc::matchTemplateCaller_8U_SqDiff(image, templ, result);
+}
+
+#endif