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

tests/gpu/src/gputest_main.cpp

@@ -56,7 +56,10 @@ const char* blacklist[] =
 int main( int argc, char** argv )
 
 {
-    return test_system.run( argc, argv, blacklist );
+    argc = 3;
+    const char* manargs[] = { "gputest", "-tn", "GPU-MatchTemplateTest"};
+    
+    return test_system.run( argc, (char**)manargs, blacklist );
 }
 
 /* End of file. */

tests/gpu/src/match_template.cpp

@@ -0,0 +1,145 @@
+/*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.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other GpuMaterials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or bpied warranties, including, but not limited to, the bpied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "gputest.hpp"
+
+using namespace cv;
+using namespace std;
+
+struct CV_GpuMatchTemplateTest: CvTest 
+{
+    CV_GpuMatchTemplateTest(): CvTest("GPU-MatchTemplateTest", "matchTemplate") {}
+
+    void run(int)
+    {
+        try
+        {
+            Mat image, templ;
+            Mat dst_gold;
+            gpu::GpuMat dst;
+            int n, m, h, w;
+
+            for (int i = 0; i < 4; ++i)
+            {
+                n = 1 + rand() % 100;
+                m = 1 + rand() % 100;
+                do h = 1 + rand() % 20; while (h > n);
+                do w = 1 + rand() % 20; while (w > m);
+                gen(image, n, m, CV_8U);
+                gen(templ, h, w, CV_8U);
+
+                match_template_naive(image, templ, dst_gold);
+                gpu::matchTemplate(gpu::GpuMat(image), gpu::GpuMat(templ), dst, CV_TM_SQDIFF);
+                if (!check8U(dst_gold, Mat(dst))) return;
+            }
+        }
+        catch (const Exception& e)
+        {
+            if (!check_and_treat_gpu_exception(e, ts)) throw;
+            return;
+        }
+    }
+
+
+    void gen(Mat& a, int rows, int cols, int type)
+    {
+        RNG rng;
+        a.create(rows, cols, type);
+        if (type == CV_8U)
+            rng.fill(a, RNG::UNIFORM, Scalar(0), Scalar(10));
+    }
+
+    // Naive version for unsigned char
+    // Time complexity is O(a.size().area() * b.size().area()).
+    void match_template_naive(const Mat& a, const Mat& b, Mat& c)
+    {
+        c.create(a.rows - b.rows + 1, a.cols - b.cols + 1, CV_32F);         
+        for (int i = 0; i < c.rows; ++i)
+        {
+            for (int j = 0; j < c.cols; ++j)
+            {
+                float delta;
+                float sum = 0.f;
+                for (int y = 0; y < b.rows; ++y)
+                {
+                    const unsigned char* arow = a.ptr(i + y);
+                    const unsigned char* brow = b.ptr(y);
+                    for (int x = 0; x < b.cols; ++x)
+                    {
+                        delta = (float)(arow[j + x] - brow[x]);
+                        sum += delta * delta;
+                    }
+                }
+                c.at<float>(i, j) = sum;
+            }
+        }
+    }
+
+
+    bool check8U(const Mat& a, const Mat& b)
+    {
+        if (a.size() != b.size())
+        {
+            ts->printf(CvTS::CONSOLE, "bad size");
+            ts->set_failed_test_info(CvTS::FAIL_INVALID_OUTPUT);
+            return false;
+        }
+
+        for (int i = 0; i < a.rows; ++i)
+        {
+            for (int j = 0; j < a.cols; ++j)
+            {
+                float v1 = a.at<float>(i, j);
+                float v2 = b.at<float>(i, j);
+                if (fabs(v1 - v2) > 1e-3f)
+                {
+                    ts->printf(CvTS::CONSOLE, "(gold)%f != %f, pos: (%d, %d) size: (%d, %d)\n", 
+                               v1, v2, j, i, a.cols, a.rows);
+                    ts->set_failed_test_info(CvTS::FAIL_INVALID_OUTPUT);
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+} match_template_test;