Tegra optimization for warpPerspective() and 2 new perf tests

modules/imgproc/perf/perf_warp.cpp

+#include "perf_precomp.hpp"
+
+using namespace std;
+using namespace cv;
+using namespace perf;
+using namespace testing;
+
+CV_ENUM(BorderMode, BORDER_CONSTANT, BORDER_REPLICATE);
+CV_ENUM(InterType, INTER_NEAREST, INTER_LINEAR);
+
+typedef TestBaseWithParam< tr1::tuple<Size, InterType, BorderMode> > TestWarpAffine;
+typedef TestBaseWithParam< tr1::tuple<Size, InterType, BorderMode> > TestWarpPerspective;
+
+
+PERF_TEST_P( TestWarpAffine, WarpAffine,
+             Combine(
+                Values( szVGA, sz720p, sz1080p ),
+                ValuesIn( InterType::all() ),
+                ValuesIn( BorderMode::all() )
+             )
+)
+{
+    Size sz;
+    int borderMode, interType;
+    tr1::tie(sz, borderMode, interType) = GetParam();
+
+
+    Mat src, img = imread(getDataPath("cv/shared/fruits.jpg"));
+    cvtColor(img, src, COLOR_BGR2RGBA, 4);
+    Mat warpMat = getRotationMatrix2D(Point2f(src.cols/2, src.rows/2), 30, 2.2);
+    Mat dst(sz, CV_8UC4);
+
+    //declare.in(src).out(dst);
+
+    TEST_CYCLE() warpAffine( src, dst, warpMat, sz, interType, borderMode, Scalar::all(150) );
+
+    SANITY_CHECK(dst);
+
+}
+
+PERF_TEST_P( TestWarpPerspective, WarpPerspective,
+             Combine(
+                Values( szVGA, sz720p, sz1080p ),
+                ValuesIn( InterType::all() ),
+                ValuesIn( BorderMode::all() )
+             )
+)
+{
+    Size sz;
+    int borderMode, interType;
+    tr1::tie(sz, borderMode, interType) = GetParam();
+
+
+    Mat src, img = imread(getDataPath("cv/shared/fruits.jpg"));
+    cvtColor(img, src, COLOR_BGR2RGBA, 4);
+    Mat rotMat = getRotationMatrix2D(Point2f(src.cols/2, src.rows/2), 30, 2.2);
+    Mat warpMat(3, 3, CV_64FC1);
+    for(int r=0; r<2; r++)
+        for(int c=0; c<3; c++)
+            warpMat.at<double>(r, c) = rotMat.at<double>(r, c);
+    warpMat.at<double>(2, 0) = .3/sz.width;
+    warpMat.at<double>(2, 1) = .3/sz.height;
+    warpMat.at<double>(2, 2) = 1;
+    Mat dst(sz, CV_8UC4);
+
+    //declare.in(src).out(dst);
+
+    TEST_CYCLE() warpPerspective( src, dst, warpMat, sz, interType, borderMode, Scalar::all(150) );
+
+    SANITY_CHECK(dst);
+
+}
+

modules/imgproc/src/imgwarp.cpp

@@ -2977,6 +2977,11 @@ void cv::warpPerspective( InputArray _src, OutputArray _dst, InputArray _M0,
     if( !(flags & WARP_INVERSE_MAP) )
          invert(matM, matM);
 
+#ifdef HAVE_TEGRA_OPTIMIZATION
+    if( tegra::warpPerspective(src, dst, M, interpolation, borderType, borderValue) )
+        return;
+#endif
+
     int x, y, x1, y1, width = dst.cols, height = dst.rows;
 
     int bh0 = std::min(BLOCK_SZ/2, height);