parallel version of remap, resize, warpaffine, warpPerspective. Some…

parallel version of remap, resize, warpaffine, warpPerspective. Some optimization for  2x decimation in resize algorithm

modules/imgproc/perf/perf_remap.cpp

+#include "perf_precomp.hpp"
+
+using namespace std;
+using namespace cv;
+using namespace perf;
+using namespace testing;
+using std::tr1::make_tuple;
+using std::tr1::get;
+
+CV_ENUM(MatrixType, CV_16UC1, CV_16SC1, CV_32FC1)
+CV_ENUM(MapType, CV_16SC2, CV_32FC1, CV_32FC2)
+CV_ENUM(InterType, INTER_LINEAR, INTER_CUBIC, INTER_LANCZOS4, INTER_NEAREST)
+
+typedef TestBaseWithParam< tr1::tuple<Size, MatrixType, MapType, InterType> > TestRemap;
+
+PERF_TEST_P( TestRemap, Remap,
+             Combine(
+                Values( szVGA, sz1080p ), 
+                ValuesIn( MatrixType::all() ), 
+                ValuesIn( MapType::all() ), 
+                ValuesIn( InterType::all() ) 
+             )
+)
+{
+    Size sz;
+    int src_type, map1_type, inter_type;
+
+    sz         = get<0>(GetParam());
+    src_type   = get<1>(GetParam());
+    map1_type  = get<2>(GetParam());
+    inter_type = get<3>(GetParam());
+
+    Mat src(sz, src_type);
+    Mat map1(sz, map1_type);
+    Mat dst(sz, src_type);
+    
+    Mat map2(map1_type == CV_32FC1 ? sz : Size(), CV_32FC1);
+        
+    RNG rng;
+    rng.fill(src, RNG::UNIFORM, 0, 256);
+    
+    for (int j = 0; j < map1.rows; ++j)
+        for (int i = 0; i < map1.cols; ++i)
+            switch (map1_type)
+            {
+                case CV_32FC1:
+                    map1.at<float>(j, i) = src.cols - i;
+                    map2.at<float>(j, i) = j;
+                    break;
+                case CV_32FC2:
+                    map1.at<Vec2f>(j, i)[0] = src.cols - i;
+                    map1.at<Vec2f>(j, i)[1] = j;
+                    break;
+                case CV_16SC2:
+                    map1.at<Vec2s>(j, i)[0] = src.cols - i;
+                    map1.at<Vec2s>(j, i)[1] = j;
+                    break;
+                default:
+                    CV_Assert(0);
+            }
+
+
+    declare.in(src, WARMUP_RNG).out(dst).time(20);
+
+    TEST_CYCLE() remap(src, dst, map1, map2, inter_type);
+
+    SANITY_CHECK(dst);
+}

modules/imgproc/perf/perf_resize.cpp

@@ -59,11 +59,11 @@ PERF_TEST_P(MatInfo_Size_Size, resizeDownLinear,
 typedef tr1::tuple<MatType, Size, int> MatInfo_Size_Scale_t;
 typedef TestBaseWithParam<MatInfo_Size_Scale_t> MatInfo_Size_Scale;
 
-PERF_TEST_P(MatInfo_Size_Scale, resizeAreaFast,
+PERF_TEST_P(MatInfo_Size_Scale, ResizeAreaFast,
             testing::Combine(
                 testing::Values(CV_8UC1, CV_8UC4),
                 testing::Values(szVGA, szqHD, sz720p, sz1080p),
-                testing::Values(2, 4)
+                testing::Values(2)
                 )
             )
 {
@@ -84,3 +84,31 @@ PERF_TEST_P(MatInfo_Size_Scale, resizeAreaFast,
     //difference equal to 1 is allowed because of different possible rounding modes: round-to-nearest vs bankers' rounding
     SANITY_CHECK(dst, 1);
 }
+
+
+typedef TestBaseWithParam<tr1::tuple<MatType, Size, double> > MatInfo_Size_Scale_Area;
+
+PERF_TEST_P(MatInfo_Size_Scale_Area, ResizeArea,
+            testing::Combine(
+                testing::Values(CV_8UC1, CV_8UC4),
+                testing::Values(szVGA, szqHD, sz720p, sz1080p),
+                testing::Values(2.4, 3.4, 1.3)
+                )
+            )
+{
+    int matType = get<0>(GetParam());
+    Size from = get<1>(GetParam());
+    double scale = get<2>(GetParam());
+
+    cv::Mat src(from, matType);
+    
+    Size to(cvRound(from.width * scale), cvRound(from.height * scale));
+    cv::Mat dst(to, matType);
+
+    declare.in(src, WARMUP_RNG).out(dst);
+
+    TEST_CYCLE() resize(src, dst, dst.size(), 0, 0, INTER_AREA);
+
+    //difference equal to 1 is allowed because of different possible rounding modes: round-to-nearest vs bankers' rounding
+    SANITY_CHECK(dst, 1);
+}