Created a perftest for convertTo, updated perftests for arithmetical operations

modules/core/perf/perf_arithm.cpp

@@ -7,7 +7,7 @@ using std::tr1::make_tuple;
 using std::tr1::get;
 
 #define TYPICAL_MAT_SIZES_CORE_ARITHM   TYPICAL_MAT_SIZES 
-#define TYPICAL_MAT_TYPES_CORE_ARITHM   CV_8UC1, CV_8SC1, CV_8UC4, CV_32SC1, CV_32FC1
+#define TYPICAL_MAT_TYPES_CORE_ARITHM   CV_8UC1, CV_8SC1, CV_16SC1, CV_16SC2, CV_16SC3, CV_16SC4, CV_8UC4, CV_32SC1, CV_32FC1
 #define TYPICAL_MATS_CORE_ARITHM        testing::Combine( testing::Values( TYPICAL_MAT_SIZES_CORE_ARITHM ), testing::Values( TYPICAL_MAT_TYPES_CORE_ARITHM ) )
 
 #ifdef ANDROID

modules/core/perf/pert_convertTo.cpp

+#include "perf_precomp.hpp"
+
+using namespace std;
+using namespace cv;
+using namespace perf;
+using std::tr1::make_tuple;
+using std::tr1::get;
+
+typedef std::tr1::tuple<Size, MatType, MatType, int, double> Size_DepthSrc_DepthDst_Channels_alpha_t;
+typedef perf::TestBaseWithParam<Size_DepthSrc_DepthDst_Channels_alpha_t> Size_DepthSrc_DepthDst_Channels_alpha;
+
+PERF_TEST_P( Size_DepthSrc_DepthDst_Channels_alpha, convertTo,
+             testing::Combine
+             (
+                 testing::Values(TYPICAL_MAT_SIZES),
+                 testing::Values(CV_8U, CV_16S),
+				 testing::Values(CV_8U, CV_16S, CV_32F, CV_64F),
+                 testing::Values(1, 2, 3, 4),
+				 testing::Values(1.0, 1./255)
+             )
+           )
+{
+    Size sz = get<0>(GetParam());
+    int depthSrc = get<1>(GetParam());
+	int depthDst = get<2>(GetParam());
+    int channels = get<3>(GetParam());
+	double alpha = get<4>(GetParam());
+
+    Mat src(sz, CV_MAKETYPE(depthSrc, channels));  
+	randu(src, 0, 255);
+	Mat dst(sz, CV_MAKETYPE(depthDst, channels)); 
+
+	TEST_CYCLE() src.convertTo(dst, depthDst, alpha);
+
+    SANITY_CHECK(dst);
+}
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