Added new perf tests for boxFilter

modules/imgproc/doc/filtering.rst

@@ -511,7 +511,7 @@ Unnormalized box filter is useful for computing various integral characteristics
 
 .. seealso::
 
-    :ocv:func:`boxFilter`,
+    :ocv:func:`blur`,
     :ocv:func:`bilateralFilter`,
     :ocv:func:`GaussianBlur`,
     :ocv:func:`medianBlur`,

modules/imgproc/perf/perf_blur.cpp

@@ -92,6 +92,56 @@ PERF_TEST_P(Size_MatType_BorderType3x3, blur3x3,
     SANITY_CHECK(dst, 1e-3);
 }
 
+PERF_TEST_P(Size_MatType_BorderType3x3, box3x3,
+            testing::Combine(
+                testing::Values(szODD, szQVGA, szVGA, sz720p),
+                testing::Values(CV_8UC1, CV_16SC1, CV_32SC1, CV_32FC1, CV_32FC3),
+                testing::ValuesIn(BorderType3x3::all())
+                )
+            )
+{
+    Size size = get<0>(GetParam());
+    int type = get<1>(GetParam());
+    BorderType3x3 btype = get<2>(GetParam());
+
+    Mat src(size, type);
+    Mat dst(size, type);
+
+    declare.in(src, WARMUP_RNG).out(dst);
+
+    TEST_CYCLE() boxFilter(src, dst, -1, Size(3,3), Point(-1,-1), false, btype);
+
+    SANITY_CHECK(dst, 1e-6, ERROR_RELATIVE);
+}
+
+PERF_TEST_P(Size_MatType_BorderType3x3, box3x3_inplace,
+            testing::Combine(
+                testing::Values(szODD, szQVGA, szVGA, sz720p),
+                testing::Values(CV_8UC1, CV_16SC1, CV_32SC1, CV_32FC1, CV_32FC3),
+                testing::ValuesIn(BorderType3x3::all())
+                )
+            )
+{
+    Size size = get<0>(GetParam());
+    int type = get<1>(GetParam());
+    BorderType3x3 btype = get<2>(GetParam());
+
+    Mat src(size, type);
+    Mat dst(size, type);
+
+    declare.in(src, WARMUP_RNG).out(dst);
+
+    while(next())
+    {
+        src.copyTo(dst);
+        startTimer();
+        boxFilter(dst, dst, -1, Size(3,3), Point(-1,-1), false, btype);
+        stopTimer();
+    }
+
+    SANITY_CHECK(dst, 1e-6, ERROR_RELATIVE);
+}
+
 PERF_TEST_P(Size_MatType_BorderType, gaussianBlur5x5,
             testing::Combine(
                 testing::Values(szODD, szQVGA, szVGA, sz720p),
@@ -117,7 +167,7 @@ PERF_TEST_P(Size_MatType_BorderType, gaussianBlur5x5,
 PERF_TEST_P(Size_MatType_BorderType, blur5x5,
             testing::Combine(
                 testing::Values(szODD, szQVGA, szVGA, sz720p),
-                testing::Values(CV_8UC1, CV_8UC4, CV_16UC1, CV_16SC1, CV_32FC1),
+                testing::Values(CV_8UC1, CV_8UC4, CV_16UC1, CV_16SC1, CV_32FC1, CV_32FC3),
                 testing::ValuesIn(BorderType::all())
                 )
             )

modules/imgproc/src/smooth.cpp

@@ -279,7 +279,7 @@ cv::Ptr<cv::FilterEngine> cv::createBoxFilter( int srcType, int dstType, Size ks
 {
     int sdepth = CV_MAT_DEPTH(srcType);
     int cn = CV_MAT_CN(srcType), sumType = CV_64F;
-    if( sdepth < CV_32S && (!normalize ||
+    if( sdepth <= CV_32S && (!normalize ||
         ksize.width*ksize.height <= (sdepth == CV_8U ? (1<<23) :
             sdepth == CV_16U ? (1 << 15) : (1 << 16))) )
         sumType = CV_32S;