Merge pull request #21422 from alexgiving:atrutnev/wrong_destination_size_deduction_resize

modules/gapi/include/opencv2/gapi/imgproc.hpp

@@ -504,8 +504,8 @@ namespace imgproc {
             }
             else
             {
-                int outSz_w = static_cast<int>(round(in.size.width  * fx));
-                int outSz_h = static_cast<int>(round(in.size.height * fy));
+                int outSz_w = saturate_cast<int>(in.size.width  * fx);
+                int outSz_h = saturate_cast<int>(in.size.height * fy);
                 GAPI_Assert(outSz_w > 0 && outSz_h > 0);
                 return in.withSize(Size(outSz_w, outSz_h));
             }

modules/gapi/perf/common/gapi_core_perf_tests_inl.hpp

@@ -2333,8 +2333,8 @@ PERF_TEST_P_(ResizeFxFyPerfTest, TestPerformance)
     MatType type = -1;
     int interp = 1;
     cv::Size sz;
-    double fx = 0.0;
-    double fy = 0.0;
+    double fx = 1.0;
+    double fy = 1.0;
     cv::GCompileArgs compile_args;
     std::tie(cmpF, type, interp, sz, fx, fy, compile_args) = GetParam();
 
@@ -2342,7 +2342,7 @@ PERF_TEST_P_(ResizeFxFyPerfTest, TestPerformance)
     cv::Scalar mean = cv::Scalar::all(127);
     cv::Scalar stddev = cv::Scalar::all(40.f);
     cv::randn(in_mat1, mean, stddev);
-    cv::Size sz_out = cv::Size(saturate_cast<int>(sz.width *fx), saturate_cast<int>(sz.height*fy));
+    cv::Size sz_out = cv::Size();
     out_mat_gapi = cv::Mat(sz_out, type);
     out_mat_ocv = cv::Mat(sz_out, type);
 

modules/gapi/perf/cpu/gapi_core_perf_tests_fluid.cpp

@@ -353,7 +353,7 @@ INSTANTIATE_TEST_CASE_P(ResizeInSimpleGraphPerfTestFluid, ResizeInSimpleGraphPer
             Values(cv::compile_args(CORE_FLUID, IMGPROC_FLUID))));
 
 INSTANTIATE_TEST_CASE_P(ResizeFxFyPerfTestFluid, ResizeFxFyPerfTest,
-    Combine(Values(Tolerance_FloatRel_IntAbs(1e-5, 1).to_compare_f()),
+    Combine(Values(AbsExact().to_compare_f()),
             Values(CV_8UC3),
             Values(cv::INTER_LINEAR),
             Values(szSmall128, szVGA, sz720p, sz1080p),

modules/gapi/perf/gpu/gapi_core_perf_tests_gpu.cpp

@@ -334,10 +334,10 @@ INSTANTIATE_TEST_CASE_P(ResizePerfTestGPU, ResizePerfTest,
             Values(cv::compile_args(CORE_GPU))));
 
 INSTANTIATE_TEST_CASE_P(ResizeFxFyPerfTestGPU, ResizeFxFyPerfTest,
-    Combine(Values(AbsSimilarPoints(2, 0.05).to_compare_f()),
+    Combine(Values(AbsExact().to_compare_f()),
             Values(CV_8UC1, CV_16UC1, CV_16SC1),
             Values(cv::INTER_NEAREST, cv::INTER_LINEAR, cv::INTER_AREA),
-            Values( szSmall128, szVGA, sz720p, sz1080p ),
+            Values(szSmall128, szVGA, sz720p, sz1080p),
             Values(0.5, 0.1),
             Values(0.5, 0.1),
             Values(cv::compile_args(CORE_GPU))));