disabled NPP resize for 8uc4+Cubic (Bug #2388)

modules/gpu/src/resize.cpp

@@ -102,7 +102,7 @@ void cv::gpu::resize(const GpuMat& src, GpuMat& dst, Size dsize, double fx, doub
     src.locateROI(wholeSize, ofs);
 
     bool useNpp = (src.type() == CV_8UC1 || src.type() == CV_8UC4);
-    useNpp = useNpp && (interpolation == INTER_NEAREST || interpolation == INTER_LINEAR || (src.type() == CV_8UC4 && interpolation != INTER_AREA));
+    useNpp = useNpp && (interpolation == INTER_NEAREST || interpolation == INTER_LINEAR);
 
     if (useNpp)
     {

modules/gpu/test/test_resize.cpp

@@ -226,10 +226,8 @@ PARAM_TEST_CASE(ResizeNPP, cv::gpu::DeviceInfo, MatType, double, Interpolation)
 
 TEST_P(ResizeNPP, Accuracy)
 {
-    if (type == CV_8UC1 && interpolation == cv::INTER_CUBIC)
-        return;
-
     cv::Mat src = readImageType("stereobp/aloe-L.png", type);
+    ASSERT_FALSE(src.empty());
 
     cv::gpu::GpuMat dst;
     cv::gpu::resize(loadMat(src), dst, cv::Size(), coeff, coeff, interpolation);
@@ -244,6 +242,6 @@ INSTANTIATE_TEST_CASE_P(GPU_ImgProc, ResizeNPP, testing::Combine(
     ALL_DEVICES,
     testing::Values(MatType(CV_8UC1), MatType(CV_8UC4)),
     testing::Values(0.3, 0.5, 1.5, 2.0),
-    testing::Values(Interpolation(cv::INTER_NEAREST), Interpolation(cv::INTER_LINEAR), Interpolation(cv::INTER_CUBIC))));
+    testing::Values(Interpolation(cv::INTER_NEAREST), Interpolation(cv::INTER_LINEAR))));
 
 #endif // HAVE_CUDA