added tests for VIBE_GPU and GMG_GPU

modules/gpu/test/test_video.cpp

@@ -624,6 +624,9 @@ TEST_P(MOG2, Update)
 
 TEST_P(MOG2, getBackgroundImage)
 {
+    if (useGray)
+        return;
+
     cv::VideoCapture cap(inputFile);
     ASSERT_TRUE(cap.isOpened());
 
@@ -640,13 +643,6 @@ TEST_P(MOG2, getBackgroundImage)
         cap >> frame;
         ASSERT_FALSE(frame.empty());
 
-//        if (useGray)
-//        {
-//            cv::Mat temp;
-//            cv::cvtColor(frame, temp, cv::COLOR_BGR2GRAY);
-//            cv::swap(temp, frame);
-//        }
-
         mog2(loadMat(frame, useRoi), foreground);
 
         mog2_gold(frame, foreground_gold);
@@ -667,6 +663,101 @@ INSTANTIATE_TEST_CASE_P(GPU_Video, MOG2, testing::Combine(
     testing::Values(UseGray(true), UseGray(false)),
     WHOLE_SUBMAT));
 
+//////////////////////////////////////////////////////
+// VIBE
+
+PARAM_TEST_CASE(VIBE, cv::gpu::DeviceInfo, cv::Size, MatType, UseRoi)
+{
+};
+
+TEST_P(VIBE, Accuracy)
+{
+    const cv::gpu::DeviceInfo devInfo = GET_PARAM(0);
+    cv::gpu::setDevice(devInfo.deviceID());
+    const cv::Size size = GET_PARAM(1);
+    const int type = GET_PARAM(2);
+    const bool useRoi = GET_PARAM(3);
+
+    const cv::Mat fullfg(size, CV_8UC1, cv::Scalar::all(255));
+
+    cv::Mat frame = randomMat(size, type, 0.0, 100);
+    cv::gpu::GpuMat d_frame = loadMat(frame, useRoi);
+
+    cv::gpu::VIBE_GPU vibe;
+    cv::gpu::GpuMat d_fgmask = createMat(size, CV_8UC1, useRoi);
+    vibe.initialize(d_frame);
+
+    for (int i = 0; i < 20; ++i)
+        vibe(d_frame, d_fgmask);
+
+    frame = randomMat(size, type, 160, 255);
+    d_frame = loadMat(frame, useRoi);
+    vibe(d_frame, d_fgmask);
+
+    // now fgmask should be entirely foreground
+    ASSERT_MAT_NEAR(fullfg, d_fgmask, 0);
+}
+
+INSTANTIATE_TEST_CASE_P(GPU_Video, VIBE, testing::Combine(
+    ALL_DEVICES,
+    DIFFERENT_SIZES,
+    testing::Values(MatType(CV_8UC1), MatType(CV_8UC3), MatType(CV_8UC4)),
+    WHOLE_SUBMAT));
+
+//////////////////////////////////////////////////////
+// GMG
+
+PARAM_TEST_CASE(GMG, cv::gpu::DeviceInfo, cv::Size, MatDepth, Channels, UseRoi)
+{
+};
+
+TEST_P(GMG, Accuracy)
+{
+    const cv::gpu::DeviceInfo devInfo = GET_PARAM(0);
+    cv::gpu::setDevice(devInfo.deviceID());
+    const cv::Size size = GET_PARAM(1);
+    const int depth = GET_PARAM(2);
+    const int channels = GET_PARAM(3);
+    const bool useRoi = GET_PARAM(4);
+
+    const int type = CV_MAKE_TYPE(depth, channels);
+
+    const cv::Mat zeros(size, CV_8UC1, cv::Scalar::all(0));
+    const cv::Mat fullfg(size, CV_8UC1, cv::Scalar::all(255));
+
+    cv::Mat frame = randomMat(size, type, 0, 100);
+    cv::gpu::GpuMat d_frame = loadMat(frame, useRoi);
+
+    cv::gpu::GMG_GPU gmg;
+    gmg.numInitializationFrames = 5;
+    gmg.smoothingRadius = 0;
+    gmg.initialize(d_frame.size(), 0, 255);
+
+    cv::gpu::GpuMat d_fgmask = createMat(size, CV_8UC1, useRoi);
+
+    for (int i = 0; i < gmg.numInitializationFrames; ++i)
+    {
+        gmg(d_frame, d_fgmask);
+
+        // fgmask should be entirely background during training
+        ASSERT_MAT_NEAR(zeros, d_fgmask, 0);
+    }
+
+    frame = randomMat(size, type, 160, 255);
+    d_frame = loadMat(frame, useRoi);
+    gmg(d_frame, d_fgmask);
+
+    // now fgmask should be entirely foreground
+    ASSERT_MAT_NEAR(fullfg, d_fgmask, 0);
+}
+
+INSTANTIATE_TEST_CASE_P(GPU_Video, GMG, testing::Combine(
+    ALL_DEVICES,
+    DIFFERENT_SIZES,
+    testing::Values(MatType(CV_8U), MatType(CV_16U), MatType(CV_32F)),
+    testing::Values(Channels(1), Channels(3), Channels(4)),
+    WHOLE_SUBMAT));
+
 //////////////////////////////////////////////////////
 // VideoWriter