void DegradeFrameSource::nextFrame(cv::OutputArray frame)
{
base_->nextFrame(origFrame_);
cv::GaussianBlur(origFrame_, blurred_, cv::Size(5, 5), 0);
cv::resize(blurred_, deg_, cv::Size(), iscale_, iscale_, cv::INTER_NEAREST);
addGaussNoise(deg_, 10.0);
addSpikeNoise(deg_, 500);
cv::superres::arrCopy(deg_, frame);
}
void AllignedFrameSource::nextFrame(cv::OutputArray frame)
{
base_->nextFrame(origFrame_);
if (origFrame_.rows % scale_ == 0 && origFrame_.cols % scale_ == 0)
{
cv::superres::arrCopy(origFrame_, frame);
}
else
{
cv::Rect ROI(0, 0, (origFrame_.cols / scale_) * scale_, (origFrame_.rows / scale_) * scale_);
cv::superres::arrCopy(origFrame_(ROI), frame);
}
}
void SuperResolution::RunTest(cv::Ptr<cv::superres::SuperResolution> superRes)
{
const std::string inputVideoName = cvtest::TS::ptr()->get_data_path() + "car.avi";
const int scale = 2;
const int iterations = 100;
const int temporalAreaRadius = 2;
ASSERT_FALSE( superRes.empty() );
const int btvKernelSize = superRes->getInt("btvKernelSize");
superRes->set("scale", scale);
superRes->set("iterations", iterations);
superRes->set("temporalAreaRadius", temporalAreaRadius);
cv::Ptr<cv::superres::FrameSource> goldSource(new AllignedFrameSource(cv::superres::createFrameSource_Video(inputVideoName), scale));
cv::Ptr<cv::superres::FrameSource> lowResSource(new DegradeFrameSource(new AllignedFrameSource(cv::superres::createFrameSource_Video(inputVideoName), scale), scale));
// skip first frame
cv::Mat frame;
lowResSource->nextFrame(frame);
goldSource->nextFrame(frame);
cv::Rect inner(btvKernelSize, btvKernelSize, frame.cols - 2 * btvKernelSize, frame.rows - 2 * btvKernelSize);
superRes->setInput(lowResSource);
double srAvgMSSIM = 0.0;
const int count = 10;
cv::Mat goldFrame, superResFrame;
for (int i = 0; i < count; ++i)
{
goldSource->nextFrame(goldFrame);
ASSERT_FALSE( goldFrame.empty() );
superRes->nextFrame(superResFrame);
ASSERT_FALSE( superResFrame.empty() );
const double srMSSIM = MSSIM(goldFrame(inner), superResFrame);
srAvgMSSIM += srMSSIM;
}
srAvgMSSIM /= count;
EXPECT_GE( srAvgMSSIM, 0.5 );
}