generic-library/opencv
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

updated GPU version of TVL1

Browse Source
This commit is contained in:
Vladislav Vinogradov 2013-03-29 11:36:36 +04:00
parent 6062601c4d
commit 8d97d9598e
4 changed files with 19 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
modules/gpu/include/opencv2/gpu.hpp
View File

@ -1810,6 +1810,8 @@ public:
*/
int iterations;
double scaleStep;
bool useInitialFlow;
private:

3
modules/gpu/perf/perf_video.cpp
View File

@ -434,6 +434,9 @@ PERF_TEST_P(ImagePair, Video_OpticalFlowDual_TVL1,
cv::Mat flow;
cv::Ptr<cv::DenseOpticalFlow> alg = cv::createOptFlow_DualTVL1();
alg->set("medianFiltering", 1);
alg->set("innerIterations", 1);
alg->set("outerIterations", 300);
TEST_CYCLE() alg->calc(frame0, frame1, flow);

17
modules/gpu/src/tvl1flow.cpp
View File

@ -63,6 +63,7 @@ cv::gpu::OpticalFlowDual_TVL1_GPU::OpticalFlowDual_TVL1_GPU()
warps = 5;
epsilon = 0.01;
iterations = 300;
scaleStep = 0.8;
useInitialFlow = false;
}
@ -112,8 +113,8 @@ void cv::gpu::OpticalFlowDual_TVL1_GPU::operator ()(const GpuMat& I0, const GpuM
// create the scales
for (int s = 1; s < nscales; ++s)
{
gpu::pyrDown(I0s[s - 1], I0s[s]);
gpu::pyrDown(I1s[s - 1], I1s[s]);
gpu::resize(I0s[s-1], I0s[s], Size(), scaleStep, scaleStep);
gpu::resize(I1s[s-1], I1s[s], Size(), scaleStep, scaleStep);
if (I0s[s].cols < 16 || I0s[s].rows < 16)
{
@ -123,11 +124,11 @@ void cv::gpu::OpticalFlowDual_TVL1_GPU::operator ()(const GpuMat& I0, const GpuM
if (useInitialFlow)
{
gpu::pyrDown(u1s[s - 1], u1s[s]);
gpu::pyrDown(u2s[s - 1], u2s[s]);
gpu::resize(u1s[s-1], u1s[s], Size(), scaleStep, scaleStep);
gpu::resize(u2s[s-1], u2s[s], Size(), scaleStep, scaleStep);
gpu::multiply(u1s[s], Scalar::all(0.5), u1s[s]);
gpu::multiply(u2s[s], Scalar::all(0.5), u2s[s]);
gpu::multiply(u1s[s], Scalar::all(scaleStep), u1s[s]);
gpu::multiply(u2s[s], Scalar::all(scaleStep), u2s[s]);
}
else
{
@ -159,8 +160,8 @@ void cv::gpu::OpticalFlowDual_TVL1_GPU::operator ()(const GpuMat& I0, const GpuM
gpu::resize(u2s[s], u2s[s - 1], I0s[s - 1].size());
// scale the optical flow with the appropriate zoom factor
gpu::multiply(u1s[s - 1], Scalar::all(2), u1s[s - 1]);
gpu::multiply(u2s[s - 1], Scalar::all(2), u2s[s - 1]);
gpu::multiply(u1s[s - 1], Scalar::all(1/scaleStep), u1s[s - 1]);
gpu::multiply(u2s[s - 1], Scalar::all(1/scaleStep), u2s[s - 1]);
}
}

7
modules/gpu/test/test_optflow.cpp
View File

@ -435,13 +435,16 @@ GPU_TEST_P(OpticalFlowDual_TVL1, Accuracy)
d_alg(loadMat(frame0, useRoi), loadMat(frame1, useRoi), d_flowx, d_flowy);
cv::Ptr<cv::DenseOpticalFlow> alg = cv::createOptFlow_DualTVL1();
alg->set("medianFiltering", 1);
alg->set("innerIterations", 1);
alg->set("outerIterations", d_alg.iterations);
cv::Mat flow;
alg->calc(frame0, frame1, flow);
cv::Mat gold[2];
cv::split(flow, gold);
EXPECT_MAT_SIMILAR(gold[0], d_flowx, 3e-3);
EXPECT_MAT_SIMILAR(gold[1], d_flowy, 3e-3);
EXPECT_MAT_SIMILAR(gold[0], d_flowx, 4e-3);
EXPECT_MAT_SIMILAR(gold[1], d_flowy, 4e-3);
}
INSTANTIATE_TEST_CASE_P(GPU_Video, OpticalFlowDual_TVL1, testing::Combine(