1 /*M///////////////////////////////////////////////////////////////////////////////////////
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9 //
10 // License Agreement
11 // For Open Source Computer Vision Library
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41 //M*/
42
43 #include "precomp.hpp"
44
45 using namespace cv;
46 using namespace cv::cuda;
47
48 #if !defined (HAVE_CUDA) || !defined (HAVE_OPENCV_CUDALEGACY) || defined (CUDA_DISABLER)
49
interpolateFrames(const GpuMat &,const GpuMat &,const GpuMat &,const GpuMat &,const GpuMat &,const GpuMat &,float,GpuMat &,GpuMat &,Stream &)50 void cv::cuda::interpolateFrames(const GpuMat&, const GpuMat&, const GpuMat&, const GpuMat&, const GpuMat&, const GpuMat&, float, GpuMat&, GpuMat&, Stream&) { throw_no_cuda(); }
51
52 #else
53
interpolateFrames(const GpuMat & frame0,const GpuMat & frame1,const GpuMat & fu,const GpuMat & fv,const GpuMat & bu,const GpuMat & bv,float pos,GpuMat & newFrame,GpuMat & buf,Stream & s)54 void cv::cuda::interpolateFrames(const GpuMat& frame0, const GpuMat& frame1, const GpuMat& fu, const GpuMat& fv, const GpuMat& bu, const GpuMat& bv,
55 float pos, GpuMat& newFrame, GpuMat& buf, Stream& s)
56 {
57 CV_Assert(frame0.type() == CV_32FC1);
58 CV_Assert(frame1.size() == frame0.size() && frame1.type() == frame0.type());
59 CV_Assert(fu.size() == frame0.size() && fu.type() == frame0.type());
60 CV_Assert(fv.size() == frame0.size() && fv.type() == frame0.type());
61 CV_Assert(bu.size() == frame0.size() && bu.type() == frame0.type());
62 CV_Assert(bv.size() == frame0.size() && bv.type() == frame0.type());
63
64 newFrame.create(frame0.size(), frame0.type());
65
66 buf.create(6 * frame0.rows, frame0.cols, CV_32FC1);
67 buf.setTo(Scalar::all(0));
68
69 // occlusion masks
70 GpuMat occ0 = buf.rowRange(0 * frame0.rows, 1 * frame0.rows);
71 GpuMat occ1 = buf.rowRange(1 * frame0.rows, 2 * frame0.rows);
72
73 // interpolated forward flow
74 GpuMat fui = buf.rowRange(2 * frame0.rows, 3 * frame0.rows);
75 GpuMat fvi = buf.rowRange(3 * frame0.rows, 4 * frame0.rows);
76
77 // interpolated backward flow
78 GpuMat bui = buf.rowRange(4 * frame0.rows, 5 * frame0.rows);
79 GpuMat bvi = buf.rowRange(5 * frame0.rows, 6 * frame0.rows);
80
81 size_t step = frame0.step;
82
83 CV_Assert(frame1.step == step && fu.step == step && fv.step == step && bu.step == step && bv.step == step && newFrame.step == step && buf.step == step);
84
85 cudaStream_t stream = StreamAccessor::getStream(s);
86 NppStStreamHandler h(stream);
87
88 NppStInterpolationState state;
89
90 state.size = NcvSize32u(frame0.cols, frame0.rows);
91 state.nStep = static_cast<Ncv32u>(step);
92 state.pSrcFrame0 = const_cast<Ncv32f*>(frame0.ptr<Ncv32f>());
93 state.pSrcFrame1 = const_cast<Ncv32f*>(frame1.ptr<Ncv32f>());
94 state.pFU = const_cast<Ncv32f*>(fu.ptr<Ncv32f>());
95 state.pFV = const_cast<Ncv32f*>(fv.ptr<Ncv32f>());
96 state.pBU = const_cast<Ncv32f*>(bu.ptr<Ncv32f>());
97 state.pBV = const_cast<Ncv32f*>(bv.ptr<Ncv32f>());
98 state.pos = pos;
99 state.pNewFrame = newFrame.ptr<Ncv32f>();
100 state.ppBuffers[0] = occ0.ptr<Ncv32f>();
101 state.ppBuffers[1] = occ1.ptr<Ncv32f>();
102 state.ppBuffers[2] = fui.ptr<Ncv32f>();
103 state.ppBuffers[3] = fvi.ptr<Ncv32f>();
104 state.ppBuffers[4] = bui.ptr<Ncv32f>();
105 state.ppBuffers[5] = bvi.ptr<Ncv32f>();
106
107 ncvSafeCall( nppiStInterpolateFrames(&state) );
108
109 if (stream == 0)
110 cudaSafeCall( cudaDeviceSynchronize() );
111 }
112
113 #endif /* HAVE_CUDA */
114