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Merge pull request #3066 from vpisarev:minor_fixes

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This commit is contained in:
Vadim Pisarevsky 2014-08-11 10:27:30 +00:00
commit 07744af790
3 changed files with 21 additions and 10 deletions
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7
modules/video/src/ecc.cpp
View File

@ -297,7 +297,12 @@ static void update_warping_matrix_ECC (Mat& map_matrix, const Mat& update, const
mapPtr[5] += updatePtr[7];
}
if (motionType == MOTION_EUCLIDEAN) {
double new_theta = acos(mapPtr[0]) + updatePtr[0];
double new_theta = updatePtr[0];
if (mapPtr[3]>0)
new_theta += acos(mapPtr[0]);
if (mapPtr[3]<0)
new_theta -= acos(mapPtr[0]);
mapPtr[2] += updatePtr[1];
mapPtr[5] += updatePtr[2];

16
modules/video/src/optflowgf.cpp
View File

@ -43,6 +43,10 @@
#include "precomp.hpp"
#include "opencl_kernels_video.hpp"
#if defined __APPLE__ || defined ANDROID
#define SMALL_LOCALSIZE
#endif
//
// 2D dense optical flow algorithm from the following paper:
// Gunnar Farneback. "Two-Frame Motion Estimation Based on Polynomial Expansion".
@ -836,7 +840,7 @@ private:
bool gaussianBlurOcl(const UMat &src, int ksizeHalf, UMat &dst)
{
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 128, 1};
#else
size_t localsize[2] = { 256, 1};
@ -863,7 +867,7 @@ private:
bool gaussianBlur5Ocl(const UMat &src, int ksizeHalf, UMat &dst)
{
int height = src.rows / 5;
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 128, 1};
#else
size_t localsize[2] = { 256, 1};
@ -888,7 +892,7 @@ private:
}
bool polynomialExpansionOcl(const UMat &src, UMat &dst)
{
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 128, 1};
#else
size_t localsize[2] = { 256, 1};
@ -925,7 +929,7 @@ private:
bool boxFilter5Ocl(const UMat &src, int ksizeHalf, UMat &dst)
{
int height = src.rows / 5;
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 128, 1};
#else
size_t localsize[2] = { 256, 1};
@ -952,7 +956,7 @@ private:
bool updateFlowOcl(const UMat &M, UMat &flowx, UMat &flowy)
{
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 32, 4};
#else
size_t localsize[2] = { 32, 8};
@ -976,7 +980,7 @@ private:
}
bool updateMatricesOcl(const UMat &flowx, const UMat &flowy, const UMat &R0, const UMat &R1, UMat &M)
{
#ifdef ANDROID
#ifdef SMALL_LOCALSIZE
size_t localsize[2] = { 32, 4};
#else
size_t localsize[2] = { 32, 8};

8
samples/cpp/fback.cpp
View File

@ -37,7 +37,8 @@ int main(int, char**)
if( !cap.isOpened() )
return -1;
Mat prevgray, gray, flow, cflow, frame;
Mat flow, cflow, frame;
UMat gray, prevgray, uflow;
namedWindow("flow", 1);
for(;;)
@ -45,10 +46,11 @@ int main(int, char**)
cap >> frame;
cvtColor(frame, gray, COLOR_BGR2GRAY);
if( prevgray.data )
if( !prevgray.empty() )
{
calcOpticalFlowFarneback(prevgray, gray, flow, 0.5, 3, 15, 3, 5, 1.2, 0);
calcOpticalFlowFarneback(prevgray, gray, uflow, 0.5, 3, 15, 3, 5, 1.2, 0);
cvtColor(prevgray, cflow, COLOR_GRAY2BGR);
uflow.copyTo(flow);
drawOptFlowMap(flow, cflow, 16, 1.5, Scalar(0, 255, 0));
imshow("flow", cflow);
}