generic-library/opencv
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revamped

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This commit is contained in:
Gary Bradski 2010-12-04 08:29:51 +00:00
parent 8dd8583596
commit 05f45a3b95
1 changed files with 15 additions and 3 deletions
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18
samples/cpp/fback.cpp
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@ -2,8 +2,20 @@
#include <opencv2/imgproc/imgproc.hpp> #include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp> #include <opencv2/highgui/highgui.hpp>
using namespace cv; #include <iostream>
using namespace cv;
using namespace std;
void help()
{
cout <<
"\nThis program demonstrates dense, Farnback, optical flow\n"
"Mainly the function: calcOpticalFlowFarneback()\n"
"Call:\n"
"./fback\n"
"This reads from video camera 0\n" << endl;
}
void drawOptFlowMap(const Mat& flow, Mat& cflowmap, int step, void drawOptFlowMap(const Mat& flow, Mat& cflowmap, int step,
double, const Scalar& color) double, const Scalar& color)
{ {
@ -20,7 +32,7 @@ void drawOptFlowMap(const Mat& flow, Mat& cflowmap, int step,
int main(int, char**) int main(int, char**)
{ {
VideoCapture cap(0); VideoCapture cap(0);
help();
if( !cap.isOpened() ) if( !cap.isOpened() )
return -1; return -1;
@ -34,7 +46,7 @@ int main(int, char**)
if( prevgray.data ) if( prevgray.data )
{ {
calcOpticalFlowFarneback(prevgray, gray, flow, 0.5, 3, 15, 3, 5, 1.2, 0); (prevgray, gray, flow, 0.5, 3, 15, 3, 5, 1.2, 0);
cvtColor(prevgray, cflow, CV_GRAY2BGR); cvtColor(prevgray, cflow, CV_GRAY2BGR);
drawOptFlowMap(flow, cflow, 16, 1.5, CV_RGB(0, 255, 0)); drawOptFlowMap(flow, cflow, 16, 1.5, CV_RGB(0, 255, 0));
imshow("flow", cflow); imshow("flow", cflow);