學習OPENCV的第一個例子

#include <highgui.h> #include <cassert> #include <iostream> #include <Windows.h> using namespace std; void OnTrackbarSlide(int pos);int g_slider_position = 0; CvCapture *g_capture = NULL; int main(int argc , char ** argv) {assert(argc == 2);cvNamedWindow("Example2",CV_WINDOW_AUTOSIZE);g_capture = cvCreateFileCapture(argv[1]);assert(g_capture != NULL);int frames = (int) cvGetCaptureProperty(g_capture,CV_CAP_PROP_FRAME_COUNT);int fps = (int) cvGetCaptureProperty(g_capture,CV_CAP_PROP_FPS);const int step_time = 1000 / fps ;if(frames != 0){cvCreateTrackbar("Position","Example2",&g_slider_position,frames,OnTrackbarSlide);}IplImage *frame ;while(1){frame = cvQueryFrame(g_capture);if(frame == NULL)break;cvShowImage("Example2",frame);if(++g_slider_position % fps == 0)cvSetTrackbarPos("Position","Example2",++g_slider_position);char c = cvWaitKey(step_time);if(c == 27)break;}cvReleaseCapture(&g_capture);cvDestroyWindow("Example2");}void OnTrackbarSlide(int pos) {cvSetCaptureProperty(g_capture,CV_CAP_PROP_POS_FRAMES,pos); } OnTrackbarSlide(int pos)為滑塊的回調函數.

別的函數可以忘文生義

運行之前請安裝好opencv庫,再在依賴庫中設置好比如我用的opencv 2.1?

?cvcore210d.lib cv210d.lib highgui210d.lib

總結

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