记录一个基于C++实现的将视频流帧转换为图片
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/* avi2jpg 函数,将摄像头当前帧保存为jpg格式照片 */
void Video_to_image(CvCapture* capture)
{
//初始化一个视频文件捕捉器
//CvCapture* capture = cvCaptureFromAVI(filename);
//获取视频信息
cvQueryFrame(capture);
/*
int frameH = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);
int frameW = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);
int fps = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FPS);
int numFrames = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_COUNT);
//printf("tvideo height : %dntvideo width : %dntfps : %dntframe numbers : %dn", frameH, frameW, fps, numFrames);
*/
//定义和初始化变量
int i = 0;
IplImage* img = 0;
char image_name[13] = "1" ;
//读取和显示
while (1)
{
img = cvQueryFrame(capture); //获取一帧图片
char key = cvWaitKey(20);
sprintf (image_name, "%s%d%s" , "image" , ++i, ".jpg" ); //保存的图片名
cvSaveImage( image_name, img); //保存一帧图片
if (i == NUM_FRAME) break ;
}
}
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以上这篇C++实现视频流转换为图片方式就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/llp1992/article/details/43086139