将一段视频进行对数极坐标变换后保存

最新推荐文章于 2024-07-21 17:14:42 发布

原创最新推荐文章于 2024-07-21 17:14:42 发布 · 499 阅读

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#codec #include #flv #null

本文介绍了一个使用OpenCV进行视频处理的示例程序，包括视频读取、对数极坐标变换及视频写入等功能。探讨了如何传递命令行参数、选择合适的编解码器并给出了常见编解码器选项。

#include "cv.h" #include "highgui.h" int main(int argc,char** argv){ CvCapture* capture; // if(argc==1){ // // capture=cvCaptureFromCAM(0); // if(!capture){ // return -1; // } // // } /* else{*/ capture=cvCaptureFromFile("**.avi"); if(!capture){ return -1; } /* }*/ CvSize size = cvSize((int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_WIDTH),(int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_HEIGHT)); double fps = cvGetCaptureProperty(capture,CV_CAP_PROP_FPS); CvVideoWriter* videoWrite=cvCreateVideoWriter("F://write.avi", CV_FOURCC('D','I','V','X'), fps, size ); IplImage* writeImage; IplImage* getImage; while((getImage = cvQueryFrame(capture))!=NULL){ writeImage=cvCreateImage(size,IPL_DEPTH_8U,3); cvLogPolar(getImage,writeImage,cvPoint2D32f((getImage->width)/2,(getImage->height)/2),40,CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS); cvWriteFrame(videoWrite,writeImage); } cvReleaseImage(&writeImage); cvReleaseImage(&getImage); cvReleaseCapture(&capture); cvReleaseVideoWriter(&videoWrite); return 0; }

问题：

1.怎样在VC下给程序传入参数？

2.函数cvLogPolar进行对数极坐标变换，其中第四参数M应如何求

3.cvCreateVideoWriter中第二个参数应怎样选取

CV_FOURCC('P','I','M','1') = MPEG-1 codec
CV_FOURCC('M','J','P','G') = motion-jpeg codec (does not work well)
CV_FOURCC('M', 'P', '4', '2') = MPEG-4.2 codec
CV_FOURCC('D', 'I', 'V', '3') = MPEG-4.3 codec
CV_FOURCC('D', 'I', 'V', 'X') = MPEG-4 codec
CV_FOURCC('U', '2', '6', '3') = H263 codec
CV_FOURCC('I', '2', '6', '3') = H263I codec
CV_FOURCC('F', 'L', 'V', '1') = FLV1 codec