opencv图片转幻灯片视频

 /*g++ *.cpp `pkg-config --cflags --libs opencv` -std=c++11*/

 #include <opencv2/opencv.hpp>
 using namespace std;
 using namespace cv;
 #define NUM_FRAME 300
 #define SIZE 7  

 char path[];//输入文件路径  

 //将图片序列转换为视频
 void getVideo()
 {
     int i = ;
     IplImage* img = ;//读入图像
     IplImage* outimg = ;//修改图像尺寸
     char image_name[];//图像名字
     char videoname[];
     strcpy(videoname, path);
     strcat(videoname, "//1.avi");  

     //初始化视频编写器，参数根据实际视频文件修改
     CvVideoWriter *writer = ;
     //从文件读入视频
     CvCapture* capture = cvCaptureFromAVI(videoname);
     //读取和显示
     int isColor = ;
     IplImage* frameimg;//从视频中提取的帧图像
     int fps = (int)cvGetCaptureProperty(capture, CV_CAP_PROP_FPS);//视频的fps
     int frameH = (int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);//视频的高度
     int frameW = (int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);//视频的宽度
     writer = cvCreateVideoWriter("..//output//2.avi",-, fps, cvSize(frameW, frameH), isColor);//创建视频写入
     printf("\tvideo height : %d\n\tvideo width : %d\n\tfps : %d\n", frameH, frameW, fps);
     //创建窗口
     cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);
     //读入图片，并制作幻灯片
     while (i<SIZE)
     {
         CvSize Out_Img_size;//图片的大小
         Out_Img_size.width = frameW;//使读入图片的大小与视频尺寸相同
         Out_Img_size.height = frameH;
         sprintf(image_name, "%d%s", ++i, ".jpg");//得到图片名字
         char imgname[];
         strcpy(imgname, path);
         strcat(imgname, "//");
         strcat(imgname,image_name);//加上路径
         img = cvLoadImage(imgname);//打开图片
         outimg = cvCreateImage(Out_Img_size, img->depth, img->nChannels);//创建一张与视频帧大小相同的图像
         cvResize(img, outimg, CV_INTER_LINEAR);//让打开的图像重写为指定大小
         if (!img)
         {
             printf("Could not load image file...\n");
             exit();
         }
         //设置字体
         CvFont font;
         cvInitFont(&font, CV_FONT_VECTOR0, 0.5f, 0.5f, , , );
         //在图像中显示文本字符串
         cvPutText(outimg, "StudentID", cvPoint(frameW - , frameH - ), &font, CV_RGB(, , ));
         cvPutText(outimg, "name", cvPoint(frameW - , frameH - ), &font, CV_RGB(, , ));
         char key = cvWaitKey();//等待
         //将图像写入视频，重复25次是为了使之放映速度变慢
         for (int j = ; j < ; j++) {
             cvShowImage("mainWin", outimg);
             cvWriteFrame(writer, outimg);
         }
     }
     i = ;
     while ()
     {
         frameimg = cvQueryFrame(capture); //获取一帧图片
         if (!frameimg)break;//读到尽头，退出
         //设置字体
         CvFont font;
         cvInitFont(&font, CV_FONT_VECTOR0, 0.5f,0.5f , , , );
         //在图像中显示文本字符串
         cvPutText(frameimg, "StudentID", cvPoint(frameW - , frameH - ), &font, CV_RGB(, , ));
         cvPutText(frameimg, "name", cvPoint(frameW - , frameH - ), &font, CV_RGB(, , ));
         cvShowImage("mainWin", frameimg);
         char key = cvWaitKey();
         //将视频帧写入视频
         cvWriteFrame(writer, frameimg);
     }
     cvReleaseVideoWriter(&writer);
     cvDestroyWindow("mainWin");
 }  

 int main(int argc, char** argv)
 {
     strcpy(path, argv[]);
     getVideo();
     waitKey();
     system("pause");
     return ;
 }