大致思路：獲取攝像頭畫面後，通過在影象上迴圈疊加一組背景透明的PNG圖片，在影象上產生類似GIF的動圖效果。

#include<opencv2/opencv.hpp>
using namespace cv;

//PNG透明圖片疊加到視訊
int main()
{
    Mat frame;
    VideoCapture capture;
    capture.open(0);
    if(!capture.isOpened())
    {
        printf("can not open the camear......\n");
        return -1
 
;
    }
    namedWindow("mask", CV_WINDOW_AUTOSIZE);
    namedWindow("output", CV_WINDOW_AUTOSIZE);
    while (capture.read(frame))
    {
        //翻轉攝像頭影象
        flip(frame, frame, 1);
        Mat image = frame;      
        for (int i = 1; i < 11; i++)
        {
            char filename[100];
            sprintf
 
(filename,"E:/image/image/00/%d.PNG",i);
            //灰度圖
            Mat grayPng = imread(filename,0);           
            threshold(grayPng,grayPng,180,255,CV_THRESH_BINARY);
            //掩模反色
            Mat mask = 255 - grayPng; 
            imshow("mask",mask);
            //讀取背景透明的PNG影象
            Mat png = imread(filename);
            Mat imROI;
            imROI = image(Rect(200
 
,20,png.cols,png.rows));
            png.copyTo(imROI,mask);
            imshow("output",image);
            //替換新圖
            image = frame;
            waitKey(10);
        }

    }
    waitKey();

    return 0;
}

匯入的PNG圖片為：