Function main

example/detect-camera.cpp:47–147

using namespace cv;

int main(int argc, char* argv[])
{
    if(argc != 2)
    {
        printf("Usage: %s <camera index>\n", argv[0]);
        return -1;
    }

	int * pResults = NULL; 
    //pBuffer is used in the detection functions.
    //If you call functions in multiple threads, please create one buffer for each thread!
    unsigned char * pBuffer = (unsigned char *)malloc(DETECT_BUFFER_SIZE);
    if(!pBuffer)
    {
        fprintf(stderr, "Can not alloc buffer.\n");
        return -1;
    }


    VideoCapture cap;
    Mat im;
    
    if( isdigit(argv[1][0]))
    {
        cap.open(argv[1][0]-'0');
        if(! cap.isOpened())
        {
            cerr << "Cannot open the camera." << endl;
            return 0;
        }
    }

    if( cap.isOpened())
    {
        while(true)
        {
            cap >> im;
            //cout << "Image size: " << im.rows << "X" << im.cols << endl;
            Mat image = im.clone();

            ///////////////////////////////////////////
            // CNN face detection 
            // Best detection rate
            //////////////////////////////////////////
            //!!! The input image must be a BGR one (three-channel) instead of RGB
            //!!! DO NOT RELEASE pResults !!!
            TickMeter cvtm;
            cvtm.start();

            pResults = facedetect_cnn(pBuffer, (unsigned char*)(image.ptr(0)), image.cols, image.rows, (int)image.step);
            
            cvtm.stop();    
            printf("time = %gms\n", cvtm.getTimeMilli());
            
            printf("%d faces detected.\n", (pResults ? *pResults : 0));
            Mat result_image = image.clone();
            //print the detection results
            for(int i = 0; i < (pResults ? *pResults : 0); i++)