小编smh*_*smh的帖子

这是我基于OpenCV的代码:

int main()
{
    clock_t start, stop;
    Mat img = imread("lena.jpg", IMREAD_GRAYSCALE);
    img.convertTo(img, CV_32F, 1.0);
    float *imgInP = (float *)img.data;    // get the input data point 
    Mat imgOut = Mat::zeros(Size(img.rows, img.cols), CV_32F);   // create output mat
    float *imgOutP = (float *)imgOutP.data;  // get the output data point

    // test several calling of opencv boxFilter
    start = clock();
    //blur(img, imgOut, Size(31, 31));
    boxFilter(img, imgOut, CV_32F, Size(31, 31));
    stop = clock();
    cout << "BoxFilter on OpenCV 1 : " << 1000.0 * …