unsigned long AAtime = 0, BBtime = 0; cuda::GpuMat gpuImg, gpuImg_out; Mat img, img_out, img_out2; img = imread("2mb.jpg"); gpuImg.upload(img); AAtime = getTickCount(); cuda::bitwise_not(gpuImg, gpuImg_out); Ptr< cv::cuda::filter > filter = cuda::createSobelFilter(img.type(), img.type(), 1, 0); filter->apply(gpuImg_out, gpuImg_out); BBtime = getTickCount(); gpuImg_out.download(img_out); printf("gpu : %.2lf second \n", (BBtime - AAtime) / getTickFrequency()); AAtime = getTickCount(); bitwise_not(img, img_out2); Sobel(img_out2, img_out2, img_out2.depth(), 1, 0); BBtime = getTickCount(); printf("cpu : %.2lf second \n", (BBtime - AAtime) / getTickFrequency()); imshow("cpu_img", img_out); imshow("cpu_img", img_out2); waitKey(0);
12/16/2016
Gpu Mat, Cpu Mat example 2
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