opencv/modules/ocl/perf/perf_calib3d.cpp

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// @Authors
//    Fangfang Bai, fangfang@multicorewareinc.com
//    Jin Ma,       jin@multicorewareinc.com
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#include "perf_precomp.hpp"
///////////// StereoMatchBM ////////////////////////
PERFTEST(StereoMatchBM)
{
    Mat left_image = imread(abspath("aloeL.jpg"), cv::IMREAD_GRAYSCALE);
    Mat right_image = imread(abspath("aloeR.jpg"), cv::IMREAD_GRAYSCALE);
    Mat disp,dst;
    ocl::oclMat d_left, d_right,d_disp;
    int n_disp= 128;
    int winSize =19;

    SUBTEST << left_image.cols << 'x' << left_image.rows << "; aloeL.jpg ;"<< right_image.cols << 'x' << right_image.rows << "; aloeR.jpg ";

	Ptr<StereoBM> bm = createStereoBM(n_disp, winSize);
	bm->compute(left_image, right_image, dst);

	CPU_ON;
	bm->compute(left_image, right_image, dst);
	CPU_OFF;

    d_left.upload(left_image);
    d_right.upload(right_image);

    ocl::StereoBM_OCL d_bm(0, n_disp, winSize);

    WARMUP_ON;
    d_bm(d_left, d_right, d_disp);
    WARMUP_OFF;

    cv::Mat ocl_mat;
    d_disp.download(ocl_mat);
    ocl_mat.convertTo(ocl_mat, dst.type());

    GPU_ON;
    d_bm(d_left, d_right, d_disp);
    GPU_OFF;

    GPU_FULL_ON;
    d_left.upload(left_image);
    d_right.upload(right_image);
    d_bm(d_left, d_right, d_disp);
    d_disp.download(disp);
    GPU_FULL_OFF;

    TestSystem::instance().setAccurate(-1, 0.);
}