opencv/modules/ocl/perf/perf_hog.cpp

/*M///////////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2010-2012, Multicoreware, Inc., all rights reserved.
// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
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// @Authors
//    Fangfang Bai, fangfang@multicorewareinc.com
//    Jin Ma,       jin@multicorewareinc.com
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#include "perf_precomp.hpp"

///////////// HOG////////////////////////

PERFTEST(HOG)
{
    Mat src = imread(abspath("road.png"), cv::IMREAD_GRAYSCALE);

    if (src.empty())
    {
        throw runtime_error("can't open road.png");
    }

    cv::HOGDescriptor hog;
    hog.setSVMDetector(hog.getDefaultPeopleDetector());
    std::vector<cv::Rect> found_locations;
    std::vector<cv::Rect> d_found_locations;

    SUBTEST << src.cols << 'x' << src.rows << "; road.png";

    hog.detectMultiScale(src, found_locations);

    CPU_ON;
    hog.detectMultiScale(src, found_locations);
    CPU_OFF;

    cv::ocl::HOGDescriptor ocl_hog;
    ocl_hog.setSVMDetector(ocl_hog.getDefaultPeopleDetector());
    ocl::oclMat d_src;
    d_src.upload(src);

    WARMUP_ON;
    ocl_hog.detectMultiScale(d_src, d_found_locations);
    WARMUP_OFF;
    
    if(d_found_locations.size() == found_locations.size())
        TestSystem::instance().setAccurate(1, 0);
    else
        TestSystem::instance().setAccurate(0, abs((int)found_locations.size() - (int)d_found_locations.size()));

    GPU_ON;
    ocl_hog.detectMultiScale(d_src, found_locations);
    GPU_OFF;

    GPU_FULL_ON;
    d_src.upload(src);
    ocl_hog.detectMultiScale(d_src, found_locations);
    GPU_FULL_OFF;
}