opencv/modules/ocl/perf/perf_haar.cpp

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

PERFTEST(Haar)
{
    Mat img = imread(abspath("basketball1.png"), IMREAD_GRAYSCALE);

    if (img.empty())
    {
        throw runtime_error("can't open basketball1.png");
    }

    CascadeClassifier faceCascadeCPU;

    if (!faceCascadeCPU.load(abspath("haarcascade_frontalface_alt.xml")))
    {
        throw runtime_error("can't load haarcascade_frontalface_alt.xml");
    }

    vector<Rect> faces;

    SUBTEST << img.cols << "x" << img.rows << "; scale image";
    CPU_ON;
    faceCascadeCPU.detectMultiScale(img, faces,
                                    1.1, 2, 0 | CASCADE_SCALE_IMAGE, Size(30, 30));
    CPU_OFF;


    vector<Rect> oclfaces;
    ocl::OclCascadeClassifier faceCascade;

    if (!faceCascade.load(abspath("haarcascade_frontalface_alt.xml")))
    {
        throw runtime_error("can't load haarcascade_frontalface_alt.xml");
    }

    ocl::oclMat d_img(img);

    WARMUP_ON;
    faceCascade.detectMultiScale(d_img, oclfaces,
                                 1.1, 2, 0 | CASCADE_SCALE_IMAGE, Size(30, 30));
    WARMUP_OFF;

    if(faces.size() == oclfaces.size())
        TestSystem::instance().setAccurate(1, 0);
    else
        TestSystem::instance().setAccurate(0, abs((int)faces.size() - (int)oclfaces.size()));

    faces.clear();

    GPU_ON;
    faceCascade.detectMultiScale(d_img, oclfaces,
                                 1.1, 2, 0 | CASCADE_SCALE_IMAGE, Size(30, 30));
    GPU_OFF;

    GPU_FULL_ON;
    d_img.upload(img);
    faceCascade.detectMultiScale(d_img, oclfaces,
                                 1.1, 2, 0 | CASCADE_SCALE_IMAGE, Size(30, 30));
    GPU_FULL_OFF;
}