opencv/modules/ocl/test/test_columnsum.cpp

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//	   Chunpeng Zhang chunpeng@multicorewareinc.com
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#include "precomp.hpp"
#include <iomanip>

///////////////////////////////////////////////////////////////////////////////
/// ColumnSum

#ifdef HAVE_OPENCL

////////////////////////////////////////////////////////////////////////
// ColumnSum

PARAM_TEST_CASE(ColumnSum, cv::Size, bool )
{
    cv::Size size;
    cv::Mat src;
	bool useRoi;
	std::vector<cv::ocl::Info> oclinfo;

    virtual void SetUp()
    {
        size = GET_PARAM(0);
		useRoi = GET_PARAM(1);
        int devnums = getDevice(oclinfo, OPENCV_DEFAULT_OPENCL_DEVICE);
        CV_Assert(devnums > 0);
    }
};

TEST_P(ColumnSum, Accuracy)
{
    cv::Mat src = randomMat(size, CV_32FC1);
	//cv::Mat src(size,CV_32FC1);

	//cv::ocl::oclMat d_dst = ::createMat(size,src.type(),useRoi);
	cv::ocl::oclMat d_dst = loadMat(src,useRoi);

    cv::ocl::columnSum(loadMat(src,useRoi),d_dst);

    cv::Mat dst(d_dst);

    for (int j = 0; j < src.cols; ++j)
    {
        float gold = src.at<float>(0, j);
        float res = dst.at<float>(0, j);
        ASSERT_NEAR(res, gold, 1e-5);
    }

    for (int i = 1; i < src.rows; ++i)
    {
        for (int j = 0; j < src.cols; ++j)
        {
            float gold = src.at<float>(i, j) += src.at<float>(i - 1, j);
            float res = dst.at<float>(i, j);
            ASSERT_NEAR(res, gold, 1e-5);
        }
    }
}

INSTANTIATE_TEST_CASE_P(GPU_ImgProc, ColumnSum, testing::Combine(
						DIFFERENT_SIZES,testing::Values(Inverse(false),Inverse(true))));


#endif