opencv/modules/imgproc/perf/perf_resize.cpp

// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#include "perf_precomp.hpp"

namespace opencv_test {

typedef tuple<MatType, Size, Size> MatInfo_Size_Size_t;
typedef TestBaseWithParam<MatInfo_Size_Size_t> MatInfo_Size_Size;

PERF_TEST_P(MatInfo_Size_Size, resizeUpLinear,
            testing::Values(
                MatInfo_Size_Size_t(CV_8UC1, szVGA, szqHD),
                MatInfo_Size_Size_t(CV_8UC2, szVGA, szqHD),
                MatInfo_Size_Size_t(CV_8UC3, szVGA, szqHD),
                MatInfo_Size_Size_t(CV_8UC4, szVGA, szqHD),
                MatInfo_Size_Size_t(CV_8UC1, szVGA, sz720p),
                MatInfo_Size_Size_t(CV_8UC2, szVGA, sz720p),
                MatInfo_Size_Size_t(CV_8UC3, szVGA, sz720p),
                MatInfo_Size_Size_t(CV_8UC4, szVGA, sz720p)
                )
            )
{
    int matType = get<0>(GetParam());
    Size from = get<1>(GetParam());
    Size to = get<2>(GetParam());

    cv::Mat src(from, matType), dst(to, matType);
    cvtest::fillGradient(src);
    declare.in(src).out(dst);

    TEST_CYCLE_MULTIRUN(10) resize(src, dst, to, 0, 0, INTER_LINEAR_EXACT);

#ifdef __ANDROID__
    SANITY_CHECK(dst, 5);
#else
    SANITY_CHECK(dst, 1 + 1e-6);
#endif
}

PERF_TEST_P(MatInfo_Size_Size, resizeDownLinear,
            testing::Values(
                MatInfo_Size_Size_t(CV_8UC1, szVGA, szQVGA),
                MatInfo_Size_Size_t(CV_8UC2, szVGA, szQVGA),
                MatInfo_Size_Size_t(CV_8UC3, szVGA, szQVGA),
                MatInfo_Size_Size_t(CV_8UC4, szVGA, szQVGA),
                MatInfo_Size_Size_t(CV_8UC1, szqHD, szVGA),
                MatInfo_Size_Size_t(CV_8UC2, szqHD, szVGA),
                MatInfo_Size_Size_t(CV_8UC3, szqHD, szVGA),
                MatInfo_Size_Size_t(CV_8UC4, szqHD, szVGA),
                MatInfo_Size_Size_t(CV_8UC1, sz720p, Size(120 * sz720p.width / sz720p.height, 120)),//face detection min_face_size = 20%
                MatInfo_Size_Size_t(CV_8UC2, sz720p, Size(120 * sz720p.width / sz720p.height, 120)),//face detection min_face_size = 20%
                MatInfo_Size_Size_t(CV_8UC3, sz720p, Size(120 * sz720p.width / sz720p.height, 120)),//face detection min_face_size = 20%
                MatInfo_Size_Size_t(CV_8UC4, sz720p, Size(120 * sz720p.width / sz720p.height, 120)),//face detection min_face_size = 20%
                MatInfo_Size_Size_t(CV_8UC1, sz720p, szVGA),
                MatInfo_Size_Size_t(CV_8UC2, sz720p, szVGA),
                MatInfo_Size_Size_t(CV_8UC3, sz720p, szVGA),
                MatInfo_Size_Size_t(CV_8UC4, sz720p, szVGA),
                MatInfo_Size_Size_t(CV_8UC1, sz720p, szQVGA),
                MatInfo_Size_Size_t(CV_8UC2, sz720p, szQVGA),
                MatInfo_Size_Size_t(CV_8UC3, sz720p, szQVGA),
                MatInfo_Size_Size_t(CV_8UC4, sz720p, szQVGA)
                )
            )
{
    int matType = get<0>(GetParam());
    Size from = get<1>(GetParam());
    Size to = get<2>(GetParam());

    cv::Mat src(from, matType), dst(to, matType);
    cvtest::fillGradient(src);
    declare.in(src).out(dst);

    TEST_CYCLE_MULTIRUN(10) resize(src, dst, to, 0, 0, INTER_LINEAR_EXACT);

#ifdef __ANDROID__
    SANITY_CHECK(dst, 5);
#else
    SANITY_CHECK(dst, 1 + 1e-6);
#endif
}


typedef tuple<MatType, Size, int> MatInfo_Size_Scale_t;
typedef TestBaseWithParam<MatInfo_Size_Scale_t> MatInfo_Size_Scale;

PERF_TEST_P(MatInfo_Size_Scale, ResizeAreaFast,
            testing::Combine(
                testing::Values(CV_8UC1, CV_8UC3, CV_8UC4, CV_16UC1, CV_16UC3, CV_16UC4),
                testing::Values(szVGA, szqHD, sz720p, sz1080p),
                testing::Values(2)
                )
            )
{
    int matType = get<0>(GetParam());
    Size from = get<1>(GetParam());
    int scale = get<2>(GetParam());

    from.width = (from.width/scale)*scale;
    from.height = (from.height/scale)*scale;

    cv::Mat src(from, matType);
    cv::Mat dst(from.height / scale, from.width / scale, matType);

    declare.in(src, WARMUP_RNG).out(dst);

    int runs = 15;
    TEST_CYCLE_MULTIRUN(runs) resize(src, dst, dst.size(), 0, 0, INTER_AREA);

    //difference equal to 1 is allowed because of different possible rounding modes: round-to-nearest vs bankers' rounding
    SANITY_CHECK(dst, 1);
}


typedef TestBaseWithParam<tuple<MatType, Size, double> > MatInfo_Size_Scale_Area;

PERF_TEST_P(MatInfo_Size_Scale_Area, ResizeArea,
            testing::Combine(
                testing::Values(CV_8UC1, CV_8UC4),
                testing::Values(szVGA, szqHD, sz720p),
                testing::Values(2.4, 3.4, 1.3)
                )
            )
{
    int matType = get<0>(GetParam());
    Size from = get<1>(GetParam());
    double scale = get<2>(GetParam());

    cv::Mat src(from, matType);

    Size to(cvRound(from.width * scale), cvRound(from.height * scale));
    cv::Mat dst(to, matType);

    declare.in(src, WARMUP_RNG).out(dst);
    declare.time(100);

    TEST_CYCLE() resize(src, dst, dst.size(), 0, 0, INTER_AREA);

    //difference equal to 1 is allowed because of different possible rounding modes: round-to-nearest vs bankers' rounding
    SANITY_CHECK(dst, 1);
}

typedef MatInfo_Size_Scale_Area MatInfo_Size_Scale_NN;

PERF_TEST_P(MatInfo_Size_Scale_NN, ResizeNN,
    testing::Combine(
        testing::Values(CV_8UC1, CV_8UC2, CV_8UC4),
        testing::Values(szVGA, szqHD, sz720p, sz1080p, sz2160p),
        testing::Values(2.4, 3.4, 1.3)
    )
)
{
    int matType = get<0>(GetParam());
    Size from = get<1>(GetParam());
    double scale = get<2>(GetParam());

    cv::Mat src(from, matType);

    Size to(cvRound(from.width * scale), cvRound(from.height * scale));
    cv::Mat dst(to, matType);

    declare.in(src, WARMUP_RNG).out(dst);
    declare.time(100);

    TEST_CYCLE() resize(src, dst, dst.size(), 0, 0, INTER_NEAREST);

    EXPECT_GT(countNonZero(dst.reshape(1)), 0);
    SANITY_CHECK_NOTHING();
}

} // namespace