OpenCV/opencv_contrib/modules/fuzzy/test/test_image.cpp

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#include "test_precomp.hpp"

namespace opencv_test { namespace {

TEST(fuzzy_image, inpainting)
{
    string folder = string(cvtest::TS::ptr()->get_data_path()) + "fuzzy/";
    Mat orig = imread(folder + "orig.png");
    Mat exp1 = imread(folder + "exp1.png");
    Mat exp2 = imread(folder + "exp2.png");
    Mat exp3 = imread(folder + "exp3.png");
    Mat mask1 = imread(folder + "mask1.png", IMREAD_GRAYSCALE);
    Mat mask2 = imread(folder + "mask2.png", IMREAD_GRAYSCALE);

    EXPECT_TRUE(!orig.empty() && !exp1.empty() && !exp2.empty() && !exp3.empty() && !mask1.empty() && !mask2.empty());

    Mat res1, res2, res3;
    ft::inpaint(orig, mask1, res1, 2, ft::LINEAR, ft::ONE_STEP);
    ft::inpaint(orig, mask2, res2, 2, ft::LINEAR, ft::MULTI_STEP);
    ft::inpaint(orig, mask2, res3, 2, ft::LINEAR, ft::ITERATIVE);

    res1.convertTo(res1, CV_8UC3);
    res2.convertTo(res2, CV_8UC3);
    res3.convertTo(res3, CV_8UC3);

    double n1 = cvtest::norm(exp1, res1, NORM_INF);
    double n2 = cvtest::norm(exp2, res2, NORM_INF);
    double n3 = cvtest::norm(exp3, res3, NORM_INF);

    EXPECT_LE(n1, 1);
    EXPECT_LE(n2, 1);
    EXPECT_LE(n3, 1);
}

TEST(fuzzy_image, filtering)
{
    string folder = string(cvtest::TS::ptr()->get_data_path()) + "fuzzy/";
    Mat orig = imread(folder + "orig.png");
    Mat exp4 = imread(folder + "exp4.png");

    EXPECT_TRUE(!orig.empty() && !exp4.empty());

    Mat kernel;
    ft::createKernel(ft::LINEAR, 20, kernel, 3);

    Mat res4;
    ft::filter(orig, kernel, res4);

    res4.convertTo(res4, CV_8UC3);

    double n1 = cvtest::norm(exp4, res4, NORM_INF);

    EXPECT_LE(n1, 1);
}

TEST(fuzzy_image, kernel)
{
    Mat kernel1;
    ft::createKernel(ft::LINEAR, 2, kernel1, 1);

    Mat vectorA = (Mat_<float>(1, 5) << 0, 0.5, 1, 0.5, 0);
    Mat vectorB = (Mat_<float>(5, 1) << 0, 0.5, 1, 0.5, 0);

    Mat kernel2;
    ft::createKernel(vectorA, vectorB, kernel2, 1);

    double diff = cvtest::norm(kernel1, kernel2, NORM_INF);

    EXPECT_DOUBLE_EQ(diff, 0);
}

}} // namespace