// 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 "test_precomp.hpp" namespace opencv_test { namespace { #if defined(HAVE_PNG) || defined(HAVE_SPNG) TEST(Imgcodecs_Png, imread_passing_mat) { const string root = cvtest::TS::ptr()->get_data_path(); const string imgName = root + "../cv/shared/lena.png"; Mat ref = imread(imgName); Mat img(ref.size(), ref.type()); void* ptr = img.data; imread(imgName, img); EXPECT_EQ(cv::norm(ref, img, NORM_INF), 0); EXPECT_EQ(img.data, ptr); } TEST(Imgcodecs_Png, write_big) { const string root = cvtest::TS::ptr()->get_data_path(); const string filename = root + "readwrite/read.png"; const string dst_file = cv::tempfile(".png"); Mat img; ASSERT_NO_THROW(img = imread(filename)); ASSERT_FALSE(img.empty()); EXPECT_EQ(13043, img.cols); EXPECT_EQ(13917, img.rows); ASSERT_NO_THROW(imwrite(dst_file, img)); EXPECT_EQ(0, remove(dst_file.c_str())); } TEST(Imgcodecs_Png, encode) { vector buff; Mat img_gt = Mat::zeros(1000, 1000, CV_8U); vector param; param.push_back(IMWRITE_PNG_COMPRESSION); param.push_back(3); //default(3) 0-9. EXPECT_NO_THROW(imencode(".png", img_gt, buff, param)); Mat img; EXPECT_NO_THROW(img = imdecode(buff, IMREAD_ANYDEPTH)); // hang EXPECT_FALSE(img.empty()); EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), img, img_gt); } TEST(Imgcodecs_Png, regression_ImreadVSCvtColor) { const string root = cvtest::TS::ptr()->get_data_path(); const string imgName = root + "../cv/shared/lena.png"; Mat original_image = imread(imgName); Mat gray_by_codec = imread(imgName, IMREAD_GRAYSCALE); Mat gray_by_cvt; cvtColor(original_image, gray_by_cvt, COLOR_BGR2GRAY); Mat diff; absdiff(gray_by_codec, gray_by_cvt, diff); EXPECT_LT(cvtest::mean(diff)[0], 1.); EXPECT_PRED_FORMAT2(cvtest::MatComparator(10, 0), gray_by_codec, gray_by_cvt); } // Test OpenCV issue 3075 is solved TEST(Imgcodecs_Png, read_color_palette_with_alpha) { const string root = cvtest::TS::ptr()->get_data_path(); Mat img; // First Test : Read PNG with alpha, imread flag -1 img = imread(root + "readwrite/color_palette_alpha.png", IMREAD_UNCHANGED); ASSERT_FALSE(img.empty()); ASSERT_TRUE(img.channels() == 4); // pixel is red in BGRA EXPECT_EQ(img.at(0, 0), Vec4b(0, 0, 255, 255)); EXPECT_EQ(img.at(0, 1), Vec4b(0, 0, 255, 255)); // Second Test : Read PNG without alpha, imread flag -1 img = imread(root + "readwrite/color_palette_no_alpha.png", IMREAD_UNCHANGED); ASSERT_FALSE(img.empty()); ASSERT_TRUE(img.channels() == 3); // pixel is red in BGR EXPECT_EQ(img.at(0, 0), Vec3b(0, 0, 255)); EXPECT_EQ(img.at(0, 1), Vec3b(0, 0, 255)); // Third Test : Read PNG with alpha, imread flag 1 img = imread(root + "readwrite/color_palette_alpha.png", IMREAD_COLOR); ASSERT_FALSE(img.empty()); ASSERT_TRUE(img.channels() == 3); // pixel is red in BGR EXPECT_EQ(img.at(0, 0), Vec3b(0, 0, 255)); EXPECT_EQ(img.at(0, 1), Vec3b(0, 0, 255)); // Fourth Test : Read PNG without alpha, imread flag 1 img = imread(root + "readwrite/color_palette_no_alpha.png", IMREAD_COLOR); ASSERT_FALSE(img.empty()); ASSERT_TRUE(img.channels() == 3); // pixel is red in BGR EXPECT_EQ(img.at(0, 0), Vec3b(0, 0, 255)); EXPECT_EQ(img.at(0, 1), Vec3b(0, 0, 255)); } /** * Test for check whether reading exif orientation tag was processed successfully or not * The test info is the set of 8 images named testExifRotate_{1 to 8}.png * The test image is the square 10x10 points divided by four sub-squares: * (R corresponds to Red, G to Green, B to Blue, W to white) * --------- --------- * | R | G | | G | R | * |-------| - (tag 1) |-------| - (tag 2) * | B | W | | W | B | * --------- --------- * * --------- --------- * | W | B | | B | W | * |-------| - (tag 3) |-------| - (tag 4) * | G | R | | R | G | * --------- --------- * * --------- --------- * | R | B | | G | W | * |-------| - (tag 5) |-------| - (tag 6) * | G | W | | R | B | * --------- --------- * * --------- --------- * | W | G | | B | R | * |-------| - (tag 7) |-------| - (tag 8) * | B | R | | W | G | * --------- --------- * * * Every image contains exif field with orientation tag (0x112) * After reading each image and applying the orientation tag, * the resulting image should be: * --------- * | R | G | * |-------| * | B | W | * --------- * */ typedef testing::TestWithParam Imgcodecs_PNG_Exif; // Solution to issue 16579: PNG read doesn't support Exif orientation data #ifdef OPENCV_IMGCODECS_PNG_WITH_EXIF TEST_P(Imgcodecs_PNG_Exif, exif_orientation) #else TEST_P(Imgcodecs_PNG_Exif, DISABLED_exif_orientation) #endif { const string root = cvtest::TS::ptr()->get_data_path(); const string filename = root + GetParam(); const int colorThresholdHigh = 250; const int colorThresholdLow = 5; Mat m_img = imread(filename); ASSERT_FALSE(m_img.empty()); Vec3b vec; //Checking the first quadrant (with supposed red) vec = m_img.at(2, 2); //some point inside the square EXPECT_LE(vec.val[0], colorThresholdLow); EXPECT_LE(vec.val[1], colorThresholdLow); EXPECT_GE(vec.val[2], colorThresholdHigh); //Checking the second quadrant (with supposed green) vec = m_img.at(2, 7); //some point inside the square EXPECT_LE(vec.val[0], colorThresholdLow); EXPECT_GE(vec.val[1], colorThresholdHigh); EXPECT_LE(vec.val[2], colorThresholdLow); //Checking the third quadrant (with supposed blue) vec = m_img.at(7, 2); //some point inside the square EXPECT_GE(vec.val[0], colorThresholdHigh); EXPECT_LE(vec.val[1], colorThresholdLow); EXPECT_LE(vec.val[2], colorThresholdLow); } const string exif_files[] = { "readwrite/testExifOrientation_1.png", "readwrite/testExifOrientation_2.png", "readwrite/testExifOrientation_3.png", "readwrite/testExifOrientation_4.png", "readwrite/testExifOrientation_5.png", "readwrite/testExifOrientation_6.png", "readwrite/testExifOrientation_7.png", "readwrite/testExifOrientation_8.png" }; INSTANTIATE_TEST_CASE_P(ExifFiles, Imgcodecs_PNG_Exif, testing::ValuesIn(exif_files)); typedef testing::TestWithParam Imgcodecs_Png_PngSuite; TEST_P(Imgcodecs_Png_PngSuite, decode) { const string root = cvtest::TS::ptr()->get_data_path(); const string filename = root + "pngsuite/" + GetParam() + ".png"; const string xml_filename = root + "pngsuite/" + GetParam() + ".xml"; FileStorage fs(xml_filename, FileStorage::READ); EXPECT_TRUE(fs.isOpened()); Mat src = imread(filename, IMREAD_UNCHANGED); Mat gt; fs.getFirstTopLevelNode() >> gt; EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), src, gt); } const string pngsuite_files[] = { "basi0g01", "basi0g02", "basi0g04", "basi0g08", "basi0g16", "basi2c08", "basi2c16", "basi3p01", "basi3p02", "basi3p04", "basi3p08", "basi4a08", "basi4a16", "basi6a08", "basi6a16", "basn0g01", "basn0g02", "basn0g04", "basn0g08", "basn0g16", "basn2c08", "basn2c16", "basn3p01", "basn3p02", "basn3p04", "basn3p08", "basn4a08", "basn4a16", "basn6a08", "basn6a16", "bgai4a08", "bgai4a16", "bgan6a08", "bgan6a16", "bgbn4a08", "bggn4a16", "bgwn6a08", "bgyn6a16", "ccwn2c08", "ccwn3p08", "cdfn2c08", "cdhn2c08", "cdsn2c08", "cdun2c08", "ch1n3p04", "ch2n3p08", "cm0n0g04", "cm7n0g04", "cm9n0g04", "cs3n2c16", "cs3n3p08", "cs5n2c08", "cs5n3p08", "cs8n2c08", "cs8n3p08", "ct0n0g04", "ct1n0g04", "cten0g04", "ctfn0g04", "ctgn0g04", "cthn0g04", "ctjn0g04", "ctzn0g04", "exif2c08", "f00n0g08", "f00n2c08", "f01n0g08", "f01n2c08", "f02n0g08", "f02n2c08", "f03n0g08", "f03n2c08", "f04n0g08", "f04n2c08", "f99n0g04", "g03n0g16", "g03n2c08", "g03n3p04", "g04n0g16", "g04n2c08", "g04n3p04", "g05n0g16", "g05n2c08", "g05n3p04", "g07n0g16", "g07n2c08", "g07n3p04", "g10n0g16", "g10n2c08", "g10n3p04", "g25n0g16", "g25n2c08", "g25n3p04", "oi1n0g16", "oi1n2c16", "oi2n0g16", "oi2n2c16", "oi4n0g16", "oi4n2c16", "oi9n0g16", "oi9n2c16", "pp0n2c16", "pp0n6a08", "ps1n0g08", "ps1n2c16", "ps2n0g08", "ps2n2c16", "s01i3p01", "s01n3p01", "s02i3p01", "s02n3p01", "s03i3p01", "s03n3p01", "s04i3p01", "s04n3p01", "s05i3p02", "s05n3p02", "s06i3p02", "s06n3p02", "s07i3p02", "s07n3p02", "s08i3p02", "s08n3p02", "s09i3p02", "s09n3p02", "s32i3p04", "s32n3p04", "s33i3p04", "s33n3p04", "s34i3p04", "s34n3p04", "s35i3p04", "s35n3p04", "s36i3p04", "s36n3p04", "s37i3p04", "s37n3p04", "s38i3p04", "s38n3p04", "s39i3p04", "s39n3p04", "s40i3p04", "s40n3p04", "tbbn0g04", "tbbn2c16", "tbbn3p08", "tbgn2c16", "tbgn3p08", "tbrn2c08", "tbwn0g16", "tbwn3p08", "tbyn3p08", "tm3n3p02", "tp0n0g08", "tp0n2c08", "tp0n3p08", "tp1n3p08", "z00n2c08", "z03n2c08", "z06n2c08", "z09n2c08", }; INSTANTIATE_TEST_CASE_P(/*nothing*/, Imgcodecs_Png_PngSuite, testing::ValuesIn(pngsuite_files)); typedef testing::TestWithParam Imgcodecs_Png_PngSuite_Corrupted; TEST_P(Imgcodecs_Png_PngSuite_Corrupted, decode) { const string root = cvtest::TS::ptr()->get_data_path(); const string filename = root + "pngsuite/" + GetParam() + ".png"; Mat src = imread(filename, IMREAD_UNCHANGED); // Corrupted files should not be read EXPECT_TRUE(src.empty()); } const string pngsuite_files_corrupted[] = { "xc1n0g08", "xc9n2c08", "xcrn0g04", "xcsn0g01", "xd0n2c08", "xd3n2c08", "xd9n2c08", "xdtn0g01", "xhdn0g08", "xlfn0g04", "xs1n0g01", "xs2n0g01", "xs4n0g01", "xs7n0g01", }; INSTANTIATE_TEST_CASE_P(/*nothing*/, Imgcodecs_Png_PngSuite_Corrupted, testing::ValuesIn(pngsuite_files_corrupted)); #endif // HAVE_PNG }} // namespace