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333 lines
7.8 KiB
C++
333 lines
7.8 KiB
C++
// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html
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#include "test_precomp.hpp"
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namespace opencv_test { namespace {
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#if defined(HAVE_PNG) || defined(HAVE_SPNG)
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TEST(Imgcodecs_Png, write_big)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filename = root + "readwrite/read.png";
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const string dst_file = cv::tempfile(".png");
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Mat img;
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ASSERT_NO_THROW(img = imread(filename));
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ASSERT_FALSE(img.empty());
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EXPECT_EQ(13043, img.cols);
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EXPECT_EQ(13917, img.rows);
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ASSERT_NO_THROW(imwrite(dst_file, img));
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EXPECT_EQ(0, remove(dst_file.c_str()));
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}
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TEST(Imgcodecs_Png, encode)
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{
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vector<uchar> buff;
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Mat img_gt = Mat::zeros(1000, 1000, CV_8U);
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vector<int> param;
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param.push_back(IMWRITE_PNG_COMPRESSION);
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param.push_back(3); //default(3) 0-9.
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EXPECT_NO_THROW(imencode(".png", img_gt, buff, param));
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Mat img;
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EXPECT_NO_THROW(img = imdecode(buff, IMREAD_ANYDEPTH)); // hang
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EXPECT_FALSE(img.empty());
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), img, img_gt);
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}
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TEST(Imgcodecs_Png, regression_ImreadVSCvtColor)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string imgName = root + "../cv/shared/lena.png";
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Mat original_image = imread(imgName);
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Mat gray_by_codec = imread(imgName, IMREAD_GRAYSCALE);
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Mat gray_by_cvt;
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cvtColor(original_image, gray_by_cvt, COLOR_BGR2GRAY);
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Mat diff;
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absdiff(gray_by_codec, gray_by_cvt, diff);
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EXPECT_LT(cvtest::mean(diff)[0], 1.);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(10, 0), gray_by_codec, gray_by_cvt);
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}
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// Test OpenCV issue 3075 is solved
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TEST(Imgcodecs_Png, read_color_palette_with_alpha)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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Mat img;
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// First Test : Read PNG with alpha, imread flag -1
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img = imread(root + "readwrite/color_palette_alpha.png", IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 4);
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// pixel is red in BGRA
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EXPECT_EQ(img.at<Vec4b>(0, 0), Vec4b(0, 0, 255, 255));
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EXPECT_EQ(img.at<Vec4b>(0, 1), Vec4b(0, 0, 255, 255));
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// Second Test : Read PNG without alpha, imread flag -1
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img = imread(root + "readwrite/color_palette_no_alpha.png", IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 3);
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// pixel is red in BGR
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EXPECT_EQ(img.at<Vec3b>(0, 0), Vec3b(0, 0, 255));
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EXPECT_EQ(img.at<Vec3b>(0, 1), Vec3b(0, 0, 255));
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// Third Test : Read PNG with alpha, imread flag 1
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img = imread(root + "readwrite/color_palette_alpha.png", IMREAD_COLOR);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 3);
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// pixel is red in BGR
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EXPECT_EQ(img.at<Vec3b>(0, 0), Vec3b(0, 0, 255));
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EXPECT_EQ(img.at<Vec3b>(0, 1), Vec3b(0, 0, 255));
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img = imread(root + "readwrite/color_palette_alpha.png", IMREAD_COLOR_RGB);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 3);
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// pixel is red in RGB
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EXPECT_EQ(img.at<Vec3b>(0, 0), Vec3b(255, 0, 0));
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EXPECT_EQ(img.at<Vec3b>(0, 1), Vec3b(255, 0, 0));
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// Fourth Test : Read PNG without alpha, imread flag 1
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img = imread(root + "readwrite/color_palette_no_alpha.png", IMREAD_COLOR);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 3);
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// pixel is red in BGR
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EXPECT_EQ(img.at<Vec3b>(0, 0), Vec3b(0, 0, 255));
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EXPECT_EQ(img.at<Vec3b>(0, 1), Vec3b(0, 0, 255));
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img = imread(root + "readwrite/color_palette_no_alpha.png", IMREAD_COLOR_RGB);
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ASSERT_FALSE(img.empty());
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ASSERT_TRUE(img.channels() == 3);
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// pixel is red in RGB
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EXPECT_EQ(img.at<Vec3b>(0, 0), Vec3b(255, 0, 0));
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EXPECT_EQ(img.at<Vec3b>(0, 1), Vec3b(255, 0, 0));
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}
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typedef testing::TestWithParam<string> Imgcodecs_Png_PngSuite;
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TEST_P(Imgcodecs_Png_PngSuite, decode)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filename = root + "pngsuite/" + GetParam() + ".png";
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const string xml_filename = root + "pngsuite/" + GetParam() + ".xml";
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FileStorage fs(xml_filename, FileStorage::READ);
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EXPECT_TRUE(fs.isOpened());
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Mat src = imread(filename, IMREAD_UNCHANGED);
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Mat gt;
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fs.getFirstTopLevelNode() >> gt;
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), src, gt);
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}
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const string pngsuite_files[] =
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{
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"basi0g01",
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"basi0g02",
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"basi0g04",
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"basi0g08",
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"basi0g16",
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"basi2c08",
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"basi2c16",
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"basi3p01",
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"basi3p02",
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"basi3p04",
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"basi3p08",
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"basi4a08",
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"basi4a16",
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"basi6a08",
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"basi6a16",
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"basn0g01",
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"basn0g02",
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"basn0g04",
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"basn0g08",
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"basn0g16",
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"basn2c08",
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"basn2c16",
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"basn3p01",
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"basn3p02",
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"basn3p04",
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"basn3p08",
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"basn4a08",
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"basn4a16",
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"basn6a08",
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"basn6a16",
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"bgai4a08",
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"bgai4a16",
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"bgan6a08",
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"bgan6a16",
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"bgbn4a08",
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"bggn4a16",
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"bgwn6a08",
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"bgyn6a16",
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"ccwn2c08",
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"ccwn3p08",
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"cdfn2c08",
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"cdhn2c08",
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"cdsn2c08",
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"cdun2c08",
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"ch1n3p04",
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"ch2n3p08",
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"cm0n0g04",
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"cm7n0g04",
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"cm9n0g04",
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"cs3n2c16",
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"cs3n3p08",
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"cs5n2c08",
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"cs5n3p08",
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"cs8n2c08",
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"cs8n3p08",
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"ct0n0g04",
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"ct1n0g04",
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"cten0g04",
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"ctfn0g04",
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"ctgn0g04",
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"cthn0g04",
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"ctjn0g04",
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"ctzn0g04",
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"exif2c08",
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"f00n0g08",
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"f00n2c08",
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"f01n0g08",
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"f01n2c08",
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"f02n0g08",
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"f02n2c08",
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"f03n0g08",
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"f03n2c08",
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"f04n0g08",
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"f04n2c08",
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"f99n0g04",
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"g03n0g16",
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"g03n2c08",
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"g03n3p04",
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"g04n0g16",
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"g04n2c08",
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"g04n3p04",
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"g05n0g16",
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"g05n2c08",
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"g05n3p04",
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"g07n0g16",
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"g07n2c08",
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"g07n3p04",
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"g10n0g16",
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"g10n2c08",
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"g10n3p04",
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"g25n0g16",
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"g25n2c08",
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"g25n3p04",
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"oi1n0g16",
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"oi1n2c16",
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"oi2n0g16",
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"oi2n2c16",
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"oi4n0g16",
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"oi4n2c16",
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"oi9n0g16",
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"oi9n2c16",
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"pp0n2c16",
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"pp0n6a08",
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"ps1n0g08",
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"ps1n2c16",
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"ps2n0g08",
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"ps2n2c16",
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"s01i3p01",
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"s01n3p01",
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"s02i3p01",
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"s02n3p01",
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"s03i3p01",
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"s03n3p01",
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"s04i3p01",
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"s04n3p01",
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"s05i3p02",
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"s05n3p02",
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"s06i3p02",
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"s06n3p02",
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"s07i3p02",
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"s07n3p02",
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"s08i3p02",
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"s08n3p02",
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"s09i3p02",
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"s09n3p02",
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"s32i3p04",
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"s32n3p04",
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"s33i3p04",
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"s33n3p04",
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"s34i3p04",
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"s34n3p04",
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"s35i3p04",
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"s35n3p04",
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"s36i3p04",
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"s36n3p04",
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"s37i3p04",
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"s37n3p04",
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"s38i3p04",
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"s38n3p04",
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"s39i3p04",
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"s39n3p04",
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"s40i3p04",
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"s40n3p04",
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"tbbn0g04",
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"tbbn2c16",
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"tbbn3p08",
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"tbgn2c16",
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"tbgn3p08",
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"tbrn2c08",
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"tbwn0g16",
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"tbwn3p08",
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"tbyn3p08",
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"tm3n3p02",
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"tp0n0g08",
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"tp0n2c08",
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"tp0n3p08",
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"tp1n3p08",
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"z00n2c08",
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"z03n2c08",
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"z06n2c08",
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"z09n2c08",
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};
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INSTANTIATE_TEST_CASE_P(/*nothing*/, Imgcodecs_Png_PngSuite,
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testing::ValuesIn(pngsuite_files));
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typedef testing::TestWithParam<string> Imgcodecs_Png_PngSuite_Corrupted;
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TEST_P(Imgcodecs_Png_PngSuite_Corrupted, decode)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filename = root + "pngsuite/" + GetParam() + ".png";
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Mat src = imread(filename, IMREAD_UNCHANGED);
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// Corrupted files should not be read
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EXPECT_TRUE(src.empty());
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}
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const string pngsuite_files_corrupted[] = {
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"xc1n0g08",
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"xc9n2c08",
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"xcrn0g04",
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"xcsn0g01",
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"xd0n2c08",
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"xd3n2c08",
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"xd9n2c08",
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"xdtn0g01",
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"xhdn0g08",
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"xlfn0g04",
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"xs1n0g01",
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"xs2n0g01",
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"xs4n0g01",
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"xs7n0g01",
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};
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INSTANTIATE_TEST_CASE_P(/*nothing*/, Imgcodecs_Png_PngSuite_Corrupted,
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testing::ValuesIn(pngsuite_files_corrupted));
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#endif // HAVE_PNG
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}} // namespace
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