192 lines
6.2 KiB
C++
192 lines
6.2 KiB
C++
|
// 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 {
|
||
|
|
|
||
|
|
#ifdef HAVE_PNG
|
||
|
|
|
||
|
|
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<uchar> buff;
|
||
|
|
Mat img_gt = Mat::zeros(1000, 1000, CV_8U);
|
||
|
|
vector<int> 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<Vec4b>(0, 0), Vec4b(0, 0, 255, 255));
|
||
|
|
EXPECT_EQ(img.at<Vec4b>(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<Vec3b>(0, 0), Vec3b(0, 0, 255));
|
||
|
|
EXPECT_EQ(img.at<Vec3b>(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<Vec3b>(0, 0), Vec3b(0, 0, 255));
|
||
|
|
EXPECT_EQ(img.at<Vec3b>(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<Vec3b>(0, 0), Vec3b(0, 0, 255));
|
||
|
|
EXPECT_EQ(img.at<Vec3b>(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<string> 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<Vec3b>(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<Vec3b>(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<Vec3b>(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));
|
||
|
|
|
||
|
|
#endif // HAVE_PNG
|
||
|
|
|
||
|
|
}} // namespace
|