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// 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 {
/* < <file_name, image_size>, <imread mode, scale> > */
typedef tuple< tuple<string, Size>, tuple<ImreadModes, int> > Imgcodecs_Resize_t;
typedef testing::TestWithParam< Imgcodecs_Resize_t > Imgcodecs_Resize;
/* resize_flag_and_dims = <imread_flag, scale>*/
const tuple <ImreadModes, int> resize_flag_and_dims[] =
{
make_tuple(IMREAD_UNCHANGED, 1),
make_tuple(IMREAD_REDUCED_GRAYSCALE_2, 2),
make_tuple(IMREAD_REDUCED_GRAYSCALE_4, 4),
make_tuple(IMREAD_REDUCED_GRAYSCALE_8, 8),
make_tuple(IMREAD_REDUCED_COLOR_2, 2),
make_tuple(IMREAD_REDUCED_COLOR_4, 4),
make_tuple(IMREAD_REDUCED_COLOR_8, 8)
};
const tuple<string, Size> images[] =
{
#ifdef HAVE_JPEG
make_tuple<string, Size>("../cv/imgproc/stuff.jpg", Size(640, 480)),
#endif
#ifdef HAVE_PNG
make_tuple<string, Size>("../cv/shared/pic1.png", Size(400, 300)),
#endif
};
TEST_P(Imgcodecs_Resize, imread_reduce_flags)
{
const string file_name = findDataFile(get<0>(get<0>(GetParam())));
const Size imageSize = get<1>(get<0>(GetParam()));
const int imread_flag = get<0>(get<1>(GetParam()));
const int scale = get<1>(get<1>(GetParam()));
const int cols = imageSize.width / scale;
const int rows = imageSize.height / scale;
{
Mat img = imread(file_name, imread_flag);
ASSERT_FALSE(img.empty());
EXPECT_EQ(cols, img.cols);
EXPECT_EQ(rows, img.rows);
}
}
//==================================================================================================
TEST_P(Imgcodecs_Resize, imdecode_reduce_flags)
{
const string file_name = findDataFile(get<0>(get<0>(GetParam())));
const Size imageSize = get<1>(get<0>(GetParam()));
const int imread_flag = get<0>(get<1>(GetParam()));
const int scale = get<1>(get<1>(GetParam()));
const int cols = imageSize.width / scale;
const int rows = imageSize.height / scale;
const std::ios::openmode mode = std::ios::in | std::ios::binary;
std::ifstream ifs(file_name.c_str(), mode);
ASSERT_TRUE(ifs.is_open());
ifs.seekg(0, std::ios::end);
const size_t sz = static_cast<size_t>(ifs.tellg());
ifs.seekg(0, std::ios::beg);
std::vector<char> content(sz);
ifs.read((char*)content.data(), sz);
ASSERT_FALSE(ifs.fail());
{
Mat img = imdecode(Mat(content), imread_flag);
ASSERT_FALSE(img.empty());
EXPECT_EQ(cols, img.cols);
EXPECT_EQ(rows, img.rows);
}
}
//==================================================================================================
INSTANTIATE_TEST_CASE_P(/*nothing*/, Imgcodecs_Resize,
testing::Combine(
testing::ValuesIn(images),
testing::ValuesIn(resize_flag_and_dims)
)
);
//==================================================================================================
TEST(Imgcodecs_Image, read_write_bmp)
{
const size_t IMAGE_COUNT = 10;
const double thresDbell = 32;
for (size_t i = 0; i < IMAGE_COUNT; ++i)
{
stringstream s; s << i;
const string digit = s.str();
const string src_name = TS::ptr()->get_data_path() + "../python/images/QCIF_0" + digit + ".bmp";
const string dst_name = cv::tempfile((digit + ".bmp").c_str());
Mat image = imread(src_name);
ASSERT_FALSE(image.empty());
resize(image, image, Size(968, 757), 0.0, 0.0, INTER_CUBIC);
imwrite(dst_name, image);
Mat loaded = imread(dst_name);
ASSERT_FALSE(loaded.empty());
double psnr = cvtest::PSNR(loaded, image);
EXPECT_GT(psnr, thresDbell);
vector<uchar> from_file;
FILE *f = fopen(dst_name.c_str(), "rb");
fseek(f, 0, SEEK_END);
long len = ftell(f);
from_file.resize((size_t)len);
fseek(f, 0, SEEK_SET);
from_file.resize(fread(&from_file[0], 1, from_file.size(), f));
fclose(f);
vector<uchar> buf;
imencode(".bmp", image, buf);
ASSERT_EQ(buf, from_file);
Mat buf_loaded = imdecode(Mat(buf), 1);
ASSERT_FALSE(buf_loaded.empty());
psnr = cvtest::PSNR(buf_loaded, image);
EXPECT_GT(psnr, thresDbell);
EXPECT_EQ(0, remove(dst_name.c_str()));
}
}
//==================================================================================================
typedef string Ext;
typedef testing::TestWithParam<Ext> Imgcodecs_Image;
TEST_P(Imgcodecs_Image, read_write)
{
const string ext = this->GetParam();
const string full_name = cv::tempfile(ext.c_str());
const string _name = TS::ptr()->get_data_path() + "../cv/shared/baboon.png";
const double thresDbell = 32;
Mat image = imread(_name);
image.convertTo(image, CV_8UC3);
ASSERT_FALSE(image.empty());
imwrite(full_name, image);
Mat loaded = imread(full_name);
ASSERT_FALSE(loaded.empty());
double psnr = cvtest::PSNR(loaded, image);
EXPECT_GT(psnr, thresDbell);
vector<uchar> from_file;
FILE *f = fopen(full_name.c_str(), "rb");
fseek(f, 0, SEEK_END);
long len = ftell(f);
from_file.resize((size_t)len);
fseek(f, 0, SEEK_SET);
from_file.resize(fread(&from_file[0], 1, from_file.size(), f));
fclose(f);
vector<uchar> buf;
imencode("." + ext, image, buf);
ASSERT_EQ(buf, from_file);
Mat buf_loaded = imdecode(Mat(buf), 1);
ASSERT_FALSE(buf_loaded.empty());
psnr = cvtest::PSNR(buf_loaded, image);
EXPECT_GT(psnr, thresDbell);
EXPECT_EQ(0, remove(full_name.c_str()));
}
const string exts[] = {
#ifdef HAVE_PNG
"png",
#endif
#ifdef HAVE_TIFF
"tiff",
#endif
#ifdef HAVE_JPEG
"jpg",
#endif
#if defined(HAVE_JASPER) && defined(OPENCV_IMGCODECS_ENABLE_JASPER_TESTS)
"jp2",
#endif
#if 0 /*defined HAVE_OPENEXR && !defined __APPLE__*/
"exr",
#endif
"bmp",
#ifdef HAVE_IMGCODEC_PXM
"ppm",
#endif
#ifdef HAVE_IMGCODEC_SUNRASTER
"ras",
#endif
};
INSTANTIATE_TEST_CASE_P(imgcodecs, Imgcodecs_Image, testing::ValuesIn(exts));
TEST(Imgcodecs_Image, regression_9376)
{
String path = findDataFile("readwrite/regression_9376.bmp");
Mat m = imread(path);
ASSERT_FALSE(m.empty());
EXPECT_EQ(32, m.cols);
EXPECT_EQ(32, m.rows);
}
//==================================================================================================
TEST(Imgcodecs_Image, write_umat)
{
const string src_name = TS::ptr()->get_data_path() + "../python/images/baboon.bmp";
const string dst_name = cv::tempfile(".bmp");
Mat image1 = imread(src_name);
ASSERT_FALSE(image1.empty());
UMat image1_umat = image1.getUMat(ACCESS_RW);
imwrite(dst_name, image1_umat);
Mat image2 = imread(dst_name);
ASSERT_FALSE(image2.empty());
EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), image1, image2);
EXPECT_EQ(0, remove(dst_name.c_str()));
}
}} // namespace