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Merge remote-tracking branch 'upstream/3.4' into merge-3.4

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OpenCV Developers
2022-05-14 11:21:33 +00:00
parent 8d0fbc6a1e 766f58ed7e
commit d9a444ca1a
25 changed files with 312 additions and 69 deletions
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2
modules/imgcodecs/include/opencv2/imgcodecs.hpp
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@@ -301,7 +301,7 @@ CV_EXPORTS Mat imdecode( InputArray buf, int flags, Mat* dst);
The function imencode compresses the image and stores it in the memory buffer that is resized to fit the
result. See cv::imwrite for the list of supported formats and flags description.
@param ext File extension that defines the output format.
@param ext File extension that defines the output format. Must include a leading period.
@param img Image to be written.
@param buf Output buffer resized to fit the compressed image.
@param params Format-specific parameters. See cv::imwrite and cv::ImwriteFlags.

2
modules/imgcodecs/src/grfmt_jpeg.cpp
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@@ -602,9 +602,9 @@ bool JpegEncoder::write( const Mat& img, const std::vector<int>& params )
JpegErrorMgr jerr;
JpegDestination dest;
jpeg_create_compress(&cinfo);
cinfo.err = jpeg_std_error(&jerr.pub);
jerr.pub.error_exit = error_exit;
jpeg_create_compress(&cinfo);
if( !m_buf )
{

2
modules/imgcodecs/src/grfmt_tiff.cpp
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@@ -1121,7 +1121,7 @@ bool TiffEncoder::writeLibTiff( const std::vector<Mat>& img_vec, const std::vect
CV_TIFF_CHECK_CALL(TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, sample_format));
if (page_compression != COMPRESSION_NONE)
if (page_compression == COMPRESSION_LZW || page_compression == COMPRESSION_ADOBE_DEFLATE || page_compression == COMPRESSION_DEFLATE)
{
CV_TIFF_CHECK_CALL(TIFFSetField(tif, TIFFTAG_PREDICTOR, predictor));
}

43
modules/imgcodecs/test/test_tiff.cpp
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@@ -359,6 +359,49 @@ TEST(Imgcodecs_Tiff, read_palette_color_image)
ASSERT_EQ(CV_8UC3, img.type());
}
TEST(Imgcodecs_Tiff, readWrite_predictor)
{
/* see issue #21871
*/
const uchar sample_data[160] = {
0xff, 0xff, 0xff, 0xff, 0x88, 0x88, 0xff, 0xff, 0x88, 0x88, 0xff, 0xff, 0xff, 0xff, 0xff, 0x88,
0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00,
0xff, 0x00, 0x00, 0x44, 0xff, 0xff, 0x88, 0xff, 0x33, 0x00, 0x66, 0xff, 0xff, 0x88, 0x00, 0x44,
0x88, 0x00, 0x44, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x44, 0xff, 0xff, 0x11, 0x00, 0xff,
0x11, 0x00, 0x88, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff,
0x11, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x33, 0x00, 0x88, 0xff, 0x00, 0x66, 0xff,
0x11, 0x00, 0x66, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x44, 0x33, 0x00, 0xff, 0xff,
0x88, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
0xff, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x33, 0x00, 0x00, 0x66, 0xff, 0xff,
0xff, 0xff, 0x88, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff
};
cv::Mat mat(10, 16, CV_8UC1, (void*)sample_data);
int methods[] = {
COMPRESSION_NONE, COMPRESSION_LZW,
COMPRESSION_PACKBITS, COMPRESSION_DEFLATE, COMPRESSION_ADOBE_DEFLATE
};
for (size_t i = 0; i < sizeof(methods) / sizeof(int); i++)
{
string out = cv::tempfile(".tif");
std::vector<int> params;
params.push_back(TIFFTAG_COMPRESSION);
params.push_back(methods[i]);
params.push_back(TIFFTAG_PREDICTOR);
params.push_back(PREDICTOR_HORIZONTAL);
EXPECT_NO_THROW(cv::imwrite(out, mat, params));
const Mat img = cv::imread(out, IMREAD_UNCHANGED);
ASSERT_FALSE(img.empty());
ASSERT_EQ(0, cv::norm(mat, img, cv::NORM_INF));
EXPECT_EQ(0, remove(out.c_str()));
}
}
//==================================================================================================