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Merge pull request #26706 from Kumataro:fix26705

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imgcodecs: fix EXR tests
This commit is contained in:
Alexander Smorkalov
2025-01-09 15:46:52 +03:00
committed by GitHub
parent 0da8c760d3 1281317e17
commit bdb6a968ce
2 changed files with 27 additions and 6 deletions
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modules/imgcodecs/src/grfmt_exr.cpp
+20 -4
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@@ -235,6 +235,17 @@ bool ExrDecoder::readData( Mat& img )
( (m_iscolor && !m_ischroma) || color) ? 3 : alphasupported ? 2 : 1 ); // number of channels to read may exceed channels in output img
size_t xStride = floatsize * channelstoread;
// See https://github.com/opencv/opencv/issues/26705
// If ALGO_HINT_ACCURATE is set, read BGR and swap to RGB.
// If ALGO_HINT_APPROX is set, read RGB directly.
bool doReadRGB = m_use_rgb;
bool doPostColorSwap = false; // After decoding, swap BGR to RGB
if(m_use_rgb && (getDefaultAlgorithmHint() == ALGO_HINT_ACCURATE) )
{
doReadRGB = false;
doPostColorSwap = true;
}
AutoBuffer<char> copy_buffer;
if( !justcopy )
@@ -373,7 +384,7 @@ bool ExrDecoder::readData( Mat& img )
if( m_iscolor )
{
if (m_use_rgb)
if (doReadRGB)
{
if( m_red && (m_red->xSampling != 1 || m_red->ySampling != 1) )
UpSample( data, channelstoread, step / xstep, m_red->xSampling, m_red->ySampling );
@@ -397,7 +408,7 @@ bool ExrDecoder::readData( Mat& img )
if( chromatorgb )
{
if (m_use_rgb)
if (doReadRGB)
ChromaToRGB( (float *)data, m_height, channelstoread, step / xstep );
else
ChromaToBGR( (float *)data, m_height, channelstoread, step / xstep );
@@ -424,7 +435,7 @@ bool ExrDecoder::readData( Mat& img )
{
if( chromatorgb )
{
if (m_use_rgb)
if (doReadRGB)
ChromaToRGB( (float *)buffer, 1, defaultchannels, step );
else
ChromaToBGR( (float *)buffer, 1, defaultchannels, step );
@@ -452,7 +463,7 @@ bool ExrDecoder::readData( Mat& img )
}
if( color )
{
if (m_use_rgb)
if (doReadRGB)
{
if( m_red && (m_red->xSampling != 1 || m_red->ySampling != 1) )
UpSampleY( data, defaultchannels, step / xstep, m_red->ySampling );
@@ -477,6 +488,11 @@ bool ExrDecoder::readData( Mat& img )
close();
if(doPostColorSwap)
{
cvtColor( img, img, cv::COLOR_BGR2RGB );
}
return result;
}