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Merge pull request #19540 from asmorkalov:as/openexr_comression_options

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OpenEXR compression options

* Adding possibility to select the compression type for the OpenEXR format.

There are compression modes other than the default that are more suited for certain data. Mainly grainy/noisy data.

* Code review fixes.

Co-authored-by: Daniel Rydstrom <daniel.rydstrom@sick.se>
This commit is contained in:
Alexander Smorkalov
2021-02-20 19:28:08 +03:00
committed by GitHub
parent ca7518c13b
commit c131c12fd7
3 changed files with 90 additions and 1 deletions
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modules/imgcodecs/src/grfmt_exr.cpp
+39 -1
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@@ -589,7 +589,45 @@ bool ExrEncoder::write( const Mat& img, const std::vector<int>& params )
type = FLOAT;
break;
default:
throw std::runtime_error( "IMWRITE_EXR_TYPE is invalid or not supported" );
CV_Error(Error::StsBadArg, "IMWRITE_EXR_TYPE is invalid or not supported");
}
}
if ( params[i] == IMWRITE_EXR_COMPRESSION )
{
switch ( params[i + 1] )
{
case IMWRITE_EXR_COMPRESSION_NO:
header.compression() = NO_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_RLE:
header.compression() = RLE_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_ZIPS:
header.compression() = ZIPS_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_ZIP:
header.compression() = ZIP_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_PIZ:
header.compression() = PIZ_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_PXR24:
header.compression() = PXR24_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_B44:
header.compression() = B44_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_B44A:
header.compression() = B44A_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_DWAA:
header.compression() = DWAA_COMPRESSION;
break;
case IMWRITE_EXR_COMPRESSION_DWAB:
header.compression() = DWAB_COMPRESSION;
break;
default:
CV_Error(Error::StsBadArg, "IMWRITE_EXR_COMPRESSION is invalid or not supported");
}
}
}