RFC: OpenJPEG based Jpeg2000 encoder #16524
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Currently, the following input color spaces and depth conversions are supported: - 8 bit -> 8 bit - 16 bit -> 16 bit (IMREAD_UNCHANGED, IMREAD_ANYDEPTH) - RGB(a) -> BGR - RGBA -> BGRA (IMREAD_UNCHANGED) - Y(a) -> Y(a) (IMREAD_ANYCOLOR, IMREAD_GRAY, IMREAD_UNCHANGED)) - YCC -> Y (IMREAD_GRAY)
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Please continue working in this PR: #16494 |
This enables OpenJPEG based JPEG2000 imread support by default, which can be disabled by -DWITH_OPENJPEG=OFF. In case OpenJPEG is enabled and found, any checks for Jasper are skipped.
…ANGED With IMREAD_UNCHANGED, values are kept from the input image, without it components are downscaled to CV_8U range.
Support IMREAD_GRAY when input color space is RGB or unspecified. Support YUV input color space for BGR output.
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Images with depth CV_8U and CV_16U are supported, with 1 to 4 channels.
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see #16494 |
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Encoder part
This goes on top of #16494