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https://issues.apache.org/jira/browse/IMAGING-89?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457367#comment-13457367
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Manuel Bleichenbacher commented on IMAGING-89:
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In order to determine whether inverted values are used or not (for CMYK and
YCCK values), I need to check whether the APP14 segment is present or not.
Thus, the new extension does not really simplify my code as I still need to use
the JpegSegmentReader directly.
> Detect the YCCK color space/type
> --------------------------------
>
> Key: IMAGING-89
> URL: https://issues.apache.org/jira/browse/IMAGING-89
> Project: Commons Imaging
> Issue Type: New Feature
> Components: Format: JPEG
> Affects Versions: 1.x
> Reporter: Arthur Bogaart
> Priority: Minor
> Fix For: 1.0
>
> Attachments: test-YCCK.jpg
>
>
> I use Sanselan/CommonsImaging to detect if uploaded images are in the RGB
> color space, and if not convert them to RGB.
> Currently, CI marks jpg images in the YCCK color space as CMYK:
> ImageInfo info = Imaging.getImageInfo(is, "YCCK.jpg");
> info.getColorType() == ImageInfo.COLOR_TYPE_CMYK
> So I have to do a custom check afterwards to differ between YCCK and CMYK.
> I use the following to do this:
> import com.drew.imaging.jpeg.JpegSegmentReader;
> JpegSegmentReader reader = new JpegSegmentReader(is);
> byte[] appe = reader.readSegment(JpegSegmentReader.SEGMENT_APPE);
> bool isYCCK = appe != null && appe[11] == 2;
> Would it be possible to incorporate this into CommonsImaging?
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