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https://issues.apache.org/jira/browse/IMAGING-141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266754#comment-14266754
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Josh Highley commented on IMAGING-141:
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Depending on how it's stored, there could also be an 8 fold increase memory
usage. All other imaging libraries I've used output a binary BufferedImage for
1bpp input. If performance is truly an issue, make the default to match the
bpp, but allow programmers to 'upscale' the type.
> BufferedImage from TIFF is always 24 or 32 bpp
> ----------------------------------------------
>
> Key: IMAGING-141
> URL: https://issues.apache.org/jira/browse/IMAGING-141
> Project: Commons Imaging
> Issue Type: Bug
> Components: Format: TIFF
> Reporter: Josh Highley
> Fix For: Patch Needed
>
>
> When getting a BufferedImage from a TIFF, TiffImageParser.getBufferedImage
> gets the TIFF's BPP from the TIFF tags, but at the end
> ImageBuilder.getBufferedImage() will always set the BufferedImage ColorModel
> BPP to 32 for images with alpha and 24 bpp otherwise. Many TIFFs are 1 bpp
> (G3 and G4) so the BufferedImage should also be 1 bpp.
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