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[Octave-bug-tracker] [bug #45565] Using imwrite to write an 8-bit image


From: Mike Miller
Subject: [Octave-bug-tracker] [bug #45565] Using imwrite to write an 8-bit image to BMP creates a 24-bit image
Date: Mon, 17 Aug 2015 13:31:38 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.2.0

Follow-up Comment #24, bug #45565 (project octave):

Can we keep this bug report on topic?

The fix that was made was to create uncompressed BMP files instead of
RLE-compressed BMP files, and that is now working as you've confirmed when you
specify a colormap to force the image to be an indexed image.

Your additional observation that the file should be an 8-bit indexed grayscale
file when the input is a uint8 was not addressed by the fix made so far. That
is an additional change where it appears that Matlab is creating indexed files
depending on the image type and the input matrix type. Perhaps a new bug
report to keep the discussion from getting confused?

There is nothing wrong with your compilation.

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