[Octave-bug-tracker] [bug #45565] Using imwrite to write an 8-bit iamge to BMP creates a 24 bit image

[Ian Journeaux]

Follow-up Comment #12, bug #45565 (project octave):

Thanks Carne for looking at this.

It seem that this must be related to Octave under Windows. 

When I execute ( I am not sure how to insert of code block in the comment)

octave> img = uint8 (ones (100, 1) .* [0:255]);
octave> map = gray(256);
octave> imwrite (img, map, "foo-octave.bmp");
octave> exit

The resulting image has a bit depth of 32 and when I try and open it in ImageJ
I get a "Compression Not Supported" error. 32 is an odd bit depth. 

Executing 

octave> imwrite (img, "foo-octave.bmp");

produces and image with a bit depth of 24.

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