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Please help: convert to 8 bit grayscale

https://imagemagick.com/discourse-server/viewtopic.php?t=7768

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Posted: 2006-11-08T23:08:45-07:00
by anthony
I think you need more specific info. Output format? image? etc...

Posted: 2006-11-12T19:56:19-07:00
by anthony
As a guess
convert input.bmp -colorspace grey -depth 8 -colors 256 output.bmp

Posted: 2006-11-12T19:57:34-07:00
by anthony
As a guess

Code: Select all

   convert input.bmp -colorspace gray \
                -quantize gray -depth 8 -colors 256 output.bmp
But as I am not a Windows used and as such do not have any experience with BMP, I can't be certain.
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