Page 1 of 1
Watermarking problem
Posted: 2016-06-05T08:33:32-07:00
by life24
Hello,
How can watermark a color image inside a gray scale image?
Thanks
Re: Watermarking problem
Posted: 2016-06-05T10:56:56-07:00
by fmw42
see
http://www.imagemagick.org/Usage/compose/#dissolve
It does not matter if one image is gray and the other is color (either way)
Code: Select all
convert grayimage colorimage -compose dissolve \
-define compose:args={src_percent},{dst_percent} \
-composite result
Re: Watermarking problem
Posted: 2016-06-10T14:33:38-07:00
by life24
Thank you,but i think after your solution,grayscale image will be colorful.
Re: Watermarking problem
Posted: 2016-06-10T17:53:51-07:00
by fmw42
If you put a color watermark on a grayscale image, the result must be sRGB and not grayscale, since there is some color in the picture. You cannot keep the result as grayscale.
If you want a grayscale result, either add -colorspace gray at the end before the output or use a grayscale version of the watermark image