WRONG COLOR?

[paulgao]

ORGINAL PIC:

for 6.7.4-10

for 6.8.4-4


same command line IN Centos 6.4 by libjpeg-trubo:

Code: Select all

/usr/local/bin/convert /home/cache/filestorage/a9/10914457 -colorspace RGB -strip -coalesce -thumbnail '768x1280^' -gravity center -extent '768x1280' -format jpg xxx.jpg

WHY?
BUG?

[fmw42]

-colorspace RGB was non-linear sRGB in IM 6.4.7.10 and is linear RGB now in the current version. There was a switch between versions to make it correct

This works fine for me on both versions on my Mac

convert 10914457.jpg -strip -thumbnail 768x1280^ -gravity center -extent 768x1280 1tmp1.jpg

You do not need coalesce or -format. They do nothing in this context.

See
viewtopic.php?f=4&t=21269
http://www.imagemagick.org/script/forma ... colorspace

[paulgao]

Because I need show picture on IE browser, other colorspace ie. CMYK is not supported by IE, so I must write --colorspace options.
But I use srgb，picture color still see have problem？

Code: Select all

/usr/local/bin/convert /home/cache/filestorage/a9/10914457 -colorspace sRGB -strip -coalesce -thumbnail '768x1280^' -gravity center -extent '768x1280' -format jpg 6.8.4-4.jpg

I ignore what?

[fmw42]

You need to use -colorspace RGB in the older version and -colorspace sRGB for the newer version of IM.

-format does nothing in convert. It is needed only in mogrify

[paulgao]

My fault, BIG THX.