ImageMagick: What's the equivalent to "Auto Color Correction" in Photoshop?

[silences...@yahoo.com]

Some initial research suggests that the command "convert -normalize"
would do the trick, but...

1. I tried it on a sample photo and saw no visible change between the
original and the "auto color corrected" one.

2. Aside from two lines in the following URL:
http://www.imagemagick.org/script/command-line-options.php#normalize

I couldn't find detailed documentation on this. Where do I find more
detailed description of what it does?

Is "-normalize" really equivalent to "auto color correct" in Photoshop?
If so, why didn't it do anything on my sample photo?

Thanks!
Sam

[stus...@hotmail.com]

+ errrr... well... the normalize in ImageMagick is slightly
different
from Gimp's normalize.
If you open the image in Gimp, open the Levels dialogue, and
simply click the "AUTO" button, this will often times produce a very
nice "auto corrected" image.

BTW... in that same dialogue are found the white / gray level
correction
buttons... somewhere between these, you should be able to fix almost
any
picture quickly.