Grant on wrote... | I just started using the normalize function to normalize my images. | It's usually very impressive and a big improvement over non-normalized | images. Some of the images are worse though, especially images that | are predominantly one color, especially red. Is the normalize | function being improved, or is it a static sort of a function that | either works well on an image or doesn't? | | - Grant
Before you go any further check what version of IM you are using there was a problem with normalize (regards to point #2) below about a year or so ago. Their is some disscussion going on about normalize. 1/ It is implemented as a -contrast-stretch 2,99% That means it it will burn or loose the 2% of the darkest colors and 1% of the lightest. 2/ It does so uniformly across all the given channels. That is by default all the RGB channels are 'stretched' by the same amount. 3/ Unfortunateally (and this is where the disscussion is) it adjusts the colors in terms of histogram 'bins' rather than directly adjusting the color values (as per the -level option) after determinging the colors to be stretched to the new black and white points. 4/ I myself am currently working on some enhancements to -level as detailed in the raw notes in IM Examples, colors. Those notes will become a re-write of that page. What you may really want however is to look at some of the shell scripts that Fred Weinhaus has written for image enhancement. http://www.fmwconcepts.com/imagemagick/ These scripts are 'proof of concent' type scripts, for posibly new functions into ImageMagick, but in the mean time work well on there own. Anthony Thyssen ( Graphics Enthusiast ) <[EMAIL PROTECTED]> ----------------------------------------------------------------------------- At 300 dpi you can tell she's wearing a swimsuit. At 600 dpi you can tell it's wet. At 1200 dpi you can tell it's painted on. I suppose at 2400 dpi you can tell if the paint is giving her a rash. -- Joshua R. Poulson ----------------------------------------------------------------------------- IM Examples http://www.imagemagick.org/Usage/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
