On Thu, 21 May 2009 16:12:55 -0400 Steve Stachurski <[email protected]> wrote:
| Hello- | | I'm seeking some more information regarding the Level method that can be | performed to manipulate an image. I have tried dozens of different | ranges of black and white points, and I always get an image that is | either all white or all black. I have tried setting my black points | anywhere from 0 to 0.7 and my white points anywhere from 0.3 to 1.0. | | I'm using PerlMagick to to this. There is a parameter to the Level | method, "levels," which takes a string, but I have no idea what kind of | string goes here. | Two things. You may be better asking in the IM Forums http://www.imagemagick.org/discourse-server/viewtopic.php?f=1 and secondly an example would be good. Also have you first tried to use the command line -level operator so you can understand what you are doing. IM examples, Color Modifications, Direct Level Adjustments http://www.imagemagick.org/Usage/color/#level Also look at the newer varients such as using +level (or adding a '!' flag for Perl magick arguments) and -level-colors. NOTE: using values like 0.3 and 1.0 probably produce black as it is expecting values in the range from 0 to Quantumrange. EG 65535 as such your values are all near zero and thus 'near black'. Anthony Thyssen ( System Programmer ) <[email protected]> ----------------------------------------------------------------------------- When someone tells me to go fly a kite I say "God bless you, thank you VERY much" ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
