Hi I'm reusing book image files from archive.org for a javascript 'flippy' book reader. The source files are large jpeg2000 files. On archive.org itself these files are processed on the fly: reduced in size by a factor of 4, and output as jpeg files with a quality setting of 75%. This is done using kakadu. I'm trying to do the same thing with ImageMagick, but offline, so I'm not concerned about processing time. The kakadu output images are reasonable, but the images I'm getting out of ImageMagick suffer badly from ringing (I assume it's ringing: shadow images of vertical lines, as in 'h' or 'l' just to the left of the real line).
At the moment I'm just using convert filename.jp2 -reduce x600 -quality 80% filename.jpeg Is there a better way to deal with this particular type of image? I know that the target size/quality is reasonable for the images, since kakadu can do it. Thanks Graham _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
