contrast shrink?
Russ Butler <[email protected]>
| Newsgroups | gmane.comp.video.image-magick.user |
|---|---|
| Message-ID | <[email protected]> |
I use ImageMagick a LOT. Thanks for a great program. I use convert imagein -channel all -contrast-stretch 0x0 imageout on raw film scans to expand the histogram prior to gui editing. Sometimes I'd like to shrink/de-contrast an image. like convert imagein -channel all -contrast-stretch -1%%x-1%% imageout But negative arguments to -contrast-stretch seem to be ignored, with no complaint, and no effect on the image. Can I achieve a contrast shrink some other way? TIA -- Russ Butler (NJ USA)