thumb sharpening breaking on gif files

[nickfzx]

hi so if I turn on thumb sharpening it creates undesirable results if the images are gif files...jpegs work great and look a lot better.

here is an example of what happens:

http://amateurillustrator.com.s2734.gridserver.com/cpg/index.php

as I may be changing this link a lot here is a screenshot:

(https://coppermine-gallery.com/forum/proxy.php?request=http%3A%2F%2Famateurillustrator.com.s2734.gridserver.com%2Fthumbs.jpg&hash=ecf5a0a09039b2e47de4aee9b88d0ef5cfc84a6a)

Any ideas?

Cheers

Nick

[nickfzx]

has no one else experienced this...the two on the left are jpegs and the two on the right are gif files.

[Hein Traag]

As they say... patiencie is a virtue. Give it a few days before expecting an answer from someone who knows.

Cheers!
Hein

[Stramm]

sharping (ie the unsharpen mask) adds more detail, hence colors, to the image. Cause the number of colors in a gif image are limited, the result may look (when sharpened) poor.

The most practical solution is to not allow sharpening for gif images

in include/picmgmnt.inc.php find

Code Select Expand

            if ($sharpen==1 && $CONFIG['enable_unsharp']==1) {
and replace with

Code Select Expand

            if ($sharpen==1 && $CONFIG['enable_unsharp']==1 && $imginfo[2] != GIS_GIF) {

[nickfzx]

that's great thanks