I have gotten gotten this to work. Basically, I generated a png that had the areas of the image (a jpeg in this case) that contain the color to change as black pixels and all other areas as transparent pixels. Then I did an feComposite using the xor operator on the two images. Success! although only useful in very limited circumstances, this was a fun thing to figure out.
On Wed, Oct 10, 2012 at 12:09 PM, Marty Sullivan <[email protected]> wrote: > Or perhaps I could do this with a <mask> instead? > > > On Wed, Oct 10, 2012 at 9:44 AM, dark3251 <[email protected]> wrote: > >> ** >> >> >> I am trying to figure out if there would be a way to apply a filter to an >> image that would filter a specific color and change it. For example, let's >> say I wanted to apply a filter that would take any pure blue pixels and >> change its alpha to 0 making it transparent. >> >> I've been looking at the feColorMatrix and/or feComponentTransfer but I'm >> not sure if this could be done with those. Another idea that crossed my >> mind was feComposite by loading in a pure transparent image and then taking >> the image to be filtered and somehow making the composite result change >> just the color I'm looking for. >> >> Anyone have any ideas here? It seems like I should be capable of doing >> this somehow. >> >> >> > > [Non-text portions of this message have been removed] ------------------------------------ ----- To unsubscribe send a message to: [email protected] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ----Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
