Forum: Photoshop


Subject: Help! Others see them but I don't - Fringes in images.

dlfurman opened this issue on Apr 02, 2002 ยท 8 posts


dlfurman posted Tue, 02 April 2002 at 11:22 PM

Hello. I've done a bit of work in Poser and Photoshop. I set my character and render in Poser(anti-alias on), export the render as .TIF I've done the basic Magic Wand the background, Select>Inverse and yank that selection into a new canvas. This obviously is not working. "Dude! Use the alpha channel! That's why you saved in .TIF" Uhhh, I'll get back to you on that one. (Actually I'm still checking out the manual on that one. I've also save my WIPs as .PSD go backand fix 'em.) Heck, even spent $9.95 on Photoshop User that had a nice mini-tut on defringing, only thing is when you go back over the edges with the history brush.... I know this is soooo simple, but for the few remaining brain cells left (I have to breathe, eat, ya know, the life stuff) I can't figure it out. What also makes matters worse, it all looks fine on my monitor. HELP! (and be kind to my few remining brain cells!)

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)


mpalash posted Wed, 03 April 2002 at 4:29 AM

Load the alpha channel (usually Alpha 1) in the Poser exported .PSD or .TIF as a selection in Photoshop (check out the Channels tab in Photoshop - View -> Channels). Now try copying and pasting. There should be no fringing. But if you have a steady hand and loads of time, go over the edges with a soft eraser. Do save history states along the way (check the History tab). It is really handy. Enjoy!!


retrocity posted Wed, 03 April 2002 at 6:15 AM

Palash's suggestion should work just fine for you.

Alpha channels are the route to take. I have NEVER had good luck with the "Magic Wand" tool. The only time I use it is if I know I'll be going over the edges later. I also have had the "joy" of showing someone a work I did only to find (to my horror!) that on their monitor a whole lot of "artifacts" pop up on the image!!! Like you it looked fine on my system.

Are you going to do all the post work in PS?

Good Luck in your image, love to see it when it's done.


Cinema1954 posted Wed, 03 April 2002 at 9:39 AM

The problem with seeing artifacts on someone else's system but not on yours probably means that they're using a lower color depth than you. When preparing graphics for the web or other computer-based viewing, it's a good idea to change your own settings to see what it will look like at other color depths.

Annie


dlfurman posted Wed, 03 April 2002 at 3:37 PM

Cinema1954, I did not think of this and that sounds like the ost likely thing. (This I will try) Retrocity, you can see the causes of my consternation in the Digital Artists gallery here. Search for dlfurman (and don't mind the fringed jaggies ;) ) Thank you all for your tips, esp. you Cinema1954.

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)


Alpha posted Wed, 03 April 2002 at 7:50 PM

I would also suggest that you always feather the selection. the amount depends on the resolution you are working at and where the image is going. Feather is in the select menu.


mpalash posted Sun, 07 April 2002 at 3:11 PM

oh! by the way! i'd forgotten to include this in my last post here. try defringing your images (Layer -> Matting -> Defringe). a value of 2-5 pixels take care of the stubbornest of images. experiment and see what suits you. it's pretty simple really :-)


dlm posted Fri, 12 April 2002 at 6:52 PM

Mpalash is right Defringing is the solution,however for it to work properly,only defringe at the very end when you have completed your post production work and are ready to flatten the image.You should have only the final poser figure image on one layer,above the finished background. (This is because defringe mixes the edge pixels of your upper layer with pixels from directly around the image in the layer below it.)