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Preserved Topic: Perfect masks for cutouts against white background??? Pages that link to <a href="https://ozoneasylum.com/backlink?for=19613" title="Pages that link to Preserved Topic: Perfect masks for cutouts against white background???" rel="nofollow" >Preserved Topic: Perfect masks for cutouts against white background???\

 
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Scott99999
Bipolar (III) Inmate

From:
Insane since: Mar 2002

posted posted 05-28-2002 17:17

Hello,

Here's my dilemna: I do some photography for "glossary" items in books, which end up being normal, everyday items (thermometer, camera, book, people, etc...) against a perfectly white background.

Many times, these are slightly off-white objects against slightly white backgrounds, with some unavoidable shadows from the photography. What's the best way of making a perfect selection to mask the background into a perfect white backdrop (FFFFFF or 255, 255, 255) without the problems of anti-aliasing?

Third party filters? Done by hand on the pixel level? Another method?

Thanks!!!



Scott99999
Bipolar (III) Inmate

From:
Insane since: Mar 2002

posted posted 05-28-2002 17:21

Here's an example (not mine....just pulled from some random web page)



Only I need it to be perfect!

Jestah
Maniac (V) Mad Scientist

From: Long Island, NY
Insane since: Jun 2000

posted posted 05-28-2002 17:21

I think Steve wrote a tutorial for something along those lines over Gurus Network. Why don't ya head over there?

-Jestah
Cell 277

docilebob
Maniac (V) Mad Scientist

From: buttcrack of the midwest
Insane since: Oct 2000

posted posted 05-29-2002 03:01

One way is to copy the original, and desautrate it.
Select all>>copy>>paste in a new channel.
Guassian blur slightly, adjust levels. ( pull the sliders towards the middle until you have a nice clean edge)
you can check by clicking on the RGB *eye*con to toggle between the channel and the full color.
Possibly touch it up with the paintbrush, ALT+click the channel to select it.
Back to the original layer, click the layer mask icon. Invert if necessary.

If after all this, you still have a slight halo, select the mask, go FILTERS>>OTHER>>Minimum, set it at 1 px, click OK.





Cell245

Slime
Lunatic (VI) Mad Scientist

From: Massachusetts, USA
Insane since: Mar 2000

posted posted 05-29-2002 03:22

Somewhere in the menus is a "remove white matte" option, that you can use after you cut out the image based on the amount of white...

synax
Maniac (V) Inmate

From: Cell 666
Insane since: Mar 2002

posted posted 05-29-2002 05:32

You could also use Photoshop's extraction filter.

Scott99999
Bipolar (III) Inmate

From:
Insane since: Mar 2002

posted posted 05-29-2002 07:55

Thanks...

Actually....Docilebob...now you need to go the OTHER direction, and turn that image you now have into the first!!!!

That's what I have to do with all of mine...

docilebob
Maniac (V) Mad Scientist

From: buttcrack of the midwest
Insane since: Oct 2000

posted posted 05-30-2002 02:32

Scott: Huh ?

Slime : It`s Layer>>matting>>defringe, remove white matte, remove black matte.



Cell245

Emperor
Maniac (V) Mad Scientist with Finglongers

From: Cell 53, East Wing
Insane since: Jul 2001

posted posted 05-30-2002 02:40

Scott99999: If I understand you correctly (a better example might have got you the answer more quickly) then Jestah's answer still stands but more specifically Steve's excellent (no worldclass) tutorial here seems to be what you are after:
www.gurusnetwork.com/tutorials/photoshop/replacebg.html

___________________
Emps

FAQs: Emperor

Scott99999
Bipolar (III) Inmate

From:
Insane since: Mar 2002

posted posted 05-31-2002 06:11

Got it. Thanks.

DocileBob: I was teasing that you inserted a background into the photo. What I normally have to do, over and over, is *remove* the background from the photo. So I was just joking - suggesting you had to now show us your mad skillz to make your image background-free.



WebShaman
Maniac (V) Mad Scientist

From: Happy Hunting Grounds...
Insane since: Mar 2001

posted posted 05-31-2002 08:12

Just forget what I just posted...I already know the answer...*kicks self* Man, I'm doing a lot of that lately *sigh*


[This message has been edited by WebShaman (edited 05-31-2002).]

docilebob
Maniac (V) Mad Scientist

From: buttcrack of the midwest
Insane since: Oct 2000

posted posted 06-01-2002 02:40

Oh, I get it ---DUH---

That`s funny ,cause the first time I saved it , it was a transparent gif, and you couldn`t tell whether there was a halo, or not..so I threw a bg in so you could see the edges. hehe.

Anyway the channels thing is pretty flexible. ( you also always have the selection, too ) Hope it helped.


Cell245

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