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Forums > Digital Art and Retouching > Automate isolation of person on white Search   Reply
Photographer
poiter
Posts: 255
Salt Lake City, Utah, US


This is an image of a man standing in a white space. https://dl.dropboxusercontent.com/u/272 … 3-5369.jpg

Most of the white space is already a 'pure white' that is RGB 255,255,255, however some of the space is not yet a pure white. I'm trying to work out some way to automate the isolation process. I process thousands of these images a year so doing it all manually takes up a lot of time. Since I isolate so many images by hand I already know quite well how to isolate an image. What I don't know well is how to setup an automation photoshop action or script to have it do most if not all of the work for me. The other problem I run into is that there will be slight changes in lighting from photoshoot to photoshoot. So when I isolate by hand I adapt where need be, but I will assume this will pose a challenge to automation software.

I am aware the are isolation software from ononesoftware.com etc, but those take a ridiculous amount of time to use. By hand I can isolate in photoshop each image in probably 30 seconds or less. Nevertheless I'd like to work out how to have software do it all or mostly do it all in a second or two.
Jul 08 13 09:45 am  Link  Quote 
Photographer
C.C. Holdings
Posts: 590
New York, New York, US


in photoshop you can use the color range tool to do most of the work for you

Select > Color Range

if this was part of an action it will store the value of the color range configurations, so you will be able to use it in similar photos

with this method you will still have to manually remove the white parts of the subject from the selection

but this is where it is great to make selections their own layer mask, so incorporate that into your action and you will be able to "erase" parts of the selection using a black/white brush on the selection layer
Jul 08 13 09:55 am  Link  Quote 
Photographer
Motordrive Photography
Posts: 2,080
Lodi, California, US


it is already so close, depending what it is going on you can
use the blend if sliders. the quick select is also just as the
name implies, very quick.
Jul 08 13 10:04 am  Link  Quote 
Photographer
Kent Art Photography
Posts: 2,545
Ashford, England, United Kingdom


It would surely need to be a process which eliminated the greys you don't want while keeping the greys you do.  I'm thinking of the shadows at the person's feet in the example you linked to, because you need something to 'anchor' the people to, or they'll appear to be floating in the air.
Jul 08 13 11:24 am  Link  Quote 
Retoucher
Peano
Posts: 4,106
Lynchburg, Virginia, US


poiter wrote:
Nevertheless I'd like to work out how to have software do it all or mostly do it all in a second or two.

I have an action that will yield this in one click on the image you posted. Nothing fancy, just a couple of calculations commands and a levels adjustment.

Obviously you'd have to do a few edges by hand (highlight on top of shoe, white collar), and you can just paint out the facial features and other interior light areas with a paint brush.

https://www.dropbox.com/s/1ehnavmet1atpjo/Automask.atn

EDIT: This version works a little better and ends by turning on quickmask mode, selecting the brush tool with hard edge, and setting foreground color to black/100%, so you're ready to use quickmask on the image to fix edges where needed.

https://www.dropbox.com/s/5bo5s3gkpljn300/Automask2.atn


http://img812.imageshack.us/img812/9059/n3ag.jpg

Jul 08 13 12:06 pm  Link  Quote 
Photographer
poiter
Posts: 255
Salt Lake City, Utah, US


Thanks everyone for your input. I had a go with all your suggestions, some of which I've tried previously. Nothing stood out as being quicker than using the magic wand and selectively choosing different areas. It had just dawned on me just now that I can solve a lot of my problems by simply adding more plexiglass to the ground. Also I can add more care with making sure my lights don't start blowing out the shoes. Then I think using the magic wand 'could' be pretty straight forward.
Jul 08 13 01:41 pm  Link  Quote 
Retoucher
Rpixretouching
Posts: 354
Perris, California, US


nice info here.
Jul 08 13 04:34 pm  Link  Quote 
Photographer
Bernard Wolf
Posts: 15
Santa Monica, California, US


Jul 09 13 10:54 am  Link  Quote 
Photographer
Naked Hobby
Posts: 27
Hamilton, Ontario, Canada


poiter wrote:
This is an image of a man standing in a white space. https://dl.dropboxusercontent.com/u/272 … 3-5369.jpg

Most of the white space is already a 'pure white' that is RGB 255,255,255, however some of the space is not yet a pure white. I'm trying to work out some way to automate the isolation process. I process thousands of these images a year so doing it all manually takes up a lot of time. Since I isolate so many images by hand I already know quite well how to isolate an image. What I don't know well is how to setup an automation photoshop action or script to have it do most if not all of the work for me. The other problem I run into is that there will be slight changes in lighting from photoshoot to photoshoot. So when I isolate by hand I adapt where need be, but I will assume this will pose a challenge to automation software.

I am aware the are isolation software from ononesoftware.com etc, but those take a ridiculous amount of time to use. By hand I can isolate in photoshop each image in probably 30 seconds or less. Nevertheless I'd like to work out how to have software do it all or mostly do it all in a second or two.

For $99 bucks you can learn all about automation....

http://www.creativelive.com/courses/pho … dave-cross

Jul 11 13 03:39 am  Link  Quote 
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