Any tricks to make this background true white?

Started Jan 31, 2013 | Questions
dbooksta
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Any tricks to make this background true white?
Jan 31, 2013

If I use a lasso select then when I fill the background white it leaves striking edges in the shadows of the objects.

If I try to color-correct or play with exposure it also affects the highlights of the bullets that have the same tones as the background.

Any tips greatly appreciated!

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Adventsam
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

dbooksta wrote:

If I use a lasso select then when I fill the background white it leaves striking edges in the shadows of the objects.

If I try to color-correct or play with exposure it also affects the highlights of the bullets that have the same tones as the background.

Any tips greatly appreciated!

Extract the guns and amo onto a layer and add white colour layer behind, easy

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gwlaw99
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

What software are you using.  Different software has different extraction tools. Lasso isn't going to cut it.

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suddie1215
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

You're using the wrong tool to select.  In Photoshop you'd need to use a more advanced selection tool like Color Range or Channels to select the white background.  Then you can add a Levels or Curves adjustment layer to push the whites to pure white (255) and invert the selection to add a mask that protects the  guns and ammo from any adjustment.  It also should be noted that the background is unevenly lit so pushing it to pure white will blow out some portions.

dbooksta wrote:

If I use a lasso select then when I fill the background white it leaves striking edges in the shadows of the objects.

If I try to color-correct or play with exposure it also affects the highlights of the bullets that have the same tones as the background.

Any tips greatly appreciated!

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Adventsam
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Re: Any tricks to make this background true white?
In reply to Adventsam, Jan 31, 2013



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Jack Sofield
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

My effort.  Topaz Remask plus a lot of hand work. Reversed selection and flooded with white. Considerable brush and cloning to get inbetween rounds. Not perfect perhaps, but fun nevertheless. Thanks for the challenge.



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drh681
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

In the levels dialog, choose the white point eyedropper. click in the lower right corner.

then you need to use the shadow/highlight dialog to bring the tones of the pistols back down.

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mikes
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

I just used Vertus Fluid Mask, then a few touch-ups afterwards around the bullets to keep a bit of shadow. All done with Corel.



dbooksta wrote:

If I use a lasso select then when I fill the background white it leaves striking edges in the shadows of the objects.

If I try to color-correct or play with exposure it also affects the highlights of the bullets that have the same tones as the background.

Any tips greatly appreciated!

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Babine
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Re: Any tricks to make this background true white?
In reply to dbooksta, Jan 31, 2013

And yet another way ..

A - your original JPG

B - the original into ACR. The results of sampling various areas of the BG with the white balance tool.

C - in CS6, duplicate of B; set a copy of A over-top, applied a hide-all mask and added back some colour to the rounds with a soft white brush; merged down; duplicated the layer; used the quick selection tool to get an alpha channel of just the sidearms; applied Shadows/Highlights to enhance the detail universally and then the alpha channel and a mask to restrict the effect just to the sidearms; sharpened selectively.

-

Cheers.
Gary
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GCam
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

try selective color adjustment layer>select white>move black slider to left.  gc

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dbooksta
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Re: Any tricks to make this background true white?
In reply to suddie1215, Feb 1, 2013

suddie1215 wrote:

You're using the wrong tool to select. In Photoshop you'd need to use a more advanced selection tool like Color Range or Channels to select the white background. Then you can add a Levels or Curves adjustment layer to push the whites to pure white (255) and invert the selection to add a mask that protects the guns and ammo from any adjustment. It also should be noted that the background is unevenly lit so pushing it to pure white will blow out some portions.

(Note that I actually do want to blow out the whole background to pure white.)

The results of your process look great.  I tried to follow your instructions in Photoshop but I'm too much of a novice.  If you have the patience and could spell out the process you followed (including behind which tool and/or sub-sub-menu each step is hidden) I would be be thrilled.

In any case your results set a superior example of what can be done in this situation, and I thank you for that!

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hedwards
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

This is an easy one. The only white I see in the entire image is the background. Neither the gun nor the ammo seems to have any white.

So, just copy the layer and apply threshold to the new layer. You should see in the histogram a place where things are whiter than the highlights on everything except the background. Choose somewhere that only makes the bullets and gun black.

Then just use the select by color range and make sure that it will select all the black in the image. Cut the black away and you should be left with an image that has the brightest possible background in about 3 minutes tops.

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dbooksta
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Re: Any tricks to make this background true white?
In reply to Adventsam, Feb 1, 2013

Adventsam wrote:

Extract the guns and amo onto a layer and add white colour layer behind, easy

Using the Magic Wand to extract them this approach either leaves a stark shadow around the guns, or if pushed to snug up to the guns begins to encroach on the ammo.

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dbooksta
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Re: Any tricks to make this background true white?
In reply to Babine, Feb 1, 2013

Babine wrote:

And yet another way ..

A - your original JPG

B - the original into ACR. The results of sampling various areas of the BG with the white balance tool.

C - in CS6, duplicate of B; set a copy of A over-top, applied a hide-all mask and added back some colour to the rounds with a soft white brush; merged down; duplicated the layer; used the quick selection tool to get an alpha channel of just the sidearms; applied Shadows/Highlights to enhance the detail universally and then the alpha channel and a mask to restrict the effect just to the sidearms; sharpened selectively.

-

Cheers.
Gary
http://forums.dpreview.com/Galleries/8298604696/photos
http://www.pbase.com/pictek

Excellent results -- thanks!  But sounds way beyond my capabilities with CS6 at this point!

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dbooksta
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Re: Any tricks to make this background true white?
In reply to hedwards, Feb 1, 2013

hedwards wrote:

This is an easy one. The only white I see in the entire image is the background. Neither the gun nor the ammo seems to have any white.

So, just copy the layer and apply threshold to the new layer. You should see in the histogram a place where things are whiter than the highlights on everything except the background. Choose somewhere that only makes the bullets and gun black.

Then just use the select by color range and make sure that it will select all the black in the image. Cut the black away and you should be left with an image that has the brightest possible background in about 3 minutes tops.

That almost works, except that the bullets have a few highlights that are actually whiter than the background, which is what makes this (as far as I knew) much harder....

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hedwards
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

Well, in that case, you break out the lasso or paint those in black on that black and white layer. Or you set the magic wand to only accept contiguous areas when doing the selection.

If you just want to color balance the white background, you can copy the b&W layer and use it as the mask for a application of levels. Just copy it into the layer mask should work. And use that grey eyedropper to balance the color or move the middle triangle till you like the result.

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Allen Gerdes
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Re: Any tricks to make this background true white?
In reply to hedwards, Feb 1, 2013

I would like to see your results using this method.

Regards....Allen

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Adventsam
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

dbooksta wrote:

Adventsam wrote:

Extract the guns and amo onto a layer and add white colour layer behind, easy

Using the Magic Wand to extract them this approach either leaves a stark shadow around the guns, or if pushed to snug up to the guns begins to encroach on the ammo.

There's no shadow in my attempt? it was quick and dirty and I could tidy it up but it's easy to do.

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SamanthaN
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

I would mask it using a path and then fill with white or use a guy like clippingshop.com to take care of it for you.

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GCam
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Re: Any tricks to make this background true white?
In reply to dbooksta, Feb 1, 2013

select white with magic wand, including outer shadows>invert selection>image>apply image>

rgb>multiply>opacity at 50%>flatten>invert selection>edit>fill>white.  gc

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