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Re: [OM] Halo/border artifacts [was More Conversions]

Subject: Re: [OM] Halo/border artifacts [was More Conversions]
From: Bob Whitmire <bwhitmire@xxxxxxxxxxxxxx>
Date: Sat, 17 Sep 2011 15:35:27 -0400
On Sep 17, 2011, at 3:07 PM, Moose wrote:

> On 9/17/2011 8:57 AM, Bob Whitmire wrote:
>> CS5 has a new refine edge box that bears digging into. The edge detection 
>> and smart radius box is damn near worth the price of the upgrade. Especially 
>> if you do a lot of compositing.
> 
> Hmmm, edge detection and/or smart radius may make selection of foliage better 
> for making a sky mask, as I was just 
> describing.

There are a couple of other tricks, too, mostly from the wild-hair school of 
portrait photography. I haven't tried them yet, but they involve odd blend 
modes and such, but do a good job of hiding the kind of effects that a blue sky 
might produce in the tops of trees and such. Mostly the tricks are used by 
compositors in removing a subject from one background and placing it on another.


> 
>> I only say "damn near" because the "content-aware fill" _is_ worth the price 
>> of the upgrade.<g>  I've beeb revisiting a few images from a ways back, and 
>> I've found instances where content-aware fill has done in a few seconds what 
>> I spent much more time carefully cloning.
> 
> Often sheer magic, sometimes frustrating. When it goes bad, fixating on some 
> inappropriate source, I still sometimes 
> can't find a solution.
> 
> The two tools work together well. I often use Refine Edge=>Shift edge and 
> =>Feather to expand and blend the edge of a 
> selection for Content Aware Fill.
> 
> With the Smart Healing Brush Tool, Content Aware and Proximity Match each 
> have their place, depending on the content.

Yep. I hit some content-aware roadblocks, but by and large it's a real winner. 
I find it especially useful when I've fixed perspective in a wide angle shot. 
When then saved to a .psd file, the fixed distortion image has a nice gray area 
where the vertical or horizontal fix has been made. The old way was to crop the 
image, which meant you might as well have used that 35mm lens rather than the 
24. With content aware, you use the magic want, select the gray, and 
fill>content aware. There's usually a faint line where the filling occurred, 
but that's an easy fix with the healing brush.

http://www.bobwhitmire.com/newharbor.html

The last image was done this way. I used a 21mm lens, but had to tilt up 
slightly to get all of the rainbow. Content-aware fill took care of the mess I 
made when straightening the perspective. At least I think it did. Now that I've 
focused Moosevision on it, I wonder. <g>


--Bob

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