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[OM] Re: USM test re PWP/PS is up

Subject: [OM] Re: USM test re PWP/PS is up
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Sun, 08 Feb 2004 15:25:48 -0500
I sent the following message to Tris earlier with image attached.  I 
assume he will post it with the others on his site.
----------------
Instead of dealing with another image I have simply taken your color 
corrected version of the sample image of the bird from your site and run 
it through PWPro's advanced sharpen with parameters radius = 2 and 
amount = 93%.  The histogram settings are the defaults determined by PW 
Pro so I didn't have to do any more fiddling than I would with ordinary 
unsharp masking.  The image (AdvSharpPWP2x.jpg) is attached.

As you can see, it has very nearly duplicated the image you produced 
with Fred Miranda's IS action.  In particular, the smooth green 
background is still smooth without the mottling introduced by more 
conventional sharpening algorithms.

Chuck Norcutt

Tris Schuler wrote:

> Chuck, please send along a test image and another with this PWP filter 
> applied to that test image. I'll then run IS on the sample and mount the 
> two resultant sharpened images (including your PWP job) as a couple of A-Bs 
> per the USM test on my site.
> 
> Within certain bounds (it's impossible to be sure the "same" degree of 
> treatment has been applied, you realize that of course) we'd then know more 
> about it.
> 
> On its face that sounds more refined than what I saw in the PSP v8 demo, 
> which, as I recall, was basically the same filter used for v7 of that product.



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