Comments on: Challenges http://www.nesota.com/blog/archives/32 Entrepreneurship in the North Star State Tue, 13 Jul 2010 03:17:05 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Jeff http://www.nesota.com/blog/archives/32/comment-page-1#comment-30 Jeff Tue, 22 Sep 2009 21:33:36 +0000 http://www.nesota.com/blog/?p=32#comment-30 Photoshop's "sharpness" tools don't really deblur images; rather, they increase the local contrast. They are of little use for dealing with anything other than minor blurs, and they are virtually useless when blur caused by motion is anything but a straight line. What's more, the optimal amount of "sharpness" provided by the Photoshop tools is tied to the desired output medium. Images sharpened for use on screen will often appear to have halos or other artifacts when printed on paper. In short, Unsharp Mask and Smart Sharpen serve only to increase the acutance of an image. The tool I'm developing will actually remove the blur, revealing the latent sharp image. Photoshop’s “sharpness” tools don’t really deblur images; rather, they increase the local contrast. They are of little use for dealing with anything other than minor blurs, and they are virtually useless when blur caused by motion is anything but a straight line. What’s more, the optimal amount of “sharpness” provided by the Photoshop tools is tied to the desired output medium. Images sharpened for use on screen will often appear to have halos or other artifacts when printed on paper.

In short, Unsharp Mask and Smart Sharpen serve only to increase the acutance of an image. The tool I’m developing will actually remove the blur, revealing the latent sharp image.

]]> By: alex http://www.nesota.com/blog/archives/32/comment-page-1#comment-29 alex Tue, 22 Sep 2009 06:03:08 +0000 http://www.nesota.com/blog/?p=32#comment-29 so uh, is it going to be better than the photoshop one? i think you're going to need human input to distinguish yourself from automatic tools. i'm guessing something like a RAW interpolation UI. so uh, is it going to be better than the photoshop one? i think you’re going to need human input to distinguish yourself from automatic tools. i’m guessing something like a RAW interpolation UI.

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