Sharpening a high-frequency image


show more Sharpening a high-frequency image provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS5 One-on-One: Mastery show less
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Sharpening a high-frequency image

In the next couple of exercises, we are going to use Smart Filters to sharpen a high-frequency image, that is, an image that has rapid luminance transitions inside of it, and then we are going to turn around and quell the noise that rises up when we apply a sharpening filter. I am working inside of an image that I shot last year called Avignon cathedral.jpg, and if you zoom in on this image, you are going to see that we do have a fair amount of noise going on, in these windows for example, it's most evident.

We have a fair amount of luminance noise that is variations between neighboring pixels where the luminosity is concerned, and then we also have an awful lot of color noise going on, random variations and colors between neighboring pixels. Now normally, I should say, if this were a static adjustment that we are about to apply, we would have to get rid of the noise before we apply the sharpening filter, because otherwise, you'll get rid of your sharpening, if you follow up shar...

Sharpening a high-frequency image
Video duration: 7m 46s 20h 1m Advanced

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Sharpening a high-frequency image provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS5 One-on-One: Mastery

Subjects:
Design Photography
Software:
Photoshop
Author:
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