Extracting luminance information


show more Extracting luminance information provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS5 One-on-One: Advanced show less
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Extracting luminance information

In this exercise, we're going to see yet another way to use this Grayscale command right there to extract a black and white image from a full color photograph, but this time as opposed to extracting that black and white image from an RGB photograph, we're going to take advantage of an alternate color model known as Lab. Now, I've gone ahead and saved our progress so far. First, there is this image called Grayscale composite.jpg, which is the grayscale fusion of all three of those color channels into one.

The next image is called Blue to gray.jpg, and that's that Blue Channel from the RGB image, we just went ahead and abandoned the Red and Green Channels in order to get this effect here. And then we also have our original Agrarian gothic.jpg file. And what I'm going to do here is switch to the original color image and then go up to Arrange icon and click on Consolidate All, or if you loaded dekeKeys, you've got a keyboard shortcut, Ctrl+Shift+A, Command+Shift+A on ...

Extracting luminance information
Video duration: 7m 37s 26h 24m Intermediate Updated Aug 31, 2010

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Extracting luminance information provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS5 One-on-One: Advanced

Subjects:
Design Photography
Software:
Photoshop
Author:
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