Comments on: Grayscale for the Greater Good http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/ personal weblog of a mac geek Mon, 08 Sep 2008 07:33:42 +0000 http://wordpress.org/?v=2.5 By: Elliott Harris http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-3224 Elliott Harris Fri, 19 Jan 2007 03:01:15 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-3224 These are really neat, I'm not huge on CI, but this was a good introduction. Nice to see other Cocoa developers in the Dallas area. :) These are really neat, I’m not huge on CI, but this was a good introduction. Nice to see other Cocoa developers in the Dallas area. :)

]]> By: Scott Stevenson http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2840 Scott Stevenson Sun, 14 Jan 2007 15:34:39 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2840 <i>I don’t get why Apple’s using their weird CIKernel instead of NVidia’s CG</i> I'm not fluent in shading languages, but I think Apple would like their API to be abstracted from any one video card (or processor). I don’t get why Apple’s using their weird CIKernel instead of NVidia’s CG

I’m not fluent in shading languages, but I think Apple would like their API to be abstracted from any one video card (or processor).

]]> By: Joachim Bengtsson http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2828 Joachim Bengtsson Sun, 14 Jan 2007 12:49:31 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2828 I don't get why Apple's using their weird CIKernel instead of <a href="http://en.wikipedia.org/wiki/Cg_programming_language" rel="nofollow">NVidia's CG</a>. I don’t get why Apple’s using their weird CIKernel instead of NVidia’s CG.

]]> By: Peter Hosey http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2757 Peter Hosey Sun, 14 Jan 2007 05:26:17 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2757 If you'd like (or you need) to accomodate people who don't have a Core-Image-capable GPU, you can <a href="http://boredzo.org/blog/archives/2006-01-11/on-writing-image-units" rel="nofollow">write an executable Image Unit</a>. Executable Image Units run on the CPU if the GPU can't do the job, so they'll work on any G4 or better. On the other hand, while you're writing and testing the Image Unit (and before you follow the instructions in that post), you can use <a href="http://developer.apple.com/softwarelicensing/agreements/imageunits.html" rel="nofollow">Apple's Image Unit validation tool</a>. If you’d like (or you need) to accomodate people who don’t have a Core-Image-capable GPU, you can write an executable Image Unit. Executable Image Units run on the CPU if the GPU can’t do the job, so they’ll work on any G4 or better.

On the other hand, while you’re writing and testing the Image Unit (and before you follow the instructions in that post), you can use Apple’s Image Unit validation tool.

]]> By: Scott Stevenson http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2753 Scott Stevenson Sun, 14 Jan 2007 04:08:06 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2753 More of this. More of this.

]]> By: Matt Schinckel http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2748 Matt Schinckel Sun, 14 Jan 2007 02:14:45 +0000 http://www.losingfight.com/blog/2007/01/13/grayscale-for-the-greater-good/#comment-2748 I didn't really think too much about greyscale conversion until I started playing with Adobe Lightroom, but it's got the amazingly cool feature of being able to alter the different colour channels intensity when converting to grey. That means you can change the relative brightness of different areas/objects within the photograph, and so on. It's actually rather amazing how different one photo can look just by altering the channels differently. I didn’t really think too much about greyscale conversion until I started playing with Adobe Lightroom, but it’s got the amazingly cool feature of being able to alter the different colour channels intensity when converting to grey. That means you can change the relative brightness of different areas/objects within the photograph, and so on.

It’s actually rather amazing how different one photo can look just by altering the channels differently.

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