Talk:RGBA color space

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This page should be merged with ARGB, as the only real difference between the two is the order of the components. --InvaderJim42 01:19, 16 June 2006 (UTC)

[edit] Illustration?

I think an illustration could be helpful here to grasp the concept only by a quick glance. Perhaps something like a regular RGB color wheel overlayed on a square grid (to illustrate the background shining through), but with an alpha channel increasing in value as you move farther out from the center of the wheel. The picture title could then tell it's an RGB color wheel with increasing alpha values as you move from its center. Just an idea. :-) It could be represented as a PNG since it supports alpha channels. Internet Explorer 7 will finally also support such images to reduce the problems for the vast majority of the web viewing such images. -- Northgrove 23:42, 5 October 2006 (UTC)

[edit] Really necessary?

Is this page really necessary? The topic is already discussed in the RGB article. Also, this article should be renamed 'RGBA color model', since we're not dealing with real light. Also, the RGB article states that RGBA is not a distinct color model. Alpha is also not a color. -SharkD 16:35, 26 October 2006 (UTC)

I think it's necessary, but I think it's wrongly categorized; RGBA/ARGB aren't color spaces, just a modifier to the RGB color-space to add blending; I'm not sure how to define that in words, but ARGB/RGBA would be the full article name IMO. I'm also fixing the article to include the difference between pre- and post- multiplied alpha. 70.35.227.160 17:18, 10 January 2007 (UTC)