Forum: Poser - OFFICIAL


Subject: Why do background images end up pixelated?

nontroppo opened this issue on Nov 19, 2004 ยท 18 posts


gps posted Sat, 20 November 2004 at 1:38 AM

EnglishBob - strangely enough, background colour does seem to matter even when the background is going to be masked out. Poser appears to take this colour into account when it anti-aliases the edges of the figure. It's a very subtle effect, and you may never notice it (especially if you use Poser's default greyish background), but I was rendering-out some animation frames using a high contrast magenta background, and when the resulting figure was composited onto a dull, monotone background image he looked like he had a faint pink glow all round him.

Of course, it might just be the way PSP7 handles alpha channels ;) but thinking about it, anti-aliasing works by averaging-out high contrast areas of colour, so Poser has to work off something in order to apply AA to the edge of the rendered figure. Even if that 'something' is a background colour that isn't going to be part of the final render.

Message edited on: 11/20/2004 01:39