Revising for the <a href="http://www.dcs.gla.ac.uk/courses/teaching/level3/modules/gmm3.html">Graphics & Multimedia</a> (GMM) exam can be a serious pain.
Thankfully, <a href="http://www.mrry.co.uk/">Derek</a> is on hand with a useful memory aid.
Derek: | i have an mnemonic for a part of gmm, that you might find useful |
Matt: | fire away |
Neil: | share with the class |
Derek: | you know when you're looking at fishnet porn on the interweb? |
Matt: | I'm going to say "sure" in order to move this on. |
Neil: | no * |
Neil: | *yes |
Derek: | and you click to see the full-size picture, but the browser does that shitty thing of resizing it to fit? |
Neil: | yup |
Derek: | and you look at her legs, and something seems wrong? |
Derek: | that's the nyquist sampling limit. |
Matt: | right |
Derek: | either that, or you're looking at cripple porn. and that's not my bag |
Matt: | so the take-home part of that is: resized-to-fit fishnet porn leg distortion = nyquist sampling limit |
Derek: | yep |
Matt: | got it. |
Derek: | you're seeing spurious low spatial frequencies |
Neil: | interesting |
Derek: | due to aliasing |
Derek: | it's a pain |
Derek: | i can't look at it now without thinking of gmm :/ |
Matt: | it must ladder those fishnets something awful too. |