4 ms·
There is a very good signal theoretic framework to discuss this. You can start reading from example Alvy Ray Smith's "A pixel is not a little square" http://al
by fsloth 4y ago
There is a very good signal theoretic framework to discuss this.
You can start reading from example Alvy Ray Smith's "A pixel is not a little square" http://alvyray.com/Memos/CG/Microsoft/6_pixel.pdf http://alvyray.com/Memos/CG/Microsoft/6_pixel.pdf
But in the end, the sampling kernel you choose to sample your line, and, what sort of geometric primitive your line is in the first place, defaults back to matters of taste so there is a very good theoretical basis for discussing all of this, but, there is no ultimate absolutely correct answer that it will provide.
- wnoise 4y agoThe signal theoretic framework depends on bandwidth limitations that often don't hold for signals we want to produce. Sharp lines and boundaries are reasonable things to want. I'd say the sampling kernels aren't fully matters of taste, but matters of the display or sampling technology instead. Pixels on CRTs are indeed not little squares, but pixels on anything else pretty much are -- though they can be non-contiguous squares, with different patterns for different colors, even, which eliminates any simplicity that the little-square picture intuitively captures. Fortunately, all this starts to matter less and less as pixel size and spacing gets smaller and smaller.