Pixelation

General => General Discussion => Topic started by: helloimpoor on March 31, 2006, 07:01:43 pm

Title: Pixel talk
Post by: helloimpoor on March 31, 2006, 07:01:43 pm
i'm new and therefore i am a bit lost in all this pixel language. please can people post here the 'pixel word' and its meaning for us lesser mortals. Some examples of things i want to know are 'sprites', 'dithers' and 'pixel dumps' etc...
Title: Re: Pixel talk
Post by: Overkill on March 31, 2006, 09:00:32 pm
Wikipedia knows all.

Pixel - "A pixel (a portmanteau of picture element) is one of the many tiny dots that make up the representation of a picture in a computer's memory. Usually the dots are so small and so numerous that, when printed on paper or displayed on a computer monitor, they appear to merge into a smooth image."

Dither - "Dithering is a technique used in computer graphics to create the illusion of color depth in images with a limited color palette (quantization). In a dithered image, colors not available in the palette are approximated by a diffusion of colored pixels from within the available palette. The human eye perceives the diffusion as a mixture of the colors within it. Dithering is analogous to the halftone technique used in printing. Dithered images, particularly those with relatively few colors, can often be distinguished by a characteristic graininess, or speckled appearance."

Sprite - "In computer graphics, a sprite is a two-dimensional image or animation that is integrated into a larger scene."

Pixel Dump - ...Well okay, it doesn't know everything.  Not in the wikipedia, but I'm pretty sure this term denotes sketches and random artwork done using a pixelling technique to draw them. "Dump" probably connotes they don't necessarily reflect the artist's best work, and display their skill in its unpolished form.
Title: Re: Pixel talk
Post by: Ryumaru on March 31, 2006, 09:23:41 pm
anti-aliasing or aa: a tecnique used to smooth out graphics. it means to take the pixels off the grid( i think???)
Title: Re: Pixel talk
Post by: Filax_666 on March 31, 2006, 09:32:41 pm
Actually, I think aaing is when you blend two colours together in order to improve the smoothness of the piece (I think this is wahat ryumaru meant).
Title: Re: Pixel talk
Post by: Blick on April 01, 2006, 01:29:03 am
Anti-aliasing. (http://en.wikipedia.org/wiki/Anti-aliasing)
Title: Re: Pixel talk
Post by: robalan on April 02, 2006, 01:28:32 am
The Wiki (http://www.wayofthepixel.net/pixelation/pixipedia/index.php?title=Main_Page")
Title: Re: Pixel talk
Post by: Ryumaru on April 02, 2006, 01:33:12 am
Actually, I think aaing is when you blend two colours together in order to improve the smoothness of the piece (I think this is wahat ryumaru meant).

i know that much but aliasing is supposedly " alighning the pixels to the grid" or something to that effect and anti aliasing un-grids the pixels.
Title: Re: Pixel talk
Post by: Radioactivity on April 10, 2006, 12:12:26 pm
you can't un-grid the pixels, by using aa it creates an illusion of smoothness, all the pixels are still in the grid.
Title: Re: Pixel talk
Post by: miascugh on April 10, 2006, 02:20:10 pm
you can't un-grid the pixels, by using aa it creates an illusion of smoothness, all the pixels are still in the grid.

sorry, but.. duh

i like ryumarus explanation. aa is like transferring contrasting borders, which actually are running along sub-pixel level lines, into the pixelgrid imposed by the screen. it's all about estimating the percentages of space the contrasting colors in question would use up of each pixel, thus giving the 'formula' or mixing ratio for this pixel's color
Title: Re: Pixel talk
Post by: Helm on April 10, 2006, 05:02:23 pm
Just remember a subpixel is always a bigger pixel than a regular pixel :P
Title: Re: Pixel talk
Post by: AlexHW on April 10, 2006, 05:25:44 pm
A subpixel is when one intentially implies pixels between pixels, and is seen clearly in animation where pixels interact and change accordingly to represent the given/hidden detail more fully.
Atleast that is how I understand it. I'm sure Camus can explain it better.
Title: Re: Pixel talk
Post by: Helm on April 10, 2006, 05:40:22 pm
They're fat and a bit oily. And they cost a lot.
Title: Re: Pixel talk
Post by: miascugh on April 10, 2006, 05:45:06 pm
yes? subpixel very much sounds like below pixel level for me.. whatever, what i mean is that pixels don't allow 100% accuracy in displaying curves, them being infinitely thin,.. blabla you get the idea :)
Title: Re: Pixel talk
Post by: Ryumaru on April 10, 2006, 06:10:50 pm
you can't un-grid the pixels, by using aa it creates an illusion of smoothness, all the pixels are still in the grid.
i say it in more of a figurative way than literal.
Title: Re: Pixel talk
Post by: AlexHW on April 10, 2006, 08:16:28 pm
yeah, curves are pretty figurative..
You can say a curve is more a motion, pattern/path, or general shape..
You can use any number of objects to create a curve includeing pixels.
Title: Re: Pixel talk
Post by: flaber on April 12, 2006, 08:59:09 pm
yeah, curves are pretty figurative..
You can say a curve is more a motion, pattern/path, or general shape..
You can use any number of objects to create a curve includeing pixels.

thats geniouse.
never thought of it like that. I always saw a curve as a path or line, opposed to a pattern.
:)