Dark Bit Factory & Gravity

GENERAL => General chat => Topic started by: Pixel_Outlaw on February 15, 2008

Title: dithering...and you!
Post by: Pixel_Outlaw on February 15, 2008

I want to learn everything I can about dithering in the image processing sense. Are there any demos that do dithering with just a few colors in realtime?

Title: Re: dithering...and you!
Post by: va!n on February 15, 2008

just check this out:
http://en.wikipedia.org/wiki/Dither (http://en.wikipedia.org/wiki/Dither)
http://en.wikipedia.org/wiki/Floyd-Steinberg_dithering (http://en.wikipedia.org/wiki/Floyd-Steinberg_dithering)

http://www.flipcode.com/archives/Image_Dither.shtml (http://www.flipcode.com/archives/Image_Dither.shtml)
http://www.whisqu.se/per/docs/graphics30.htm (http://www.whisqu.se/per/docs/graphics30.htm)
http://www.codeproject.com/KB/GDI-plus/Image_Processing_Lab.aspx (http://www.codeproject.com/KB/GDI-plus/Image_Processing_Lab.aspx)
http://www.codeproject.com/KB/graphics/cximage.aspx?fid=2472&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=2413774
 (http://www.codeproject.com/KB/graphics/cximage.aspx?fid=2472&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=2413774)

Title: Re: dithering...and you!
Post by: Shockwave on February 16, 2008

There are some.
I remember one on the Amiga by Digital that did vectors with dithering.

As far as I could tell, it was just a gourad routine with a limited colour palette though. It wouldn't be too hard to re-create it.

Title: Re: dithering...and you!
Post by: hellfire on February 26, 2008

Gateways / Trauma (http://www.pouet.net/prod.php?which=295) had an option to quantize & dither from hicolor to mode13.
never found that very attractive though...

Title: Re: dithering...and you!
Post by: Shockwave on February 28, 2008

Quote from: hellfire on February 26, 2008

Gateways / Trauma (http://www.pouet.net/prod.php?which=295) had an option to quantize & dither from hicolor to mode13.
never found that very attractive though...

That does seem like a strange option to add to a demo like that too.

Title: Re: dithering...and you!
Post by: Pixel_Outlaw on February 28, 2008

Yes, it does seem odd. Most of the dithering I've seen in 3D was done for "screendoor" transparency.