Friday, February 5, 2010

1 bit de COR

A profundidade de cor ou "color depth" é uma termo utilizado para quantificar a quantidade de bits utilizados para representar uma cor num só pixel, ou bits por pixel (bpp). Quanto maior a profundidade de cor (bpp), mais definição ou qualidade tem a imagens que estamos a ver.
Se olharmos para uma uma imagem com um bit, quer dizer que têm duas cores, o preto e branco que conta sempre como cor.
Em baixo segue um esquema de imagens a preto e branco para explicar:





Monday, February 1, 2010

Scientists do, Monkey SEE

Researchers from the University of Washington and the University of Florida have used gene therapy to cure two monkeys of color blindness.

Scientists cast a rosy light on the potential for gene therapy to treat adult vision disorders involving cone cells, which are the most important cells for human vision. "We've added red sensitivity to cone cells in animals that are born with a condition that is exactly like human color blindness," William W. Hauswirth, Ph.D., a professor of ophthalmic molecular genetics at the University of Florida College of Medicine was quoted as saying. "Although color blindness is only moderately life-altering, we've shown we can cure a cone disease in a primate, and that it can be done very safely. That's extremely encouraging for the development of therapies for human cone diseases that really are blinding."


Segue o link do resto do artigo:

http://www.ivanhoe.com/channels/p_channelstory.cfm?storyid=22415