HP Color recovery

Color recovery is a technique used in Hewlett-Packard's older workstation graphics devices to produce a 'near 24-bit' color look from an 8-bit framebuffer. Color recovery does rely on software support which is provided by libraries such as PHIGS, PEXLib, Starbase and even Xlib although Xlib does not enable it by default.

When using Color Recovery the data is sent to the driver as an 24-bit image. The driver will then dither the data (in most cases this can be done by the graphics hardware for maximum performance) which is stored in the framebuffer as an 8-bit image. On displaying that 8-bit image data, HP's color recovery technology produces in real time an approximation of the original 24-bit image based on the hints provided by the dithered data. The result is significantly better looking than dithering alone. According to the article in HP's journal, the color recovery could achieve up to 23-bits of color accuracy.

Color Recovery was supported on framebuffers such as:

*The integral framebuffer in the HP 9000/712 workstation

*HCRX Framebuffer

*Visualize EG

see cite web|last=Barkans |first=Anthony C |url=http://www.hpl.hp.com/hpjournal/95apr/apr95a6.pdf
title=HP Color Recovery Technology |publisher=HP Journal
date=2005-04

cite
title=HP Color Recovery Technology, HP Publication Number 5962-9835E |publisher=HP
date=date unknown


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Recovery Version of the Bible — The Holy Bible Recovery Version Full name: The Holy Bible Recovery Version Abbreviation: RcV OT published: 1999 NT published: 1985 Complete Bible published: 1999 Author(s): Editorial Section of the Living Stream Ministry Textual basis …   Wikipedia

  • Colour recovery — This article is about film colour recovery. For film colorization, see film colorization. For the Hewlett Packard technique, see HP Color recovery. Colour recovery (or colour restoration) is a process which can restore lost colour, specifically… …   Wikipedia

  • List of color topics — This is a list of color topics; see also list of colors, which is a list of articles about specific named colors. See also the category list , which is currently much more comprehensive than this article in most areas.* Additive color *… …   Wikipedia

  • Pagans In Recovery — (sometimes abbreviated as PIR) is the phrase which is frequently used to describe the collective efforts of Neopagans to achieve abstinence or the remission of compulsive/addictive behaviors through twelve step programs such as Alcoholics… …   Wikipedia

  • Fluorescence recovery after photobleaching — (FRAP) denotes an optical technique capable of quantifying the two dimensional lateral diffusion of a molecularly thin film containing fluorescently labeled probes, or to examine single cells. This technique is very useful in biological studies… …   Wikipedia

  • National Recovery Administration — La National Recovery Administration (NRA), traducida como Administración Nacional de Recuperación en español, fue un órgano administrativo creado por el gobierno de Estados Unidos en el contexto del New Deal en 1933. La fundación de esta entidad… …   Wikipedia Español

  • HP 9000 — is the name for a line of workstation and server computer systems produced by the Hewlett Packard (HP) company. The HP 9000 brand was introduced in 1984 to encompass several existing technical workstations models previously launched in the early… …   Wikipedia

  • Visualize EG — The Visualize EG is a Hewlett Packard 2D graphics card used in their Series 700 UNIX workstations.The Visualize EG (project name Graffiti) was the basic graphics card in the era of HP s older B,C and J class workstations (e.g., the B132). Due to… …   Wikipedia

  • Camel toe — A camel toe …   Wikipedia

  • List of Red vs. Blue characters — This is a list of characters in the Rooster Teeth series Red vs. Blue. Contents 1 Red Team 1.1 Sarge 1.2 Simmons 1.3 Grif 1.4 …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.