The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Sep. 28, 1989
John J Deacon, Austin, TX (US);
Albert D Edgar, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
RGB components of pairs of adjacent pels of a captured digitized image are averaged. A perceived color palette is constructed, each color being comprised of functionally combined RGB components of two different input palette colors. An array is formed of continuous colors, each indexed to the perceived palette color to which its RGB components are closest and indicating the two input palette colors defining the respective perceived color. RGB components for each averaged pel pair and the array index are then used to locate the perceived color closest thereto and, the two input palette colors corresponding to the perceived color. These two input colors are then substituted in a display for those of the two averaged pels and the process repeated for all averaged pel pairs. In a preferred embodiment, the difference between the perceived and averaged colors is diffused to adjacent averaged pels. An image is thereby readily produced having substantially more perceived colors than those available in the input palette.