发明授权
- 专利标题: Population attribute compression
- 专利标题(中): 人口属性压缩
-
申请号: US589563申请日: 1990-09-28
-
公开(公告)号: US5467110A公开(公告)日: 1995-11-14
- 发明人: James M. White , Vance Faber , Jeffrey S. Saltzman
- 申请人: James M. White , Vance Faber , Jeffrey S. Saltzman
- 申请人地址: CA Alameda
- 专利权人: The Regents of the University of California, Office of Technology Transfer
- 当前专利权人: The Regents of the University of California, Office of Technology Transfer
- 当前专利权人地址: CA Alameda
- 主分类号: G09G5/06
- IPC分类号: G09G5/06 ; G09G1/28
摘要:
An image population having a large number of attributes is processed to form a display population with a predetermined smaller number of attributes that represent the larger number of attributes. In a particular application, the color values in an image are compressed for storage in a discrete look-up table (LUT). Color space containing the LUT color values is successively subdivided into smaller volumes until a plurality of volumes are formed, each having no more than a preselected maximum number of color values. Image pixel color values can then be rapidly placed in a volume with only a relatively few LUT values from which a nearest neighbor is selected. Image color values are assigned 8 bit pointers to their closest LUT value whereby data processing requires only the 8 bit pointer value to provide 24 bit color values from the LUT.