发明授权
- 专利标题: Ink relocation for color halftones
- 专利标题(中): 彩色墨水的墨水搬迁
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申请号: US904026申请日: 1997-07-31
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公开(公告)号: US5991512A公开(公告)日: 1999-11-23
- 发明人: Doron Shaked , Nur Arad , Andrew Fitzhugh , Irwin Sobel
- 申请人: Doron Shaked , Nur Arad , Andrew Fitzhugh , Irwin Sobel
- 申请人地址: CA Palo Alto
- 专利权人: Hewlett-Packard Company
- 当前专利权人: Hewlett-Packard Company
- 当前专利权人地址: CA Palo Alto
- 主分类号: B41J5/30
- IPC分类号: B41J5/30 ; G06T5/00 ; H04N1/46 ; H04N1/58 ; H04N1/60
摘要:
Current methodologies for color image halftoning produce prominent halftoning noise. Brightness variations between color dots placed at neighboring locations are a primary cause of color halftone noise. To correct this flaw, an Ink Relocation Postprocess to halftoning algorithms relocates ink drops between neighboring drop locations in order to reduce local brightness variations. Due to the intrinsic blurring side-effect of ink relocation, some enhancement may be desired. Two application-specific enhancement procedures are presented. In the first enhancement, ink relocation is suppressed in areas of fine detail. In the second enhancement, edge sharpening is performed after ink relocation.
公开/授权文献
- US5353023A Navigation system for cars 公开/授权日:1994-10-04
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