发明申请
- 专利标题: Strategies for Producing Quantized Image Information
- 专利标题(中): 生成量化图像信息的策略
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申请号: US11276788申请日: 2006-03-14
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公开(公告)号: US20060147109A1公开(公告)日: 2006-07-06
- 发明人: Donald Munsil , Glenn Evans , Stacey Spears
- 申请人: Donald Munsil , Glenn Evans , Stacey Spears
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
Strategies are set forth herein for quantizing and dithering original image information to produce quantized image information. According to one exemplary implementation, the strategies involve: quantizing a sum that combines an original value taken from the original image information, a noise value, and an error term, to produce a quantized value; and calculating an error term for a subsequent quantizing operation by computing a difference between the quantized value and the original value. By virtue of his process, the strategies essentially add noise information to the quantization process, not the original image information, which results in quantized image information having reduced artifacts. The strategies can be used in conjunction with the Floyd-Steinberg error dispersion algorithm. According to another feature, the noise value is computed using a random number generator having a long repeat period, which further reduces artifacts.
公开/授权文献
- US07308151B2 Strategies for producing quantized image information 公开/授权日:2007-12-11