Invention Grant
US08237989B2 Method to improve a halftone by combining halftoning with algorithmic processing
失效
通过将半色调与算法处理相结合来改进半色调的方法
- Patent Title: Method to improve a halftone by combining halftoning with algorithmic processing
- Patent Title (中): 通过将半色调与算法处理相结合来改进半色调的方法
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Application No.: US10888883Application Date: 2004-07-09
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Publication No.: US08237989B2Publication Date: 2012-08-07
- Inventor: Stephen K. Herron , William Kress
- Applicant: Stephen K. Herron , William Kress
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba,Toshiba Tec Kabushiki Kaisha
- Current Assignee: Kabushiki Kaisha Toshiba,Toshiba Tec Kabushiki Kaisha
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: SoCal IP Law Group LLP
- Agent Steven C. Sereboff; Jonathan Pearce
- Main IPC: H04N1/405
- IPC: H04N1/405

Abstract:
The present invention is directed to a system and method for halftone screening. A system for halftone screening includes means adapted to receive image data having a number of tonal levels representative of a continuous tone image. The system further includes a memory including a LUT having a number of alternative halftone cell arrangements for each tonal level. Each cell of the LUT consists of a number of device dots describing a particular gray value. For each gray value, there are several alternative cells with different arrangements of the same number of device dots. The LUT is configured with the cells of different arrangements in rows. The rows increase in the number of device dots; hence, each column describes halftone cells of increasing tonal values. The system then communicates the image data having a tonal level to the LUT, and randomly selects a halftone cell arrangement to generate a halftone output.
Public/Granted literature
- US20060007492A1 Method to improve a halftone by combining halftoning with algorithmic processing Public/Granted day:2006-01-12
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