Invention Grant
US08169665B2 Tone dependent green-noise error diffusion method and printing device thereof
有权
音调依赖绿噪声误差扩散方法及其打印装置
- Patent Title: Tone dependent green-noise error diffusion method and printing device thereof
- Patent Title (中): 音调依赖绿噪声误差扩散方法及其打印装置
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Application No.: US12414635Application Date: 2009-03-30
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Publication No.: US08169665B2Publication Date: 2012-05-01
- Inventor: Wen-Chian Wong , Chen-Chung Chen
- Applicant: Wen-Chian Wong , Chen-Chung Chen
- Applicant Address: CN Guangzhou TW Taipei
- Assignee: Silitek Electronic (Guangzhou) Co., Ltd.,Lite-On Technology Corp.
- Current Assignee: Silitek Electronic (Guangzhou) Co., Ltd.,Lite-On Technology Corp.
- Current Assignee Address: CN Guangzhou TW Taipei
- Agency: Kile Goekjian Reed & McManus PLLC
- Main IPC: H04N1/52
- IPC: H04N1/52 ; H04N1/58 ; G06T5/00
Abstract:
A tone dependent green-noise error diffusion method includes setting a first threshold and a second threshold, and determining a two-level value of a color level of an input image according to the first threshold and the second threshold; subtracting the two-level value from the color level value to generate an error value; performing an error diffusion on the error value to generate an error diffusion accumulation value; adjusting the color level according to the error diffusion accumulation value; performing a hysteresis filtering on the two-level value to generate an output dependent feedback value; and adjusting the color level according to the output dependent feedback value.
Public/Granted literature
- US20100245927A1 TONE DEPENDENT GREEN-NOISE ERROR DIFFUSION METHOD AND PRINTING DEVICE THEREOF Public/Granted day:2010-09-30
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