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Error diffusion method and apparatus using weighted vectors along a diagonal to correct for non-ideal ink ejection
Error diffusion method and apparatus using weighted vectors along a diagonal to correct for non-ideal ink ejection
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机译:使用沿对角线的加权矢量校正非理想墨水喷射的误差扩散方法和装置
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摘要
A device including: an acquirer acquiring image data having an M-value (M≧3) pixel value; a memory storing nozzle information; another memory storing error diffusion matrices having different diffusion ratios of an error; a selector selecting specific pixel data in the image data; an N-value converter converting the M-value to an N value (MN≧2); a diffuser diffusing the error to pixel data not subjected to the conversion in the image data according to the error diffusion matrix by using a difference between a selected pixel data value before and after conversion as the error; a generator generating print data defining nozzle dot information corresponding to the image data after the conversion; and a printer. The diffuser selects a specific error diffusion matrix for each selected pixel data according to the nozzle information, and diffuses the error to the pixel data not subjected to the conversion.
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