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Method and system for hybrid error diffusion processing of image information using adaptive white and black reference values
Method and system for hybrid error diffusion processing of image information using adaptive white and black reference values
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机译:使用自适应黑白参考值的图像信息混合误差扩散处理的方法和系统
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摘要
A method and system implements a high addressability characteristic into an error diffusion process. A histogram of the image is generated and the actual background and black reference values are determined. A gray level value representing a pixel is received. The gray level value has a first resolution which corresponds to an original input resolution. The gray level value is interpolated to generate subpixel gray level values which correspond to a second resolution. The second resolution is higher than the first resolution and corresponds to the high addressability characteristic. A threshold circuit thresholds the interpolated gray level value and generates an error value as a result of the threshold using the determined background and black reference values. The error value has a resolution corresponding to the first resolution. A portion of the error value is diffused to adjacent pixels on a next scanline.
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