Eastman-Kodak Company

Dongli Yang

Allen J Rushing

Gregory Rombola

A method is described of processing image data of pixels to be rendered. In the method, image data representing a pixel to be rendered is provided. Criteria or tests are established for processing the pixel in accordance with binary error diffusion or multibit error diffusion. In response to examination of the pixel in accordance with the criteria, a decision is made as to whether the pixel is to be rendered in accordance with binary error diffusion or multibit error diffusion. The pixel is then rendered in accordance with the decision.

Method of processing pixels with binary or multibit error diffusion

A method and apparatus of generating rendered image data for use in reproducing an image with a series of patterns of halftone dots. In the method and apparatus an unrendered pixel value of a pixel to be rendered is compared with each of a series of threshold values in accordance with respective comparison criteria and a grey level for a rendered pixel of a halftone dot is generated by having certain threshold values define increasing grey level values of the rendered pixel upon meeting respective criteria and at least one threshold value of the series defines a decrease in grey level value of the rendered pixel for meeting a respective comparison criteria.

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Rochester, NY, United States of America

Dongli Yang