초록 ▼

A method and system implements a dynamic error diffusion process. A grey level value representing a pixel is received. An image segmentation circuit determines an image characteristic of the pixel being processed. A threshold circuit thresholds the grey level value (pixel) and generates an error val

A method and system implements a dynamic error diffusion process. A grey level value representing a pixel is received. An image segmentation circuit determines an image characteristic of the pixel being processed. A threshold circuit thresholds the grey level value (pixel) and generates an error value as a result of the threshold process. A portion of the error value is diffused to adjacent pixels on a next scanline. The distribution of this error value is dynamic in that different sets of weighting coefficients are used based the image characteristic of the processed pixel. One set of coefficients are utilized in processing a pixel having a first image characteristic, and a second set of coefficients are utilized in processing a pixel having a second image characteristic.

대표청구항 ▼

1. A method of diffusing an error generated from thresholding a grey level value representing a pixel, comprising the steps of:(a) assigning an image characteristic to a pixel within an image; (b) thresholding said pixel; (c) generating an error value as a result of the threshold process in said ste

1. A method of diffusing an error generated from thresholding a grey level value representing a pixel, comprising the steps of:(a) assigning an image characteristic to a pixel within an image; (b) thresholding said pixel; (c) generating an error value as a result of the threshold process in said step (b); (d) selecting a set of weighting coefficients from a plurality of possible weighting coefficient sets based on the assigned image characteristic of said pixel; and (e) diffusing the error value to adjacent pixels based on the selected set of weighting coefficients.