| 摘要 |
A method is provided for enhancing a grayscale raster image comprising pixels. The method comprises the steps of composing a second raster image of equal dimensions to said raster image, selecting a target pixel in the second raster image, having a target position, and deriving a grayscale value for the target pixel from a grayscale value of a pixel in said raster image that is in a neighbourhood of a pixel on a position corresponding to the target position, thereby dispersing the gray value of a pixel in a predetermined range around its original position and working the second raster image up for a halftoning process without using pixel segmentation. |
