| 摘要 |
<p>A method of generating a halftone image (104) on a printer (105) from a grey scale image (102) using a dither matrix (110). The halftone image (104) is represented by symbols printed by the printer (105). The matrix (110) generates many patterns (130,140,160). Each pattern has many elements in which a symbol is printed or not. The grey scale values of the elements in each pattern depend on a model (175,180) of the symbols. The model may be a circle (175) or a probability profile (180). The model (175,180) is incorporated into the patterns (130,140,160) as each pattern is generated. Summing the patterns produces the dither matrix. <IMAGE></p> |
