| 摘要 |
PROBLEM TO BE SOLVED: To provide a print higher in picture quality while reducing storage capacity required for converting image information, which is described in a page description language, into raster images. SOLUTION: A command separating part 11 classifies a print description language(PDL) inputted to an input terminal A into commands corresponding to a multilevel character, binary character, multilevel vector, binary vector, graphics and raster image. A binary vector processing part 15 converts the vector command into a binary edge list. A graphics processing part 16 converts the graphics plotting command into a multilevel edge list. A raster image processing part 17 converts the raster image plotting command into a multilevel edge list. A composing part 18 composes the edge lists from the respective processing parts, converts the composite list into the raster image, outputs it to an output terminal A, generates classification data showing the classification of respective pixels in the raster image and outputs them to an output terminal B. |
