IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND PROGRAM
PROBLEM TO BE SOLVED: To provide halftone image data with no interference between an input image and a threshold matrix even when input image data is a flat image or an image containing many edges or fine lines.SOLUTION: With a pixel value representing a small area constituting a predetermined proce...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide halftone image data with no interference between an input image and a threshold matrix even when input image data is a flat image or an image containing many edges or fine lines.SOLUTION: With a pixel value representing a small area constituting a predetermined processing area, a quantization total value with a threshold group corresponding to the processing area is calculated, an output target value is calculated by mixing the quantization total value in accordance with a ratio of a small area occupying the processing area, and output values are assigned in a predetermined order.SELECTED DRAWING: Figure 2
【課題】 入力画像データが平坦画像であっても、エッジや細線を多く含む画像であっても、入力画像と閾値マトリクスとの干渉のないハーフトーン画像データを得る。【解決手段】 所定処理領域を構成する小領域を代表する画素値において、処理領域に対応する閾値群との量子化合計値を算出し、この量子化合計値を処理領域に占める小領域の割合に応じて混合することで出力目標値を算出し、所定の分配順で出力値を割り振る。【選択図】 図２ |
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