Fitzpatrick, Cella, Harper & Scinto
Image processing apparatus and image processing method
There is provided an image processing apparatus in which in a case of tone-expressing one pixel corresponding to a plurality of areas (printing resolution) in a multi-pass print, it is possible to output a uniform image without graininess or density unevenness over all-tone regions from a low-density region to a high-density region. To this end, by referring to dot patterns in which a print or a non-print of dots onto each pixel (area) corresponding to a printing resolution are in advance defined, quantization data is converted into binary data having the higher printing resolution. At this time, the dot patterns are prepared to be different from each other for M times of scans in a multi-pass print of M passes. In consequence, it is possible to restrict a variation of a coverage ratio due to a printing position displacement in each printing scan.
Canon Kabushiki Kaisha
G G
G06K G06K
inventional inventional
Wakako Takatoshi Toshiyuki Tetsuya Kiichiro Hirokazu
Yamamoto Nakano Chikuma Edamura Takahashi Tanaka