To improve backlash in an edge portion by performing smoothing processing only on the edge portion of a pixel value by determining whether to perform smoothing processing, not from attribute data but from the density difference of image data.
For reducing jaggies in second image data on the basis of first image data, the second image data obtained by performing pseudo-halftone processing on each image signal of the first image data, and attribute data indicating the attribute of each pixel in the first image data, a determination signal indicating whether to perform smoothing processing is output, on the basis of the first image data; and edge correction data for the smoothing processing are generated from the first image data, and whether to perform edge correction processing that uses the edge correction data is selected, according to the determination signal and the attribute data. Moreover, the second image data and the edge correction data are compared by an image signal to output either one thereof, according to the result of the comparison.
KABURAGI HIROSHI
| JPH11331603A | 1999-11-30 | |||
| JP2002281317A | 2002-09-27 | |||
| JP2006295877A | 2006-10-26 | |||
| JPH01115272A | 1989-05-08 | |||
| JPH0548890A | 1993-02-26 | |||
| JPH11305752A | 1999-11-05 | |||
| JPH11275368A | 1999-10-08 |
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu