Title:
画像処理装置および方法
Document Type and Number:
Japanese Patent JP3927807
Kind Code:
B2
Abstract:
In an image processing method for reducing an input image while preventing moire without deterioration of image quality, presence/absence of periodicity is detected for each pixel on the input image, and if there is periodicity, an image period is detected (S 4 ). Sample points are sequentially extracted from the input image at prescribed sampling intervals (S 5 ). A value is obtained by multiplying the image period by n (n is a natural number) that exceeds the sampling interval, to set a smoothing area. Pixels around a sample point is smoothed in the set smoothing area. The pixel value for a reduced image is obtained (S 6 ). If there is an unprocessed sample point (NO at S 8 ), the step goes back to S 6 , and the next sample point is subjected to a similar process. If the process is terminated for all the sample points (YES at S 8 ), the reduced image is output.
Inventors:
Kazuyuki Meiko
Application Number:
JP2001546060A
Publication Date:
June 13, 2007
Filing Date:
December 11, 2000
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G06T3/40; G06T5/20; H04N1/393; H04N1/40; H04N1/409
Domestic Patent References:
| JP4156179A | ||||
| JP2193461A | ||||
| JP11088609A | ||||
| JP4180353A | ||||
| JP11017966A | ||||
| JP62088479A | ||||
| JP62088478A | ||||
| JP62256573A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai