Title:
輝度信号作成装置、撮像装置、輝度信号作成方法、及びプログラム、並びに記録媒体
Document Type and Number:
Japanese Patent JP5868046
Kind Code:
B2
Abstract:
A luminance signal generation apparatus capable of suppressing an occurrence of aliasing at near horizontal and vertical Nyquist regions in the case of an achromatic object. An OG signal is generated by interpolating a green signal on pixels other than green pixels, and an SWY signal is generated as luminance signals at positions of pixels for respective colors. An angle determination signal is generated according to a direction of an edge of an image signal, and hierarchical image signals having different frequencies are generated from the image signal. Based on results of determination of false color region in the hierarchical image signals, one of the hierarchical image signals is selected. According to an angle determination signal and a chroma signal obtained from the selected hierarchical image signal, the OG signal and the SWY signal are mixed to generate a final luminance signal.
Inventors:
Hiroshi Ogino
Kiyosawa Kazuyoshi
Eiichiro Ikeda
Kiyosawa Kazuyoshi
Eiichiro Ikeda
Application Number:
JP2011154796A
Publication Date:
February 24, 2016
Filing Date:
July 13, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
H04N9/07
Domestic Patent References:
| JP2003348609A | ||||
| JP2010041511A | ||||
| JP2007251393A | ||||
| JP2005102014A |
Foreign References:
| WO2009072208A1 | ||||
| US20070139538 | ||||
| WO2011045849A1 |
Attorney, Agent or Firm:
Another role Shigehisa