Title:
SIGNAL PROCESSING DEVICE AND METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP3800427
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a signal handled by a device with conformity to a prescribed specification for expressing a color with the color gamut larger than a prescribed specification.
SOLUTION: In a primary color conversion unit 62, a first color at a primary color point with the color gamut larger than an original color point of BT.709 is converted to a second color signal based on a primary color of BT.709. In a photoelectric conversion unit 63, the second color signal is converted to a third color signal according to characteristics of photoelectric conversion defined in a numerical range larger than a numerical range of 0 to 1.0 that brightness signal based on BT.709 and a color signal based on color-difference signal can take. In a color signal conversion unit 64, the third signal is converted to a brightness signal and a color difference signal. In an integrated compensation unit 64A, the color difference signal is compensated to a color difference signal of -0.57 to 0.56 including -0.5 to 0.5 of BT.709 which is expressed by allotting it to an integer value of 1 to 254 including 16 to 240 of BT.709. This invention can be applied to a video camera, for an example.
Inventors:
Ishimoto Hikaru
Koichiro Kakinuma
Takehiro Nakaeda
Tatsuhiko Matsumoto
Shuichi Haga
Hiroshi Takizuka
Yoshiki Shirochi
Naoya Kato
Hiroshi Yamashita
Koichi Oura
Yoshihiro Kosugi
Junichi Iwai
Kazue Uemura
Shigeo Kubota
Hideo Morita
Koichiro Kakinuma
Takehiro Nakaeda
Tatsuhiko Matsumoto
Shuichi Haga
Hiroshi Takizuka
Yoshiki Shirochi
Naoya Kato
Hiroshi Yamashita
Koichi Oura
Yoshihiro Kosugi
Junichi Iwai
Kazue Uemura
Shigeo Kubota
Hideo Morita
Application Number:
JP2004211419A
Publication Date:
July 26, 2006
Filing Date:
July 20, 2004
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N9/64; H04N9/04
Domestic Patent References:
| JP62200889A | ||||
| JP2003092690A | ||||
| JP2003087587A | ||||
| JP2002314831A | ||||
| JP2005269443A |
Attorney, Agent or Firm:
Yoshio Inamoto