Title:
画像取込デバイスにおける自動フリッカ補正
Document Type and Number:
Japanese Patent JP4809443
Kind Code:
B2
Abstract:
The disclosure describes flicker detection and correction techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes flicker correction techniques that compare different image frames to detect flicker. In some embodiments, the comparisons involves summing intensity values associated with rows within the frames and comparing the row sums to generate a difference signal. Detection and correction of flicker may be performed using a first derivative of the difference signal. The first derivative of the difference signal can be used in variety of ways to detect and correct flicker.
Inventors:
Neues, Ing
Li, Jinjiang
Li, Jinjiang
Application Number:
JP2008549660A
Publication Date:
November 09, 2011
Filing Date:
January 05, 2007
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04N5/243; H04N5/353; H04N5/357
Domestic Patent References:
| JP2004222228A | 2004-08-05 | |||
| JPH1188780A | 1999-03-30 | |||
| JP2002084466A | 2002-03-22 | |||
| JP2006352242A | 2006-12-28 | |||
| JPH09284634A | 1997-10-31 |
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen