Title:
画像信号処理装置
Document Type and Number:
Japanese Patent JP5533752
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem in which an image signal processing apparatus performing a wide dynamic range (WDR) processing, capable of obtaining an image with few blown-out highlights and blocked-up shadows by combining two images of a high-speed exposure image and low-speed exposure image, may cause many blown-out highlights and blocked-up shadows depending on a subject, particularly under a condition where the WDR is required, so that a feedback control, using the detection data, needs a time to optimally control detection data with an extreme blown-out highlight, obtained from the subject.SOLUTION: According to a detection result obtained by signal level detecting means for an image sensor with nonlinear photoelectric conversion characteristics, a long-time exposure and a short-time exposure by an image sensor with linear photoelectric conversion characteristics are controlled.
Inventors:
Tsutomu Usui
Yuichi Nonaka
Hirooka Shinichiro
Yuichi Nonaka
Hirooka Shinichiro
Application Number:
JP2011066957A
Publication Date:
June 25, 2014
Filing Date:
March 25, 2011
Export Citation:
Assignee:
Hitachi Consumer Electronics Co., Ltd.
International Classes:
H04N5/235; G03B7/093
Domestic Patent References:
| JP2011024088A | ||||
| JP2004007298A | ||||
| JP2001103379A |
Attorney, Agent or Firm:
Yamato Tsutsui