Title:
画像処理装置
Document Type and Number:
Japanese Patent JP5399739
Kind Code:
B2
Abstract:
A representative pixel value calculation unit (120) divides an image represented by raw data (D0) into a plurality of blocks and calculates representative pixel values (S) for each block. A detection unit (130) detects an object block which is a block including a blown-out highlight or a blocked-up shadow, from among the plurality of blocks. A B-detection unit (134) of the detection unit (130) performs a first detection processing for obtaining one of a difference between a color represented by the representative pixel values and gray, and a value that can approximately represent the difference, as a characteristic value, and for detecting, as the object block, a block in which the characteristic value is equal to or smaller than a first threshold. Consequently, blown-out highlights or blocked-up shadows included in an image can be detected at higher speed, and the omission of detection can be prevented.
More Like This:
Inventors:
Kentaro Niikura
Application Number:
JP2009042536A
Publication Date:
January 29, 2014
Filing Date:
February 25, 2009
Export Citation:
Assignee:
ルネサス electronics incorporated company
International Classes:
H04N5/243; G03B7/28; H04N9/04; H04N9/73
Attorney, Agent or Firm:
House ON 健