Title:
METHOD FOR GAMMA CHARACTER EQUIVALENT MODEL AND PARAMETER DETERMINATION AND GAMMA CORRECTION
Document Type and Number:
WIPO Patent Application WO/2007/003086
Kind Code:
A1
Abstract:
The invention discloses a method for gamma correction,for correcting gamma
character of Nt links. Said invention comprises the steps of: determining the
insertion point for correction and dividing the Nt links into Na links which are
located before the insertion point and Np links which are located after said point,
wherein Na≥0, Np≥0 and Na +Np =Nt ; determining the gamma character
equivalent model and the inverse gamma model of said Na links and the gamma character
equivalent model and the inverse gamma model of said Np links; configuring the
correction link model according to the inverse gamma character model of Na and
the inverse gamma character model of Np, determining the correction signal output
of the Na links by the correction link model and then inputting the correction
signal into the Np links.The invention solves such problem as the inaccurate
precise in link gamma character correction and is suitable for the general gamma
character correction in single link and multiple links connection.
Inventors:
LUO ZHONG (CN)
Application Number:
PCT/CN2006/000710
Publication Date:
January 11, 2007
Filing Date:
April 18, 2006
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
LUO ZHONG (CN)
LUO ZHONG (CN)
International Classes:
H04N9/69
Foreign References:
| JPH07264406A | 1995-10-13 | |||
| CN1507188A | 2004-06-23 | |||
| JPH05219412A | 1993-08-27 | |||
| US6441870B1 | 2002-08-27 |
Attorney, Agent or Firm:
DEQI INTELLECTUAL PROPERTY LAW CORPORATION (No. 1 Zhichun Road Haidian District, 3 Beijing, CN)
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