A real time image processor for reproduction of gray levels in dark areas on plasma display panel (PDP)

Author

Lee, Chang-Hoon ; Park, Seung-Ho ; Kang, Jin-Ku ; Kim, Choon-Woo

Author_Institution

Dept. of Electr. & Comput. Eng., Inha Univ., Inchon, South Korea

Volume

48

Issue

4

fYear

2002

fDate

11/1/2002 12:00:00 AM

Firstpage

879

Lastpage

886

Abstract

Due to the non-balanced and linear luminous characteristics of RGB color channels of plasma display panels (PDPs), it is required to determine the white point of each gray level and perform inverse gamma correction. However, the two measures cause degradation of gray level representation and undesirable false contouring in the dark areas on PDPs. We describe the implementation of a real time image processor with an error diffusion algorithm and unsharp masking operation. Experimental results show improvements of gray level representation and reduction of undesirable false contouring on the PDP.

Keywords

brightness; image colour analysis; image representation; image restoration; plasma displays; PDP; RGB color channels; error diffusion algorithm; false contouring; gray level representation; gray level reproduction; inverse gamma correction; luminous characteristics; plasma display panel; real time image processor; unsharp masking operation; white point; Area measurement; Cathode ray tubes; Color; Computer displays; Degradation; Hardware; Humans; Image converters; Plasma displays; Plasma measurements;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2003.1196416

Filename

1196416