Image processing techniques for blind TV ghost cancellation

Author

Lei, Zhichun ; Appelhans, Peter ; Schröder, Hartmut

Author_Institution

Dortmund Univ., Germany

Volume

4

fYear

1997

fDate

21-24 Apr 1997

Firstpage

2561

Abstract

This paper describes a technique to ghosts cancellation without a ghost cancellation reference signal. The existing vertical edges in TV image are used to estimate the channel characteristics. With the estimating results, the coefficients of the equalizer are updated. A method to speed up the convergence is given. The equalizer structure for cancelling all kinds of ghosts is discussed too. A new improved solution is achieved by interpreting the TV synchronisation signal as a genuine edge

Keywords

convergence of numerical methods; equalisers; image processing; interference suppression; synchronisation; telecommunication channels; television interference; video signal processing; TV image; TV synchronisation signal; blind TV ghost cancellation; channel characteristics estimation; convergence; edge; equalizer coefficients updating; equalizer structure; ghosts cancellation; image processing; vertical edges; Amplitude estimation; Convergence; Delay estimation; Equalizers; Histograms; Image edge detection; Image processing; Parameter estimation; Phase estimation; TV;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.595311

Filename

595311