Adaptive global concealment of video up-conversion artefacts

Author

Ojo, Olukayode A. ; Schoemaker, Herman

Author_Institution

Adv. Syst. & Appl. Lab., Philips Consumer Electron., Eindhoven, Netherlands

Volume

47

Issue

1

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

40

Lastpage

46

Abstract

Video field-rate conversion requires algorithms that improve dynamic resolution without degrading motion portrayal. Motion-compensated up-conversion is the state-of-the-art in this field. But motion compensation sometimes introduces objectionable artefacts into the output picture due to incorrect motion vectors. This paper describes a method of suppressing the image degradation due to motion compensation artefacts. It is unique in that it estimates global image degradation to determine the required level of error concealment or fallback. Two levels of fallback are implemented which take human perception properties into consideration. They are realized on a microprocessor´s ROM connected to an up-converter IC

Keywords

adaptive signal processing; image resolution; microprocessor chips; motion compensation; read-only storage; video signal processing; visual perception; adaptive global concealment; algorithms; dynamic resolution; error concealment; fallback levels; global image degradation estimation; human perception properties; image degradation suppression; microprocessor ROM; motion compensation artefacts; motion vectors; motion-compensated up-conversion; output picture; up-converter IC; video field-rate conversion; video up-conversion artefacts; Degradation; Displays; Filtering; Frequency conversion; Image converters; Low pass filters; Motion compensation; Signal processing algorithms; Streaming media; TV;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.920418

Filename

920418