Paper Abstract and Keywords |
Presentation |
2008-03-06 15:10
Reduction of IDCT Mismatch Accumulation on MPEG Video Decoder Atsushi Hatabu (NEC) CAS2007-122 SIP2007-197 CS2007-87 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper describes a noise reduction method for an MPEG video decoder in order to diminish a rapid accumulation of inverse-discrete-cosine-transform (IDCT) mismatch errors, which is typically produced on encoding motionless video sequences with a fixed pattern of the errors. Although MPEG standard defines an avoidance method for an encoder, called John Morris test, this test is described as a recommendation, an actually-ineffective rule. Then, we propose a decoding method to avoid this type of mismatch accumulation by substituting zeros for a weak block signal, which may offer a fixed pattern of mismatch errors. Evaluation results using an MPEG-4 video codec program show that the proposed method successfully reduces the rapid accumulation of IDCT mismatch errors in motionless video scenes |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
IDCT mismatch / MPEG / video coding / John Morris test / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 526, CAS2007-122, pp. 81-84, March 2008. |
Paper # |
CAS2007-122 |
Date of Issue |
2008-02-28 (CAS, SIP, CS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
CAS2007-122 SIP2007-197 CS2007-87 |
Conference Information |
Committee |
CS SIP CAS |
Conference Date |
2008-03-06 - 2008-03-07 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Yamaguchi University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Network processors, signal processing for communications, wireless LAN/PAN, etc. |
Paper Information |
Registration To |
CAS |
Conference Code |
2008-03-CS-SIP-CAS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Reduction of IDCT Mismatch Accumulation on MPEG Video Decoder |
Sub Title (in English) |
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IDCT mismatch |
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MPEG |
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video coding |
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John Morris test |
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1st Author's Name |
Atsushi Hatabu |
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NEC Corporation (NEC) |
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Speaker |
Author-1 |
Date Time |
2008-03-06 15:10:00 |
Presentation Time |
25 minutes |
Registration for |
CAS |
Paper # |
CAS2007-122, SIP2007-197, CS2007-87 |
Volume (vol) |
vol.107 |
Number (no) |
no.526(CAS), no.528(SIP), no.530(CS) |
Page |
pp.81-84 |
#Pages |
4 |
Date of Issue |
2008-02-28 (CAS, SIP, CS) |
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