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| Paper Abstract and Keywords | ||
| Presentation | 2009-10-15 15:00 A Method for Improving Picture Quality of Irreversibly Encoded Sub-Sampling Pictures Makoto Tadenuma, Kazuhisa Iguchi (NHK)  SIP2009-61 IE2009-86 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Unprocessed luminance component of the pictures, which are picked up by current Super Hi-Vision cameras or single imaging plate-type cameras for consumers, consists of sub-sampling data, so when the images are directly coded in a high compression rate by an irreversible encoding like MPEG2, distinctive degradation of picture quality occurs. As a method for improving the degradation, we invent a new pre and post processing technique; in which high frequency ingredients of horizontal and vertical direction are converted to the orthogonal frequency area where original picture has no ingredients, then numbers of pixel are decreased into 3/4 in both horizontal and vertical direction. When this process is applied, the picture quality of irreversibly encoded sub-sampling pictures in high compression rate is improved with less quantity of data. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Sub-Sampling / Irreversible Encoding / Picture Quality Improvement / Data Amount Reduction / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 226, SIP2009-61, pp. 29-34, Oct. 2009. | |
| Paper # | SIP2009-61 | |
| Date of Issue | 2009-10-08 (SIP, IE) | |
| 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 | SIP2009-61 IE2009-86 |
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| Conference Information | |
| Committee | SIP IE IPSJ-SLDM |
| Conference Date | 2009-10-15 - 2009-10-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Awara Onsen "Matsuya Sensen" |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Processor, DSP, image processing, etc. |
| Paper Information | |
| Registration To | SIP |
| Conference Code | 2009-10-SIP-IE-SLDM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Method for Improving Picture Quality of Irreversibly Encoded Sub-Sampling Pictures |
| Sub Title (in English) | |
| Keyword(1) | Sub-Sampling |
| Keyword(2) | Irreversible Encoding |
| Keyword(3) | Picture Quality Improvement |
| Keyword(4) | Data Amount Reduction |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Makoto Tadenuma |
| 1st Author's Affiliation | Science & Technology Research Laboratories, NHK (NHK) |
| 2nd Author's Name | Kazuhisa Iguchi |
| 2nd Author's Affiliation | Science & Technology Research Laboratories, NHK (NHK) |
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| Speaker | Author-1 |
| Date Time | 2009-10-15 15:00:00 |
| Presentation Time | 20 minutes |
| Registration for | SIP |
| Paper # | SIP2009-61, IE2009-86 |
| Volume (vol) | vol.109 |
| Number (no) | no.226(SIP), no.227(IE) |
| Page | pp.29-34 |
| #Pages | 6 |
| Date of Issue | 2009-10-08 (SIP, IE) |
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