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| Presentation | 2008-03-13 16:55 Image Quality Control and Its Automatic Adjustment for ROI Images in JPEG2000 Yoshihiro Kitaura, Mitsuji Muneyasu (Kansai Univ.)  SIS2007-80 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | JPEG2000 still image coding standard has a feature called Region of Interest (ROI) coding which is based on the Max-shift method. This feature can encode a restricted region in an image prior to its background (BG) region. However, it is difficult for the ROI coding based on the Max-shift method to achieve relative image quality control between ROI and BG region because the ROI region is automatically treated as maximum quality. To solve this problem and achieve relative and fine image quality control between ROI and BG region, we propose a method modifying ROI masks which identify pixels belonging to the ROI region in each sub-band. Furthermore, by using contribution for the whole image derived from DWT coefficients obtained in JPEG 2000 encoder, we implement a method which automatically adjusts the image quality of ROI regions in ROI images to some desired quality levels. The standard decoder of JPEG 2000 part 1 can decode this encoded data. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | JPEG2000 / Max-shift method / ROI coding / image quality control / DWT / ROI mask / automatic adjustment / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 547, SIS2007-80, pp. 69-74, March 2008. | |
| Paper # | SIS2007-80 | |
| Date of Issue | 2008-03-06 (SIS) | |
| 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 | SIS2007-80 |
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| Conference Information | |
| Committee | SIS |
| Conference Date | 2008-03-13 - 2008-03-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Musashi Institute of Technology(Setagaya) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SIS |
| Conference Code | 2008-03-SIS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Image Quality Control and Its Automatic Adjustment for ROI Images in JPEG2000 |
| Sub Title (in English) | |
| Keyword(1) | JPEG2000 |
| Keyword(2) | Max-shift method |
| Keyword(3) | ROI coding |
| Keyword(4) | image quality control |
| Keyword(5) | DWT |
| Keyword(6) | ROI mask |
| Keyword(7) | automatic adjustment |
| Keyword(8) | |
| 1st Author's Name | Yoshihiro Kitaura |
| 1st Author's Affiliation | Kansai University (Kansai Univ.) |
| 2nd Author's Name | Mitsuji Muneyasu |
| 2nd Author's Affiliation | Kansai University (Kansai Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-03-13 16:55:00 |
| Presentation Time | 25 minutes |
| Registration for | SIS |
| Paper # | SIS2007-80 |
| Volume (vol) | vol.107 |
| Number (no) | no.547 |
| Page | pp.69-74 |
| #Pages | 6 |
| Date of Issue | 2008-03-06 (SIS) |
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