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| Presentation | 2009-04-27 13:00 A Study on Edge Adaptive Deblocking Filter Shohei Matsuo, Seishi Takamura (NTT), Yoshiyuki Yashima (Chiba Inst. of Tech.)  IE2009-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Blocky artifacts occur in the decoded image, because video coding standards such as MPEG-2 and H.264/AVC perform spatial-temporal prediction, transform and quantization on a block basis. To reduce the artifacts, H.264/AVC adopts an in-loop filter called ``Deblocking Filter" (DF). Conventional DF is performed perpendicularly to the block boundary. Therefore, there is a good chance that the aslant edges to be preserved could be smoothed by the conventional method. This paper proposes an enhanced deblocking filter method called ``Edge Adaptive Deblocking Filter" (EADF). EADF considers the characteristics such as differential images and intra prediction directions and relaxes the limitation of the filter direction. The simulation results showed that EADF was effective for the images which have long and clear aslant edges. We confirmed that the subjective quality of the filtered image was slightly improved. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | H.264/AVC / deblocking filter / blocky artifacts / edge adaptation / edge preservation / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 21, IE2009-5, pp. 21-25, April 2009. | |
| Paper # | IE2009-5 | |
| Date of Issue | 2009-04-20 (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 | IE2009-5 |
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| Conference Information | |
| Committee | IE |
| Conference Date | 2009-04-27 - 2009-04-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image Processing, Coding, etc. |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2009-04-IE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Edge Adaptive Deblocking Filter |
| Sub Title (in English) | |
| Keyword(1) | H.264/AVC |
| Keyword(2) | deblocking filter |
| Keyword(3) | blocky artifacts |
| Keyword(4) | edge adaptation |
| Keyword(5) | edge preservation |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shohei Matsuo |
| 1st Author's Affiliation | NTT Corporation (NTT) |
| 2nd Author's Name | Seishi Takamura |
| 2nd Author's Affiliation | NTT Corporation (NTT) |
| 3rd Author's Name | Yoshiyuki Yashima |
| 3rd Author's Affiliation | Chiba Institute of Technology (Chiba Inst. of Tech.) |
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| Speaker | Author-1 |
| Date Time | 2009-04-27 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | IE |
| Paper # | IE2009-5 |
| Volume (vol) | vol.109 |
| Number (no) | no.21 |
| Page | pp.21-25 |
| #Pages | 5 |
| Date of Issue | 2009-04-20 (IE) |
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