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| Presentation | 2017-06-29 15:25 A Study on Frame-level Delta-QP Control for 360°VR Video Kei Kawamura, Sei Naito (KDDI Research)  IE2017-29 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | $360^circ$ virtual reality experience recently becomes very poplar due to low-cost equipment of head-mount display. In this manuscript, we propose a coding control method to reduce bandwidth without sacrificing the coded image quality. A target is an equirectangular projection format with a traditional 2D video coding. Firstly, an objective quality criteria based on the sphere projection is introduced. A quantization step control is then proposed such that step size becomes wider where area is enlarged in the equirectangular format. Furthermore, a subjective evaluation condition is considered based on the expert viewing procedure. The proposed method is implemented on the x264, which is one of the open-source-software encoders. Experimental results shows that the 5.27% BD-rate reduction (performance improvement) is conformed in average of 10 sequences. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Coding control method / delta QP control / $360^circ$ video / video coding / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 113, IE2017-29, pp. 25-28, June 2017. | |
| Paper # | IE2017-29 | |
| Date of Issue | 2017-06-22 (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 | IE2017-29 |
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| Conference Information | |
| Committee | IE |
| Conference Date | 2017-06-29 - 2017-06-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image processing, coding, etc. |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2017-06-IE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Frame-level Delta-QP Control for 360°VR Video |
| Sub Title (in English) | |
| Keyword(1) | Coding control method |
| Keyword(2) | delta QP control |
| Keyword(3) | $360^circ$ video |
| Keyword(4) | video coding |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Kei Kawamura |
| 1st Author's Affiliation | KDDI Research, Inc. (KDDI Research) |
| 2nd Author's Name | Sei Naito |
| 2nd Author's Affiliation | KDDI Research, Inc. (KDDI Research) |
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| Speaker | Author-1 |
| Date Time | 2017-06-29 15:25:00 |
| Presentation Time | 30 minutes |
| Registration for | IE |
| Paper # | IE2017-29 |
| Volume (vol) | vol.117 |
| Number (no) | no.113 |
| Page | pp.25-28 |
| #Pages | 4 |
| Date of Issue | 2017-06-22 (IE) |
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