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| Presentation | 2008-01-25 11:20 [Technology Exhibit] Optimal Viewing Area Estimation Method of Video Contents for Mobile Device -- By using Viewer’s Operation Logs -- Hidefumi Iwashita, Takamichi Miyata, Yoshiyuki Yashima, Yoshinori Sakai (Tokyo Tech)  MoMuC2007-91 USN2007-84 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the case of watching high resolution video content with relatively low resolution display, the optimal cropping area exist that maximize the subjective quality. We have already pointed out that there is a relationship between the optimal cropping area and the viewers' cropping operation logs. The logs are obtained from the user interface which allows viewers to achieving their preference. This paper proposes an estimation method for the optimal cropping area based on ACM(Active Contour Model)\cite{snake}. In this method, ACM converges by using the logs as the histograms which represent number of viewers at each pixel in each frame. Experimental result shows the proposed method improves the subjective quality than the video by the simple down sampling. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Video adaptation / Mobile device / Virtual camera / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, Jan. 2008. | |
| Paper # | ||
| Date of Issue | 2008-01-17 (MoMuC, USN) | |
| 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 | MoMuC2007-91 USN2007-84 |
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| Conference Information | |
| Committee | USN CQ MoNA |
| Conference Date | 2008-01-24 - 2008-01-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kenshu Kouryu Center, Actcity Hamamatsu (Shizuoka) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Application quality, Mobile P2P, Ubiquitous networks, Ad hoc networks, Sensor network, etc. |
| Paper Information | |
| Registration To | MoNA |
| Conference Code | 2008-01-USN-CQ-MoMuC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optimal Viewing Area Estimation Method of Video Contents for Mobile Device |
| Sub Title (in English) | By using Viewer’s Operation Logs |
| Keyword(1) | Video adaptation |
| Keyword(2) | Mobile device |
| Keyword(3) | Virtual camera |
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| 1st Author's Name | Hidefumi Iwashita |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Takamichi Miyata |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Yoshiyuki Yashima |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 4th Author's Name | Yoshinori Sakai |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2008-01-25 11:20:00 |
| Presentation Time | 270 minutes |
| Registration for | MoNA |
| Paper # | MoMuC2007-91, USN2007-84 |
| Volume (vol) | vol.107 |
| Number (no) | no.446(MoMuC), no.447(USN) |
| Page | pp.97-102(MoMuC), pp.113-118(USN) |
| #Pages | 6 |
| Date of Issue | 2008-01-17 (MoMuC, USN) |
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