| Presentation | 2006-02-20 Scheme of prefilter control for low bitrate TV distribution Ryoichi KAWADA, Atsushi KOIKE, Yasuyuki NAKAJIMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In IP-based TV distribution, as the available bit rate for compression is rather low, coding noise is sometimes visible in critical scenes. Prefiltering, which is done before encoding, is effective as a countermeasure, although excessive smoothing may occur. Thus, this paper proposes a scene-adaptive method to control a prefilter that is separated from the encoder. Calculating block-wise motion-compensated predictive error variances and correlation coefficients estimate coding noise and its expected improvement by prefiltering every frame, realizing a control scheme where prefiltering is performed only when it is effective. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IP television / coding noise / prefilter / motion compensation / predictive error variance / correlation coefficient |
| Paper # | ITS2005-73,IE2005-280 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2006/2/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Scheme of prefilter control for low bitrate TV distribution |
| Sub Title (in English) | |
| Keyword(1) | IP television |
| Keyword(2) | coding noise |
| Keyword(3) | prefilter |
| Keyword(4) | motion compensation |
| Keyword(5) | predictive error variance |
| Keyword(6) | correlation coefficient |
| 1st Author's Name | Ryoichi KAWADA |
| 1st Author's Affiliation | KDDI R & D Laboratories Inc.() |
| 2nd Author's Name | Atsushi KOIKE |
| 2nd Author's Affiliation | KDDI R & D Laboratories Inc. |
| 3rd Author's Name | Yasuyuki NAKAJIMA |
| 3rd Author's Affiliation | KDDI R & D Laboratories Inc. |
| Date | 2006-02-20 |
| Paper # | ITS2005-73,IE2005-280 |
| Volume (vol) | vol.105 |
| Number (no) | 608 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |