| Presentation | 2009-02-04 A study of frame-rate down-sampling for high frame-rate video Yukihiro BANDOH, Seishi TAKAMURA, Kazuto KAMIKURA, Yoshiyuki YASHIMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Over the past decade video acquisition rate has brokenthrough over 1000[Hz]. Current display systems, unfortunately, have a maximum frame-rate about 60[frames/sec]. The display systems are definitely slower than the camera system. When a high frame-rate video (over 1000[frames/sec]) is played in real time, however, it is necessary to down-sample the frame-rate of the video. Conventional methods keep constant the interval of neighbouring frames after down-sampling. It is based on the assumption that non-constant intervals would yield jerky motion, i.e. perceivable discontinuity in the optical flow field. However, this assumption is not true for high frame-rate video. Such video has many frames around the "constant interval" sub-sampled frame that do not yield jerky motion since the optical flow field displacement within the frames is too small to be perceived. In other words, constant frame interval is not always needed when down-sampling high frame-rate video. Relaxing the interval requirement allows greater flexibility in selecting the frames to be sub-sampled, which allows the number of bits in a sub-sampled sequence to be reduced, subject to realizing the same image quality. In this paper, we propose a temporal down-sampling method for high frame-rate video. The proposed method features the adaptive selection of down-sampled frames so as to minimize inter-frame prediction error. Our method can improve the PSNR of prediction signal by 0.13[dB] to 0.23[dB] compared to simple sub-sampling with constant interval. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | high frame-rate video / frame-rate conversion / video coding |
| Paper # | ITS2008-36,IE2008-206 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2009/1/28(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | A study of frame-rate down-sampling for high frame-rate video |
| Sub Title (in English) | |
| Keyword(1) | high frame-rate video |
| Keyword(2) | frame-rate conversion |
| Keyword(3) | video coding |
| 1st Author's Name | Yukihiro BANDOH |
| 1st Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation() |
| 2nd Author's Name | Seishi TAKAMURA |
| 2nd Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| 3rd Author's Name | Kazuto KAMIKURA |
| 3rd Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| 4th Author's Name | Yoshiyuki YASHIMA |
| 4th Author's Affiliation | NTT Cyber Space Laboratories, NTT Corporation |
| Date | 2009-02-04 |
| Paper # | ITS2008-36,IE2008-206 |
| Volume (vol) | vol.108 |
| Number (no) | 424 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |