| Presentation | 2006-12-14 Adaptive Pre-filter for Image Quality Fluctuation of Intra-frame and Inter-frame Tokinobu MITASAKI, Naoki ONO, Kazuto KAMIKURA, Yoshiyuki YASHIMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In video coding processing, a pre-filter is often used for a high efficiency coding and a noise rejection as a pre-processing. We proposed an adaptive frame-by-frame pre-filter that made comparable objective image quality for every frame after pre-filtering. If a frequency for each region in frame was deferent, the image quality was also different and deteriorated subjectively because the same bandwidth was used for all regions in the frame. Even though the high-frequency components in the region with fast motion, such as watering and camera panning, is less remarkable than the one with stasis as the image quality deterioration and has influence on the encoding efficiency, existing our filter used the same bandwidth which is determined by only the objective image quality regardless of motion. By considering the motion information and cutting off the bandwidth for the high frequency component in the region with the motion wider than the one with the stasis, we can improve the encoding efficiency while the subjective image quality with motion information is equal to the one without motion information. In this report, we propose an adaptive pre-filter for image quality fluctuation of intra-frame and inter-frame to improve the subjective image quality and the encoding efficiency. By the experiment for comparing the new method and existing method, we show that the encoding efficiency is improved while the subjective quality of images filtered by these methods are almost same. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Filter / Bandwidth / Frequency / Motion / Intra-frame / Inter-frame |
| Paper # | CS2006-50,IE2006-118 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2006/12/7(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Systems (CS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Adaptive Pre-filter for Image Quality Fluctuation of Intra-frame and Inter-frame |
| Sub Title (in English) | |
| Keyword(1) | Filter |
| Keyword(2) | Bandwidth |
| Keyword(3) | Frequency |
| Keyword(4) | Motion |
| Keyword(5) | Intra-frame |
| Keyword(6) | Inter-frame |
| 1st Author's Name | Tokinobu MITASAKI |
| 1st Author's Affiliation | NTT CyberSpace Laboratories, NTT Corporation() |
| 2nd Author's Name | Naoki ONO |
| 2nd Author's Affiliation | NTT CyberSpace Laboratories, NTT Corporation |
| 3rd Author's Name | Kazuto KAMIKURA |
| 3rd Author's Affiliation | NTT CyberSpace Laboratories, NTT Corporation |
| 4th Author's Name | Yoshiyuki YASHIMA |
| 4th Author's Affiliation | NTT CyberSpace Laboratories, NTT Corporation |
| Date | 2006-12-14 |
| Paper # | CS2006-50,IE2006-118 |
| Volume (vol) | vol.106 |
| Number (no) | 421 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |