| Presentation | 2009-10-15 A Method for Improving Picture Quality of Irreversibly Encoded Sub-Sampling Pictures Makoto TADENUMA, Kazuhisa IGUCHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Unprocessed luminance component of the pictures, which are picked up by current Super Hi-Vision cameras or single imaging plate-type cameras for consumers, consists of sub-sampling data, so when the images are directly coded in a high compression rate by an irreversible encoding like MPEG2, distinctive degradation of picture quality occurs. As a method for improving the degradation, we invent a new pre and post processing technique; in which high frequency ingredients of horizontal and vertical direction are converted to the orthogonal frequency area where original picture has no ingredients, then numbers of pixel are decreased into 3/4 in both horizontal and vertical direction. When this process is applied, the picture quality of irreversibly encoded sub-sampling pictures in high compression rate is improved with less quantity of data. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sub-Sampling / Irreversible Encoding / Picture Quality Improvement / Data Amount Reduction |
| Paper # | SIP2009-61,IE2009-86 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2009/10/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Method for Improving Picture Quality of Irreversibly Encoded Sub-Sampling Pictures |
| Sub Title (in English) | |
| Keyword(1) | Sub-Sampling |
| Keyword(2) | Irreversible Encoding |
| Keyword(3) | Picture Quality Improvement |
| Keyword(4) | Data Amount Reduction |
| 1st Author's Name | Makoto TADENUMA |
| 1st Author's Affiliation | Science & Technology Research Laboratories, NHK() |
| 2nd Author's Name | Kazuhisa IGUCHI |
| 2nd Author's Affiliation | Science & Technology Research Laboratories, NHK |
| Date | 2009-10-15 |
| Paper # | SIP2009-61,IE2009-86 |
| Volume (vol) | vol.109 |
| Number (no) | 227 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |