| Presentation | 2011-09-22 Stepwise Range Reduction Technique for Near-Lossless Image Coding Hitoshi Obara, Hisashi Murayama, Masato Sakata, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new technique of near-lossless image coding is described. We call the technique 'Stepwise Range Reduction Method', or SRRM, where an image is divided into a number of small regions in a recursive manner until pixel values in each individual region converges within a prescribed range. This property assures a maximum error of pixel values generated in encoding to be predictable unlike JPEG, which is widely used at present. By setting the range to a proper value, SRRM functions as either lossless or lossy coding. When encoding with SRRM in our experiments, a high compression efficiency was achieved due to an efficient expression of those regions, using a tree-like data structure. Local quality of an image was easily improved by specifying the region of interest (ROI). When decoding, a global or local (or both) smoothing process was applied, if necessary, for better image quality. Generally, SRRM showed a higher compression ratio for artificial images than for natural images. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Image coding / Near-lossless coding / File compression / Region division / Region of interest |
| Paper # | SIS2011-29 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2011/9/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Stepwise Range Reduction Technique for Near-Lossless Image Coding |
| Sub Title (in English) | |
| Keyword(1) | Image coding |
| Keyword(2) | Near-lossless coding |
| Keyword(3) | File compression |
| Keyword(4) | Region division |
| Keyword(5) | Region of interest |
| 1st Author's Name | Hitoshi Obara |
| 1st Author's Affiliation | Graduate School of Electrical and Electronic Engineering, Akita University() |
| 2nd Author's Name | Hisashi Murayama |
| 2nd Author's Affiliation | / Akita University |
| 3rd Author's Name | Masato Sakata |
| 3rd Author's Affiliation | |
| Date | 2011-09-22 |
| Paper # | SIS2011-29 |
| Volume (vol) | vol.111 |
| Number (no) | 210 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |