Presentation | 2011-09-22 Stepwise Range Reduction Technique for Near-Lossless Image Coding Hitoshi Obara, Hisashi Murayama, Masato Sakata, |
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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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Committee | SIS |
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Conference Date | 2011/9/14(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 | 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 |