Image Contrast Improvement Based on Differential Gray-levels Histogram
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- Saitoh Fumihiko
- Faculty of Engineering, Gifu University
Bibliographic Information
- Other Title
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- 濃度勾配ヒストグラムによる画像のコントラスト改善
- ノウド コウバイ ヒストグラム ニ ヨル ガゾウ ノ コントラスト カイゼン
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Abstract
When a captured image does not have good contrast, a method for improving its contrast that converts gray-levels based on the distribution of gray-levels included in the image is generally applied. A resultant image with good contrast does not always generated because the conventional method does not use a spatial feature included in an input image. This paper proposes a method for contrast improvement that can enhance differential gray-levels in an image in order to generate a resultant image with clearness and good contrast. The proposed method determines a gray-level of each pixel according to a Look-up-table generated from a histogram to represent a distribution of differential gray-levels. The experimental results show that the resultant images with natural and clear contrast were generated by the proposed method.
Journal
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- IEEJ Transactions on Electronics, Information and Systems
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IEEJ Transactions on Electronics, Information and Systems 126 (2), 228-236, 2006
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204604109312
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- NII Article ID
- 10017256758
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- NII Book ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL BIB ID
- 7827076
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed