A Proposal of Mouth Extraction Method with Suppressed Noise by Using Luminance Transform and Chromatic Characteristics
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- Tokuda Naoya
- Chukyo University
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- Fujiwara Takayuki
- Chukyo University
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- Funahashi Takuma
- Chukyo University
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- Koshimizu Hiroyasu
- Chukyo University
Bibliographic Information
- Other Title
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- 輝度変換と色特性によりノイズを抑制した口抽出手法の提案
- キド ヘンカン ト イロ トクセイ ニ ヨリ ノイズ オ ヨクセイ シタ クチ チュウシュツ シュホウ ノ テイアン
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Abstract
In this paper, we propose a mouth extraction method based on an integrated combination of color difference features, texture information characterized by the CFI (Co-occurrence Frequency Image) feature of the pixels, and the topological features of the extracted mouth region. The negative known that the ill effects caused by the presence of a mustache can be successfully suppressed by using the proposed method.<br>Mouth extraction is performed by using the CIE L*a*b* color space and its behavior was investigated. The system brings L* of CIE L*a*b* to the same value in all the pixels. The presence of a mustache and/or wrinkles around the mouth affects the extraction. Mustache color and skin color are closer to the gray scale than mouth color. If the system brings L* to the same value in all the pixels, mouth extraction would be unaffected by the presence of a shadow or mustache. Moreover, the weight of a* of CIE L*a*b* could provide a strong affect for emphasizing the difference between mouth and the surrounding skin region.<br>In the proposed method, the input image is binarized by referring to the CFI of the converted image. When the boundary between the mouth and the skin is not clear, CFI, the frequency of occurrence of a pixel pair of the image, is referred to detect such a boundary, because the frequency at the boundary is always low. We present the experimental results obtained and show that proposed method can be successfully used for mouth extraction.
Journal
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- IEEJ Transactions on Industry Applications
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IEEJ Transactions on Industry Applications 131 (4), 592-599, 2011
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679635198592
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- NII Article ID
- 10027980654
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- NII Book ID
- AN10012320
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- ISSN
- 13488163
- 09136339
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- NDL BIB ID
- 11064732
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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