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科技與工程學院
機電工程學系
教師著作
教師著作
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/31266
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search.filters.author.鄔誌仁
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search.filters.author.葉榮木
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search.filters.author.蔡俊明
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search.filters.subject.人臉偵測
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search.filters.subject.主軸 k-means
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search.filters.subject.人臉辨識
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search.filters.subject.光線補償
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有效的膚色偵測器應用於動態人臉偵測系統
(
2007-06-01
)
鄔誌仁
;
蔡俊明
;
葉榮木
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本篇論文提出一套針對不同亮度做補償之膚色偵測器。由於膚色極容易受光線影響。因此,必須做一些適當的光線補償。首先,本篇採用 Chen所提出的適應性光線補償來做亮度校正。隨後,我們在此訓練出兩組 CbCr 值來做膚色分割。而在訓練過程中,採用「主軸 k-means」演算法將訓練資料做分群處理。而在特徵擷取部分,利用眼睛和嘴巴的特徵來定義人臉區域。實驗結果顯示出,本篇論文所提出之方法已有改善,膚色偵測率高達95.02%;且動態偵測率高達 93.33%。在此,我們主要是針對正臉以及接近正臉的人臉來做實驗。對於背景太複雜的情形下,仍然有偵測不到的現象。
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