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摘要


本文提出可快速萃取人臉範圍、眼睛、嘴巴及鼻子的演算法則。首先將取得影像的色彩空間由RGB轉換成YCrCb,透過突顯特定區間的膚色範圍萃取出人臉範圍,接著以中通濾波來抑制雜訊,隨後對人臉範圍做水平投射,藉由分析投射所得之直方圖,搜尋出雙眼所在區域,並推算其重心座標。其次,利用人臉器官間幾何比例關係推算出嘴巴及鼻子的大略位置,並透過突顯特定區間的膚色範圍,以突顯出嘴巴區域,接著以投射搜尋出嘴巴位置,並推算其重心。在推算出嘴巴的所在位置之後,利用其位置資訊結合人臉器官間幾何關係,推算出鼻子的大略位置,並利用投射法,找出鼻子位置。本文提出之方法可用來搜集人臉相關特徵資料,經實驗證明相當快速實用。

並列摘要


This paper proposed an efficient method to extract the features on human face including eyes, mouth and nose. First, the color image was converted from the RGB to YCrCb format. Through the information of skin color, the potential face region can be detected. Second, horizontal projection was used on face regions to look for the eyes block regions. Third, from the geometric proportion of the human face, determine the rough location of the mouth and nose. Through the skin color information, catch out the mouth regions; then, with projection, find out the specific mouth location and compute their weighted coordinates. The same method is used to extract the nose location. The proposed method can be used to detect the features of human face, and from the experiment, it has been proved to be efficiently.

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