Methods An unsupervised local and global features extraction method was adopted for the localization of facial features of frontal view face image. First, a threshold was used to segment the image into foreground and background, and the nose was localized by considering the symmetry of the face. Second, Harris operator was adopted to detect interest points in a rectangular area covering all the facial features, and then local maximum of the interest points were detected. And finally, Kmeans clustering method was used to cluster the points and obtain the facial features localization.

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When facial features are highly nonlinear distributed, linear subspace methods are difficult to extract effectively facial features.

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facial expression：五官表情

"Facial Features""五官調(diào)整" | "Facial Expression"五官表情 | Face Fitting自動臉部辨識

features which displayed an almost unhidden：顯示的特徵一幾乎不隱藏

Ken didn't see any marshal in the facial / 肯恩沒有見到美顏術(shù)的任何陸空軍高級將官 | features which displayed an almost unhidden / 顯示的特徵一幾乎不隱藏 | coldness. / 寒冷.

Facial nerve canal：的例句

臉部特征抽取:extraction of facial features | Facial nerve canal的例句: | Facial nerve canal的全文例句: