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    • 4. 发明公开
    • 얼굴 영상의 조명 정규화 방법 및 장치
    • 用于照明正面化的方法和装置
    • KR1020090093737A
    • 2009-09-02
    • KR1020080051148
    • 2008-05-30
    • 성균관대학교산학협력단
    • 박석래박영경이수영오영진김중규정광희
    • G06K9/36G06T7/40
    • G06K9/4661G06K9/00234
    • A method and an apparatus for illumination normalization of a face image are provided to increase the recognition ration of a face recognition system by removing a partial shadow with the illumination. An upper bit plane adopting a bit plane as many as the number designated in a bit plane obtained from a pixel value of a facial image is obtained(S410). A blurring mask that expresses the shadow discontinuity by the lighting of the facial image is determined by using the upper bit plane(S420). A lighting-estimated image is outputted by performing the blurring filtering of the blurring mask to the facial image(S430), and the lighting-normalized image in which the illumination is removed from the facial image is obtained by using only the illumination estimation image and the facial image(S440).
    • 提供一种用于面部图像的照明归一化的方法和装置,以通过用照明去除部分阴影来增加人脸识别系统的识别率。 获得采用从面部图像的像素值获得的位平面中指定的数量多的位平面的高位平面(S410)。 通过使用高位平面(S420)来确定通过面部图像的点亮来表示阴影不连续性的模糊掩模。 通过对面部图像执行模糊掩模的模糊滤波来输出照明估计图像(S430),并且通过仅使用照明估计图像来获得其中从面部图像去除照明的照明标准化图像,以及 面部图像(S440)。