亮度补偿 meaning in Chinese

luminance compensation

The study of lightness equalizing for the speech signal
语音信号亮度补偿技术研究
In general , three main steps can be distinguished in tackling the problem . first , before a facial expression can be analyzed , the face must be detected in a scene . based on color transformation and a novel lighting compensation technique , skin regions can be detected over the entire image ; then eye and mouth maps are constructed for verifying each face candidates
所提出的人脸表情的自动识别方法主要分为三步，首先是人脸检测，文中提出了一种基于色彩空间转换和亮度补偿的肤色检测算法，然后通过构建眼，嘴模板来进行人脸的特征点定位，以及获得图像中人脸所在区域。