摘要:人脸表情识别作为智能化人机交互技术中的一个重要组成部分,近年来得到了广泛关注。本文提出了一种用DCT-BP神经网络算法来识别面部表情,先对图像进行灰度均衡和图像平滑的预处理,然后利用离散余弦变换获取图像的表情特征参数,最后利用前向反馈算法进行识别。
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