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arXiv 1902.10885cs.CVcs.LG
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无约束环境下变模糊、光照和表情的人脸识别

Face Recognition Under Varying Blur, Illumination and Expression in an Unconstrained Environment

Madras Institute of Technology(马德拉斯理工学院)

Anubha Pearline. S, Hemalatha. M

摘要:

人脸识别系统是模式识别和计算机视觉的重要研究领域之一,同时也是其面临的主要挑战。识别人脸的一些挑战是模糊,照明和各种表情。使用相机、手机等拍摄照片时,模糊是很自然的。模糊可以是均匀的,也可以是不均匀的。通常,非均匀模糊发生在使用手持图像设备拍摄的图像中。在人脸识别系统中区分或处理模糊图像通常是困难的。在不同的照明条件下,正确识别人是具有挑战性的。幸福、悲伤、惊讶、恐惧、愤怒等多样化的面部表情会改变或变形正常图像的面部表情。由于面部表情所引起的变形,识别具有面部表情的人脸也是一项具有挑战性的任务。为了解决这些问题,进行了预处理步骤,之后进行模糊和光照鲁棒人脸识别(BIRFR)算法。利用表情去除(FER)算法将带有表情的测试图像和训练图像转化为中性人脸。每个训练图像都基于最佳变换扩展函数(TSF)和光照系数进行变换。从测试图像和变换后的训练图像中提取局部二值模式(LBP)特征用于分类。

英文摘要:

Face recognition system is one of the esteemed research areas in pattern recognition and computer vision as long as its major challenges. A few challenges in recognizing faces are blur, illumination, and varied expressions. Blur is natural while taking photographs using cameras, mobile phones, etc. Blur can be uniform and non-uniform. Usually non-uniform blur happens in images taken using handheld image devices. Distinguishing or handling a blurred image in a face recognition system is generally tough. Under varying lighting conditions, it is challenging to identify the person correctly. Diversified facial expressions such as happiness, sad, surprise, fear, anger changes or deforms the faces from normal images. Identifying faces with facial expressions is also a challenging task, due to the deformation caused by the facial expressions. To solve these issues, a pre-processing step was carried out after which Blur and Illumination-Robust Face recognition (BIRFR) algorithm was performed. The test image and training images with facial expression are transformed to neutral face using Facial expression removal (FER) peration. Every training image is transformed based on the optimal Transformation Spread Function (TSF), and illumination coefficients. Local Binary Pattern (LBP) features extracted from test image and transformed training image is used for classification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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