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儿童面部识别的纵向评估.pdf

上传人: 芦苇 编号:651693 2025-05-01 20页 1.30MB

1、Longitudinal Evaluation of Child Face RecognitionSurendra Singh(Clarkson University),Stephanie Schuckers(UNC Charlotte)1Challenge in child face recognition due to non-linear cranial growthDeep Neural Network(DNN)models for adults may not always be applicable to children.ObjectiveAnalyze DNN performa

2、nce on the YFA(young face aging)dataset(age up to 8 years).Study specific changes in face features,e.g.,nose,mouth and eyes.Identify unique physiological factors contributing to childrens facial development.Enhance accuracy and effectiveness of face recognition(FR)systems for children.ValueUnderstan

3、ding Challenges in Child Face Recognition.Benchmarking FR Performance Based on Growth in Children.Discovering Specific Changes in Facial Features Impacting Matching Performance.Problem2YFA Database(Young Face Aging)The Young Face Aging(YFA)DatabaseNumber of subjects at each age in the YFA Database.N

4、umber of images at each age in the YFA Database.Contains face images of children aged 3-18 years.330 subjects,with an average of six collections per subject over eight years.Images of the same subject were collected every six months for eight years.The first collection image was used for enrollment

5、and verified against each subsequent collection over the eight-year period.The database includes 60 subjects with a total of 1,322 samples collected over eight years.Collected in a controlled environment with consistent indoor lighting,neutral expressions,and minimized pose variations.Manual annotat

6、ion to exclude extremely blurry images and challenging poses.3Prior work DatabaseLongest time gap Time intervalAccuracyModelECLF113 years6 monthsTAR at 0.1%FARFaceNet:84.55 PFE:98.90 ArcFace:99.38 COTS:99.62ITWCC-D112TAR at 0.1%FARFR Model:COTS FR-A:0.676 FR-B:0.598 FR-C:0.463 FR-D:0.434 FR-E:0.759

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本文研究了儿童面部识别的挑战,由于非线性的头骨生长,成人面部识别的深度神经网络(DNN)模型不一定适用于儿童。研究使用了YFA(Young Face Aging)数据库,该数据库包含了330名年龄在3-18岁儿童的的面部图像,每名儿童有平均六次采集,持续八年。研究的主要发现包括:儿童面部识别准确度随年龄增长显著下降,特别是3-5岁和7.5-9岁年龄组;平均TAR(True Acceptance Rate)在0.5-2岁为98.52%,在2.5-4岁为95.68%,超过4岁年龄差距后识别准确度大幅下降;面部特征增长分析显示,4-16岁之间,鼻长、口宽和横向嘴长有显著增长,影响识别准确性。研究还比较了不同的面部检测算法,发现MTCNN和RetinaFace在儿童面部识别中提供最高准确度。未来研究将扩展数据集多样性,调查适应儿童面部生长的深度学习模型,并评估不同面部匹配算法。
"儿童面部识别挑战有哪些?" "如何提高儿童面部识别准确性?" "儿童面部成长对识别准确度有何影响?"
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