arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1902.07902cs.CV
收藏

ComplexFace:一种用于小数据集图像分类的多表示方法

ComplexFace: a Multi-Representation Approach for Image Classification with Small Dataset

School of Basic Medical Sciences, Guangzhou Medical University(广州医科大学基础医学院);University of South Carolina(南卡罗来纳大学);Peking University Shenzhen Graduate School(北京大学深圳研究生院)

Guiying Zhang, Yuxin Cui, Yong Zhao, Jianjun Hu

摘要:

当提供足够的训练图像时,最先进的人脸识别算法能够实现良好的性能。遗憾的是,在一些真实的人脸识别应用中,人脸图像的数量是有限的。在本文中,我们提出了ComplexFace,一种新颖的和有效的算法,人脸识别有限的样本使用复数为基础的数据增强。该算法首先从原始样本中产生新的表示,然后将两者融合成复数,避免了其他融合方法中权重设置的困难。然后,测试样本可以由所有训练样本的线性组合表示,该线性组合将样本映射到新的表示空间,以便通过核函数进行分类。然后构建基于协作表示的分类器来进行预测。在Georgia Tech(GT)人脸数据库和ORL人脸数据库上的实验表明,该算法的性能明显优于现有方法:在GT人脸数据库上,平均错误率从31.66%~ 41.75%降低到14.54%;在ORL数据库上,以前方法的平均误差从5.21%到10.99%降低到1.67%。换句话说,我们的算法在ORL数据库上减少了高达84.80%的平均错误。

英文摘要:

State-of-the-art face recognition algorithms are able to achieve good performance when sufficient training images are provided. Unfortunately, the number of facial images is limited in some real face recognition applications. In this paper, we propose ComplexFace, a novel and effective algorithm for face recognition with limited samples using complex number based data augmentation. The algorithm first generates new representations from original samples and then fuse both into complex numbers, which avoids the difficulty of weight setting in other fusion approaches. A test sample can then be expressed by the linear combination of all the training samples, which mapped the sample to the new representation space for classification by the kernel function. The collaborative representation based classifier is then built to make predictions. Extensive experiments on the Georgia Tech (GT) face database and the ORL face database show that our algorithm significantly outperforms existing methods: the average errors of previous approaches ranging from 31.66% to 41.75% are reduced to 14.54% over the GT database; the average errors of previous approaches ranging from 5.21% to 10.99% are reduced to 1.67% over the ORL database. In other words, our algorithm has decreased the average errors by up to 84.80% on the ORL database.

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。

↑