基于多层级精细特征融合的步态识别算法  

Gait recognition algorithm based on multi-layer refined feature fusion

作　　者：刘瑞华 郝子赫 邹洋杨 LIU Ruihua;HAO Zihe;ZOU Yangyang(School of Artificial Intelligence,Chongqing University of Technology,Chongqing 401135,China)

机构地区：[1]重庆理工大学两江人工智能学院,重庆401135

出　　处：《计算机应用》2024年第7期2250-2257,共8页journal of Computer Applications

基　　金：重庆市自然科学基金资助项目(CSTB2023NSCQ-MSX0319);重庆理工大学研究生创新项目(gzlcx20223457)。

摘　　要：随着深度学习的引入,步态识别算法取得了很大的突破,但是仍存在忽略了浅层网络提取的细节信息,以及对不限时长的步态视频时空信息难以融合的问题。为了有效利用浅层特征和融合时空特征,提出一种基于多层级精细特征融合的跨视角步态识别算法。所提算法由两个部分组成:边缘运动捕捉模块(EMCM)用于提取包含时间信息的边缘运动特征;多层级特征提取模块(MFEM)用于提取包含不同粒度全局和局部信息的多层级精细特征。首先,使用EMCM和MFEM分别提取多层级精细特征和边缘运动特征;然后,将两个模块提取的特征融合得到具有鉴别性的步态特征;最后,在公开数据集CASIA-B上和OU-MVLP上进行多种情况下的对比实验。在CASIA-B上平均识别准确率可达89.9%,与GaitPart相比,所提算法的平均识别准确率提升了1.1个百分点;在OU-MVLP上90°视角下比GaitSet识别准确率提升了3.0个百分点。所提算法能够有效地提升多种情况下的步态识别的准确率。Deep learning has further promoted the research of gait recognition algorithms,but there are still some problems,such as ignoring the detailed information extracted by shallow networks,and difficulty in fusing unlimited timespace information of gait videos.In order to effectively utilize shallow features and fuse time-space features,a cross-view gait recognition algorithm based on multi-layer refined feature fusion was proposed.The proposed algorithm was consisted of two parts:Edge Motion Capture Module(EMCM)was used to extract edge motion features containing temporal information,Multi-layer refined Feature Extraction Module(MFEM)was used to extract multi-layer fine features containing global and local information at different granularities.Firstly,EMCM and MFEM were used to extract multi-layer fine features and edge motion features.Then,the features extracted from the two modules were fused to obtain discriminative gait features.Finally,comparative experiments were conducted in multiple scenarios on the public datasets CASIA-B and OU-MVLP.The average recognition accuracy on CASIA-B can reach 89.9%,which is improved by 1.1 percentage points compared with GaitPart.The average recognition accuracy is improved by 3.0 percentage points over GaitSet in the 90-degree view of the OU-MVLP dataset.The proposed algorithm can effectively improve the accuracy of gait recognition in many situations.

关 键 词：生物特征识别 步态识别 特征提取 步态轮廓序列 时空特征融合 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]