Implicit identity authentication method based on gait features

Abstract

The invention discloses an implicit identity authentication method based on gait features. Gait features extracted by an existing identity authentication method are limited, and the authentication accuracy is low. According to the method, data preprocessing is performed on an acquired gait sequence by fusing data of various motion sensors, and a gait data set is expanded by combining signals of different frequency components. According to the method, the two stages of firstly recognizing the activity scene and then authenticating the user identity are adopted, original gait data are input into the constructed classification model, and the optimal classification model is obtained through training. The obtained gait sequence is input into the trained activity scene classification model after being preprocessed, and the user classification model in the corresponding scene is called according to the judgment of the activity scene, so that whether the current user is a legal user or not can be judged. According to the method, multi-motion sensor data are fused, different types of gait data are combined, the change of an actual use scene can be coped, the authentication accuracy is further improved, and the actual usability of the method is enhanced.

Description

Technical field [0001] The invention belongs to the technical fields of biometric authentication and information security, especially the field of implicit identity authentication, and specifically relates to an implicit identity authentication method based on gait characteristics. Background technique [0002] With the development and popularity of smartphones, it has become an indispensable part of people's work, life and entertainment. Smartphones store a large amount of users' private data, including private information such as address books, photos, chat records, and bank account passwords. Once leaked, it will pose a threat to the user's personal and property security, so identity authentication technology was proposed. [0003] Explicit identity authentication is an important branch of identity authentication technology, including password-based and physiological characteristics-based identity authentication methods. The password-based authentication method means tha...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an authentication method based on the fact that the actual usage scenarios are complicated and changeable, the carrying methods are different, the accuracy of the existing authentication methods is not high, and the actual usability is not strong. The implicit identity authentication method based on gait features, which integrates multiple sensor data and multi-type signals as input, constructs a two-stage identity authentication framework that first classifies activity scenes and then classifies users, further improving the accuracy of user authentication

Images