안면인식과 OTAC를 사용한 스마트 출입통제 시스템
Smart Entrance Control System Using Face Recognition and OTAC
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초록
현대 사회에는 보안이 강화된 입출입 시스템이 중요한 요소로 자리 잡고 있다. 본 논문에서는 안면인식 카메라와 OTAC(One Time Access Code)를 이용한 실시간 구동 입출입 시스템을 제안한다. 특히, 임베디드 보드의 응답 속도에 초점을 맞추어 딜레이 없는 시스템을 구현한다. 현재 시판되는 대부분의 출입시스템은 RFID를 이용하여 사용자를 인증한다. RFID는 인증 시간이 빠르고, 사용자의 수용성이 높다는 장점이 있다. 하지만 타인이 도용하여 사용할 수 있기 때문에 취약점이 발생한다. 이를 대체할 인증 방식으로 생체 인식이 있으며 기술적 방식으로는 안면인식, 정맥인식, 홍채인식, 지문인식 등이 사용되고 있다. 본 논문에서 제안한 방식은 안면인식 기술과 OTAC 인증을 사용한다. 이를 깊이 정보 카메라와 클라우드 환경에 구축된 사용자 DB 서버를 연동하여 임베디드 보드 상에서 구현한다. 임베디드 시스템은 Raspberry Pi 3 Model B+, Arduino Due, Ubuntu 18.04 LTS 상에서 Python, C++, C, PHP를 사용해 구성하였으며 와이파이, 시리얼을 통해 상호 간 통신하였다. 또한 중요한 스펙 중 하나인 구동 속도는 300ms로, 설정 스펙에 부합하는 결과를 얻을 수 있었다. 본 시스템을 프로토타입으로 제작하여 시스템의 실용성 및 효율성을 입증한다.
Abstract
In modern society, security-enhanced access control systems are an important factor. In this paper real-time smart access control system using a face recognition camera and OTAC(One Time Access Code) is proposed. This system especially focuses on the response speed of the embedded board to implement a delay-free system. Most access control systems on the market uses RFID to authenticate users. RFID has the advantage of fast authentication time and high usability. However, system’s weak points arise because others can steal and manipulate them. There are biometric recognition methods as supplant method, such as facial recognition, vein matching, iris recognition and fingerprint recognition are used as technical methods. The method proposed in this paper uses facial recognition technology and OTAC authentication. This is implemented on the embedded board by linking the depth information camera and the user DB server which is built on cloud environment. The embedded system was designed using Python, C++, C and PHP on Raspberry Pi 3 Model B+, Ubuntu 18.04 LTS and Arduino Due. Then communicated with each other using Wi-Fi and Serial Communication. In addition, the driving speed, one of the important specs, was 300 ms, which resulted in conformity with the designed specification. This system’s prototype was manufactured to prove the practicality and efficiency of the system.
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