협력주행 지원을 위한 2D 인프라 카메라 기반의 실시간 차량 중심 추정 방법
Infrastructure 2D Camera-based Real-time Vehicle-centered Estimation Method for Cooperative Driving Support
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초록
기존의 자율주행 기술은 차량에 부착된 센서를 사용하여 환경을 감지하고 주행 계획을 수립하는 방식으로 개발되었으나, 악천후나 역광, 장애물로 인한 가려짐 등 특정 상황에서 성능이 저하되는 문제점이 있다. 이러한 문제점을 해결하기 위해 도로 인프라의 지원을 통해 자율주행 차량의 인지 범위를 확장하는 협력형 자율주행 기술이 주목받고 있으나, 단안 카메라에서는 국제 표준에서 요구하는 객체의 3D 중심점을 실시간으로 분석해내기 어렵다는 문제점이있다. 이에 본 논문에서는 도로 인프라의 고정된 화각과 사전에 측정된 기하학적 정보를 활용하여 객체를 검출하고 실시간으로 차량의 중심점을 추정하는 방법을 제안하였다. GPS 위치측정 장비를 활용하여 객체의 중심점을 효과적으로 추정할 수 있음을 확인하였으며, 제안된방법은 차량 및 도로 인프라 간의 협력형 자율주행 기술에 적용 가능하여, 협력형 자율주행인프라의 보급 및 확산에 기여할 수 있을 것으로 기대된다.
Abstract
Existing autonomous driving technology has been developed based on sensors attached to the vehicles to detect the environment and formulate driving plans. On the other hand, it has limitations, such as performance degradation in specific situations like adverse weather conditions, backlighting, and obstruction-induced occlusion. To address these issues, cooperative autonomous driving technology, which extends the perception range of autonomous vehicles through the support of road infrastructure, has attracted attention. Nevertheless, the real-time analysis of the 3D centroids of objects, as required by international standards, is challenging using single-lens cameras. This paper proposes an approach to detect objects and estimate the centroid of vehicles using the fixed field of view of road infrastructure and pre-measured geometric information in real-time. The proposed method has been confirmed to effectively estimate the center point of objects using GPS positioning equipment, and it is expected to contribute to the proliferation and adoption of cooperative autonomous driving infrastructure technology, applicable to both vehicles and road infrastructure.
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