KR102737724B1 - 자율 주행 시스템 및 자율 주행 방법 - Google Patents
자율 주행 시스템 및 자율 주행 방법 Download PDFInfo
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- KR102737724B1 KR102737724B1 KR1020200109296A KR20200109296A KR102737724B1 KR 102737724 B1 KR102737724 B1 KR 102737724B1 KR 1020200109296 A KR1020200109296 A KR 1020200109296A KR 20200109296 A KR20200109296 A KR 20200109296A KR 102737724 B1 KR102737724 B1 KR 102737724B1
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Abstract
Description
도 2은 일 실시예에 따른 자율 주행 시스템의 구성을 도시한다.
도 3은 일 실시예에 따른 자율 주행 시스템에 포함된 카메라 및 레이더를 도시한다.
도 4는 일 실시예에 따른 자율 주행 방법의 순서도이다.
도 5는 일 실시예에 따른 자율 주행 시스템이 획득한 전방 영상 데이터와 고정밀 지도를 나타낸 도면이다.
도 6 내지 도 10은 고정밀 지도에 오류가 있는 것으로 판단될 수 있는 상황을 도시한 도면이다.
110: 전방 카메라 120: 전방 레이더
130: 복수의 코너 레이더들 131: 제1 코너 레이더
132: 제2 코너 레이더 133: 제3 코너 레이더
134: 제4 코너 레이더 135: 라이다
140: 제어부 150: 통신부
Claims (20)
- 차량에 설치되어, 상기 차량의 전방 시야를 가지며, 전방 영상 데이터를 획득하는 제1 센서;
레이더와 라이다로 구성된 그룹에서 선택되어, 상기 차량에 설치되며, 상기 차량의 전방의 감지 시야를 가지고, 전방 감지 데이터를 획득하는 제2 센서;
상기 차량의 현재 위치에서의 고정밀 지도(High Definition Map)를 수신하는 통신부; 및
상기 고정밀 지도와 상기 전방 영상 데이터와 상기 전방 감지 데이터를 처리하는 프로세서를 포함하는 제어부;를 포함하고,
상기 제어부는,
상기 전방 영상 데이터와 상기 전방 감지 데이터를 처리한 것에 응답하여 상기 차량과 우측 도로경계선 사이의 제1 거리 및 상기 차량과 좌측 도로경계선 사이의 제2 거리를 산출하고,
상기 고정밀 지도를 처리한 것에 응답하여 상기 차량과 상기 우측 도로경계선 사이의 제3 거리 및 상기 차량과 상기 좌측 도로경계선 사이의 제4 거리를 산출하고,
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하되, 상기 제1 거리와 상기 제3 거리의 차이 또는 상기 제2 거리와 상기 제4 거리의 차이 중 적어도 하나를 기초로 상기 고정밀 지도 상의 상기 차량의 좌표를 보정하여 상기 지도 품질 지수를 결정하고,
상기 지도 품질 지수에 기초하여 상기 고정밀 지도의 오류를 판단하는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 지도 품질 지수가 미리 설정된 임계 값 이하이면 상기 고정밀 지도에 오류가 있는 것으로 판단하는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 제1 미리 설정된 값 이상이면 상기 지도 품질 지수를 감소시키는 자율 주행 시스템. - 제3항에 있어서,
상기 제어부는,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 상기 제1 미리 설정된 값보다 작은 제2 미리 설정된 값 이하이면 상기 지도 품질 지수를 향상시키는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 제2 거리와 상기 제4 거리 사이의 평균 제곱근 오차(RMSE)가 제1 미리 설정된 값 이상이면 상기 지도 품질 지수를 감소시키는 자율 주행 시스템. - 제5항에 있어서,
상기 제어부는,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 상기 제1 미리 설정된 값보다 작은 제2 미리 설정된 값 이하이면 상기 지도 품질 지수를 향상시키는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 전방 영상 데이터와 상기 전방 감지 데이터를 처리한 것에 응답하여 검출된 차선의 색상 또는 모양이 상기 고정밀 지도를 처리한 것에 응답하여 획득된 차선의 색상 또는 모양과 상이하면 상기 지도 품질 지수를 감소시키는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차와 상기 제2 거리와 상기 제4 거리 사이의 평균 제곱근 오차의 합이 최소가 되도록 상기 고정밀 지도 상에서의 상기 차량의 좌표를 결정하는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 고정밀 지도에 오류가 있는 것으로 판단되면 상기 차량의 제어권을 운전자에게 이양하는 자율 주행 시스템. - 제1항에 있어서,
상기 제어부는,
상기 고정밀 지도에 오류가 있는 것으로 판단되면 상기 통신부를 제어하여 상기 전방 영상 데이터 또는 상기 전방 감지 데이터 중 적어도 하나가 외부 서버로 전송되도록 하는 자율 주행 시스템. - 차량에 설치되어 상기 차량의 전방 시야를 가지는 전방 카메라가, 전방 영상 데이터를 획득하고;
상기 차량의 현재 위치에서의 고정밀 지도를 수신하고;
상기 전방 영상 데이터를 처리한 것에 응답하여 상기 차량과 우측 도로경계선 사이의 제1 거리 및 상기 차량과 좌측 도로경계선 사이의 제2 거리를 산출하고;
상기 고정밀 지도를 처리한 것에 응답하여 상기 차량과 상기 우측 도로경계선 사이의 제3 거리 및 상기 차량과 상기 좌측 도로경계선 사이의 제4 거리를 산출하고;
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하고;
상기 지도 품질 지수에 기초하여 상기 고정밀 지도의 오류를 판단하는 것;을 포함하며,
상기 고정밀 지도의 상기 지도 품질 지수를 결정하는 것은,
상기 제1 거리와 상기 제3 거리의 차이 또는 상기 제2 거리와 상기 제4 거리의 차이 중 적어도 하나를 기초로 상기 고정밀 지도 상의 상기 차량의 좌표를 보정하여 상기 지도 품질 지수를 결정하는 것을 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 지도 품질 지수에 기초하여 상기 고정밀 지도의 오류를 판단하는 것은,
상기 지도 품질 지수가 미리 설정된 임계 값 이하이면 상기 고정밀 지도에 오류가 있는 것으로 판단하는 것;을 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하는 것은,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 제1 미리 설정된 값 이상이면 상기 지도 품질 지수를 감소시키는 것;을 포함하는 자율 주행 방법. - 제13항에 있어서,
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하는 것은,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 상기 제1 미리 설정된 값보다 작은 제2 미리 설정된 값 이하이면 상기 지도 품질 지수를 향상시키는 것;을 더 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하는 것은,
상기 제2 거리와 상기 제4 거리 사이의 평균 제곱근 오차(RMSE)가 제1 미리 설정된 값 이상이면 상기 지도 품질 지수를 감소시키는 것;을 포함하는 자율 주행 방법. - 제15항에 있어서,
상기 제1 거리, 상기 제2 거리, 상기 제3 거리 및 상기 제4 거리에 기초하여 상기 고정밀 지도의 지도 품질 지수를 결정하는 것은,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차(RMSE)가 상기 제1 미리 설정된 값보다 작은 제2 미리 설정된 값 이하이면 상기 지도 품질 지수를 향상시키는 것;을 더 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 전방 영상 데이터를 처리한 것에 응답하여 검출된 차선의 색상 또는 모양이 상기 고정밀 지도를 처리한 것에 응답하여 획득된 차선의 색상 또는 모양과 상이하면 상기 지도 품질 지수를 감소시키는 것;을 더 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 제1 거리와 상기 제3 거리 사이의 평균 제곱근 오차와 상기 제2 거리와 상기 제4 거리 사이의 평균 제곱근 오차의 합이 최소가 되도록 상기 고정밀 지도 상에서의 상기 차량의 좌표를 결정하는 것;을 더 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 고정밀 지도에 오류가 있는 것으로 판단되면 상기 차량의 제어권을 운전자에게 이양하는 것;을 더 포함하는 자율 주행 방법. - 제11항에 있어서,
상기 고정밀 지도에 오류가 있는 것으로 판단되면 상기 전방 영상 데이터가 외부 서버로 전송되도록 제어하는 것;을 더 포함하는 자율 주행 방법.
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