KR101867041B1 - 운전자의 안전한 운전상태 검측 방법 및 장치 - Google Patents
운전자의 안전한 운전상태 검측 방법 및 장치 Download PDFInfo
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- KR101867041B1 KR101867041B1 KR1020167019558A KR20167019558A KR101867041B1 KR 101867041 B1 KR101867041 B1 KR 101867041B1 KR 1020167019558 A KR1020167019558 A KR 1020167019558A KR 20167019558 A KR20167019558 A KR 20167019558A KR 101867041 B1 KR101867041 B1 KR 101867041B1
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Abstract
Description
도 2는 본 발명 장치를 응용한 후의 프레임 구조도이고;
도 3은 본 발명에 있어서 구체적인 응용 실례 중 구체적인 사용 상태 하에서의 실제 장면 설명도이고;
도 4는 실제 장면 중 시스템 전방 시야 카메라의 시야 및 세 가지 주의분포구역 설명도이고;
도 5는 본 발명에 있어서 구체적인 응용 실례 중 시스템 보정을 진행하는 흐름도이고;
도 6은 본 발명에 있어서 구체적인 응용 실례 중 의미 있는 교통사건과 현저성을 가진 운전자 주의력 계산 흐름도이고;
도 7은 본 발명에 있어서 구체적인 응용 실례 중 운전자 안전 상태 분석을 진행하는 흐름도이고;
도 8은 본 발명에 있어서 구체적인 응용 실례 중 모형 계수 훈련을 진행하는 흐름도이고;
도 9는 본 발명에 있어서 구체적인 응용 실례 중 장면이 다른 구역의 활성 정도에 대한 분석을 진행한 비교도이다.
Claims (7)
- 운전자의 안전한 운전상태 검측 방법에 있어서,
실시간으로 운전자의 현재 시선방향을 검측하고 차량 운전 중 운전자의 전방 시야 내의 장면 이미지 신호를 수집하는 단계 (1);
운전자의 생리적 피로 특성, 도로에 대한 차량의 상대적인 운행관계, 또는 자극-반응 모니터링 중 적어도 하나를 기초로 하는 시각 주의력 계산 모형을 기반으로, 수집한 현재 도로 장면 이미지 신호를 처리해 현재 도로 장면에서 운전자 기대 주의력 분포를 얻는 단계 (2);
상기 단계 (1)에서 실시간 검측한 운전자의 현재 시선방향과 상기 단계 (2)에서 계산해 얻은 운전자 기대 주의력 분포를 통합 분석한 후, 운전자가 현재 정상적인 운전상태에 있는지 및 돌발 도로 교통사건에 대해 즉각적이고 적절한 반응을 보일 수 있는지를 판단하는 단계 (3)을 포함하며;
상기 단계 (2)에 있어서 의미 있는 교통사건과 현저성을 기반으로 한 운전자 주의력 계산 방법을 채택하며, 구체적으로
이미지 수집을 가동하고, 현재 m × n 크기의 전방 시야 이미지를 저장하는 단계 (6.1);
3개의 동적 배열 P1, P2, P3을 저장하는 데 사용하는 크기가 m × n인 3개의 행렬 Map1, Map2, Map3을 생성하고, 상기 전방 시야 이미지는 3가지 유형의 운전자 응시구역을 포함하는데, 상기 3가지 유형중 첫 번째 유형은 교통사건 관련 응시구역 RO이고, 두 번째 유형은 전방 시야 이미지 중의 현저구역 RS이고, 세 번째 유형은 운전자가 항상 주시하는 고정구역 ROF이고, 상기 행렬 Map1, Map2, Map3은 상기 세 가지 유형의 구역을 저장하는 데 사용하는 단계 (6.2);
상기 ROF 유형 주의구역 {Ri OF}를 확정하고, 제1 프레임 주의분포도 Map1 을 생성하는 단계 (6.3);
상기 Map1 중의 구역을 순서대로 상기와 같은 구역의 인덱스를 상기 배열 P1 에 저장하는 단계 (6.4);
교통사건 관련 주의구역을 생성하고, 컴퓨터 시각 방법을 사용해 전방 도로, 차량, 행인, 교통표지 등 상기 RO유형 구역 {Ri Ok}을 검측 및 추적하고, 여기에서 상기 k=1, 2, 3, 4이고, 각각 전방 도로, 차량, 행인 및 교통표지 등 4가지 유형 구역을 나타내고, 제2 프레임 주의분포도 를 생성하는 단계 (6.5);
상기 Map2 중의 구역을 순서대로 상기와 같은 구역의 인덱스를 상기 배열 P2 에 저장하는 단계 (6.6);
시각 현저성 알고리듬에 의거해 전방 시야 이미지 I(t)의 현저 구역을 계산하고, 이진화된 구역 {Ri S}의 현저도 Map3 을 생성하는 단계 (6.7);
상기 Map3 중 구역의 대응하는 인덱스를 순서대로 상기 배열 P3 에 저장하는 단계 (6.8)를 포함하고;
상기 단계 (3)에 있어서, 교통 관련 구역 및 현저성 구역과 운전자 주의력 분배의 상호 작용 과정에 대해 통일된 모형을 구축하고,
여기에서 생리학 중의 뉴런 활성 설명 방법을 이용해, 상기 구역의 "주의가 필요한" 정도를 구역의 활성으로 모형을 구축하고, V로 표시하고, 운전자가 상기 구역에 주의를 기울이지 않을 경우 상기 구역의 활성 V는 일정한 규칙에 따라 상승하고; 운전자가 시선을 특정 구역에 둘 때 상기 구역의 활성은 신속하게 낮아질 수 있고; 상기 제1 유형 구역은 운전자 주의가 필요한 곳으로서, 만약 상기 구역이 장시간 주목을 받지 못할 경우 활성 V가 크게 상승하고, 일정 한계값을 넘어설 경우 경고가 나가고; 상기 제2 유형 구역은 운전자가 장시간 주의하지 않아야 하는 곳으로서, 만약 운전자가 상기 구역에 장시간 응시할 경우 그 활성 V가 지속적으로 하락하고 일정한 한계값보다 낮아질 경우 경고가 나가고;
상기 제1 유형 구역의 경우, 그 활성은 시간 진화 규칙에 따라 아래 동적 과정과 같은 모형을 구축하고,
(1)
상기 제2 유형 구역의 경우, 그 활성은 시간 진화 규칙에 따라 아래와 같은 모형을 구축하고,
(2)
상기 방정식 (1) 및 (2)에서 알 수 있듯이, 상기 방정식 (1) 중의 활성 V의 초기값이 0 내지 1+μ이거나 상기 방정식 (2) 중의 활성 V의 초기값이 -ν 내지 1일 경우, 상기 활성 V는 0 내지 1+μ이거나 -ν 내지 1 사이에서 진화하고, 여기에서 상기 μ, ν의 값은 1이고;
상기 방정식 (1)에 있어서 상기 V의 진화 초기값은 0이고, 경고 한계값은 1이고; 상기 방정식 (2)에 있어서 V의 진화 초기값은 1이고 경고 한계값은 0이고; 상기 두 방정식에 있어서 α’는 활성 누설인자이고, 본 모형에서 0을 취하고; 상기 Ø, , β는 모두 특정 구역의 대응하는 양의 진화 계수이고, 상기 Ø, 는 활성의 진화에 대해 억제 작용을 가지고, 상기 β는 활성 증가의 작용을 가지고, 여기에서 상기 , β는 값과 상기 구역의 유형은 관계가 있고; 상기 Ø의 값은 구역 유형과 관련이 있을 뿐만 아니라 현재 운전자 시선이 떨어지는 구역과도 관계가 있는 것을 특징으로 하는 운전자의 안전한 운전상태 검측 방법. - 제 1항에 있어서,
정량 방식을 이용해 운전자가 즉각적으로 현재 장면 중의 중요 교통사건에 반응할 수 있는지 여부를 평가하고,
임의 한 시점에서 정량 평가는 구체적으로 운전자의 시선이 장면 중의 중요한 교통사건이 위치한 구역에 진입했는지 및 진입 비율과 신속정도를 판단하는 것을 특징으로 하는 운전자의 안전한 운전상태 검측 방법. - 제 1항에 있어서,
한 대의 시선 포착 설비를 이용해 운전자의 현재 시선방향을 실시간으로 검측하고, 한 대의 차량 전방 시야 카메라를 통해 운전 중 운전자의 전방 시야 내에서의 장면 이미지 신호를 실시간으로 수집하는 것을 특징으로 하는 운전자의 안전한 운전상태 검측 방법. - 삭제
- 삭제
- 제 3항에 있어서,
전방 시야 카메라에서 얻은 도로 장면과 시선 포착 설비에서 포착한 운전자 시선 간의 보정을 진행해, 상기 시선 포착 설비에서 포착해 얻은 운전자 시선이 주시하는 장면 타깃의 위치를 상기 타깃이 전방 시야 카메라에서 나타내는 위치와 대응하도록 일치시키는 것을 특징으로 하는 운전자의 안전한 운전상태 검측 방법. - 삭제
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