KR102086081B1 - 다변측량을 이용한 디바이스의 위치 확인 - Google Patents
다변측량을 이용한 디바이스의 위치 확인 Download PDFInfo
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Abstract
Description
도 1은 다수의 고도에 있는 추출된 수평 슬라이스들, 및 추출된 슬라이스들로부터의 식별된 2차원 이미지들을 갖는 깊이 맵 이미지의 일례를 도시하고 있다.
도 2는 지문 데이터베이스 내의 인코딩된 지문의 일례를 도시하고 있다.
도 3은 도 2의 인코딩된 지문의 선 피처 지오메트리의 일례를 도시하고 있다.
도 4는 도 2의 인코딩된 지문의 원호 피처 지오메트리의 일례를 도시하고 있다.
도 5는 도 2의 인코딩된 지문의 스플라인(spline) 피처 지오메트리의 일례를 도시하고 있다.
도 6은 차량을 둘러싸는 피처 지오메트리들을 식별하고 추출하여 차량의 지리적 위치를 결정하는 차량의 일례를 도시하고 있다.
도 7A 및 도 7B는 디바이스를 둘러싸는 피처 지오메트리들 및 제어점들을 식별하고 추출하여 디바이스의 지리적 위치를 결정하는 디바이스의 추가 예를 도시하고 있다.
도 8은 3개의 제어점에 기초한 다변측량 처리의 다른 예를 도시하고 있다.
도 9는 다변측량 기술을 통한 디바이스의 위치를 결정하기 위한 예시적인 플로차트를 도시하고 있다.
도 10은 디바이스의 위치를 결정하기 위한 추가의 예시적인 플로차트를 도시하고 있다.
도 11은 예시적인 지리 및/또는 항법 데이터 시스템의 도면이다.
도 12는 도 11의 예시적인 시스템에서 사용되는 디바이스의 구성요소들의 실시예를 도시하고 있다.
이름 | 형상 | 크기 | 고도 | 변동 | 등급값 | 최종 등급 |
피처 1 | 참 | 참 | 참 | 참 | 1.0 | 1 |
피처 2 | 거짓 | 참 | 거짓 | 거짓 | 0.25 | 4 |
피처 3 | 참 | 참 | 참 | 거짓 | 0.50 | 3 |
피처 4 | 거짓 | 참 | 거짓 | 참 | 0.75 | 2 |
Claims (15)
- 방법으로서,
최종 사용자 디바이스(end-user device)에 의해, 경로망(path network) 내의 위치에서의 3차원 깊이 맵을 수집하는 단계;
상기 최종 사용자 디바이스의 프로세서를 사용하여, 상기 3차원 깊이 맵으로부터 2차원 피처 지오메트리(two-dimensional feature geometry)들을 추출하는 단계;
추출된 2차원 피처 지오메트리들 내의 다수의 제어점을 식별하는 단계;
상기 최종 사용자 디바이스와 식별된 제어점들 간의 거리를 계산하는 단계;
상기 최종 사용자 디바이스로부터 외부에 있는 데이터베이스로부터, 각각의 식별된 제어점에 대해 위도값 및 경도값과, 고도(elevation) 또는 표고(altitude)의 값을 포함하는 위치 참조 정보(location reference information)를 수신하는 단계; 및
상기 식별된 제어점들의 상기 위치 참조 정보 및 상기 최종 사용자 디바이스와 각각의 식별된 제어점 간의 계산된 거리를 이용한 다변측량(multilateration) 계산을 통해 상기 경로망 내의 상기 최종 사용자 디바이스의 지리적 위치를 결정하는 단계
를 포함하고,
상기 3차원 깊이 맵은 하나 이상의 수평 세그먼트들로 분할되고, 각각의 수평 세그먼트는 상이한 고도에 대응되며, 각각의 수평 세그먼트는 두께를 갖는, 방법. - 제1항에 있어서, 상기 식별된 제어점들의 수는 적어도 3개인, 방법.
- 제1항에 있어서, 상기 식별된 제어점들의 수는 적어도 2개이고, 상기 지리적 위치를 결정하는 단계는 상기 위치의 다변측량 알고리즘과 위성 위치 확인 시스템(GPS) 데이터의 조합을 포함하는, 방법.
- 제1항에 있어서, 상기 2차원 피처 지오메트리들은 곡선들, 원호들 또는 스플라인(spline)들 중 하나 이상을 포함하는, 방법.
- 제4항에 있어서, 상기 2차원 피처 지오메트리들을 추출하는 단계는, 곡선형 회귀 알고리즘을 사용하는, 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 3차원 깊이 맵을 복수의 수평 세그먼트들로 슬라이싱하는 단계를 더 포함하는, 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 각각의 상기 수평 세그먼트는 0.1 내지 2 미터의 두께를 갖는, 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 각각의 상기 수평 세그먼트는 정의된 선택된 고도에서의 데이터뿐만 아니라 상기 선택된 고도 위 및 아래의 범위 내에 존재하는 데이터를 포함하는, 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서,
2차원 피처 지오메트리들을 식별하기 위해 제1 고도에서 제1 수평 세그먼트를 분석하는 단계; 및
상기 제1 수평 세그먼트에서 유용한 2차원 피처 지오메트리들이 식별되지 않는 경우, 제2 고도에서 제2 수평 세그먼트로부터의 2차원 피처 지오메트리들을 추출하는 단계를 더 포함하는, 방법. - 제1항에 있어서, 상기 3차원 깊이 맵은 상기 최종 사용자 디바이스의 깊이 감지 디바이스를 사용하여 수집되고, 상기 깊이 감지 디바이스는 LIDAR 카메라, RADAR 디바이스, 초음파 디바이스, 구조 광(structure light) 카메라, 및 이동식 모노-카메라(moving mono-camera)로 이루어진 군으로부터 선택되는, 방법.
- 제1항에 있어서, 상기 최종 사용자 디바이스는 차량인, 방법.
- 제1항에 있어서, 상기 수신하는 단계 전에, 상기 추출된 2차원 피처 지오메트리들을 상기 최종 사용자 디바이스로부터 외부에 있는 상기 데이터베이스에 전송하는 단계를 더 포함하는, 방법.
- 방법으로서,
최종 사용자 디바이스로부터, 경로망 내의 위치에 대한 3차원 깊이 맵의 추출된 2차원 피처 지오메트리들을 수신하는 단계;
프로세서를 사용하여, 상기 경로망에 대한 데이터베이스 내의 다수의 2차원 피처 지오메트리와 상기 추출된 2차원 피처 지오메트리들을 정합시키는 단계;
상기 데이터베이스로부터, 정합된 2차원 피처 지오메트리들의 점들에 대해 위도값 및 경도값과, 고도(elevation) 또는 표고(altitude)의 값을 포함하는 위치 참조 정보를 검색하는 단계; 및
상기 위치 참조 정보를 상기 최종 사용자 디바이스에 전송하는 단계
를 포함하고,
상기 3차원 깊이 맵은 하나 이상의 수평 세그먼트들로 분할되고, 각각의 수평 세그먼트는 상이한 고도에 대응되며, 각각의 수평 세그먼트는 두께를 갖는, 방법. - 장치로서,
적어도 하나의 프로세서; 및
하나 이상의 프로그램에 대한 컴퓨터 프로그램 코드를 포함하는 적어도 하나의 메모리
를 포함하고,
상기 적어도 하나의 메모리 및 상기 컴퓨터 프로그램 코드는, 상기 적어도 하나의 프로세서에 의해, 상기 장치가, 적어도, 제1항 내지 제5항 및 제10항 내지 제13항 중 어느 한 항에 따른 방법을 수행하도록 구성되는, 장치. - 하나 이상의 프로그램에 대한 컴퓨터 프로그램 코드를 포함하는 컴퓨터 판독 가능한 저장 매체로서,
상기 컴퓨터 프로그램 코드는 적어도 하나의 프로세서가, 적어도, 제1항 내지 제5항 및 제10항 내지 제13항 중 어느 한 항에 따른 방법을 수행하게 하도록 구성되는, 컴퓨터 판독 가능한 저장 매체.
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