公开(公告)号：US09625612B2

公开(公告)日：2017-04-18

申请号：US14021222

申请日：2013-09-09

Applicant: Google Inc.

Inventor： Brian Edmond Brewington ,  Bryan M. Klingner ,  David Martin ,  Kirk L. Johnson

IPC: G01C21/00 ,  G01D21/00 ,  G06F17/40 ,  G06F19/00 ,  G01V11/00 ,  G01C21/36 ,  G06K9/00 ,  G06T7/00

CPC classification number: G01V11/00 ,  G01C21/00 ,  G01C21/005 ,  G01C21/3644 ,  G01C21/3694 ,  G01D21/00 ,  G01S17/89 ,  G06F17/40 ,  G06F19/00 ,  G06K9/00664 ,  G06K9/00671 ,  G06T7/73 ,  G06T17/05

Abstract: Systems and methods for identifying prominent landmarks in a geographic area are provided. More particularly, geographic imagery data, such as panoramic images captured by a camera from a perspective at or near ground level, can be analyzed to identify landmarks depicted in the geographic imagery data. For instance, structure-from-motion techniques can be used to generate a point cloud of tracked features that are located a threshold distance away from one or more camera perspectives associated with the geographic imagery data. Landmarks that are visible from multiple camera perspectives and that are visible from greater distances relative to one or more camera perspectives can be identified as prominent landmarks in a geographic area. A geographic information system can use the prominent landmarks for a variety of purposes, such as for use in providing travel directions, for rendering landmarks in an emphasized style, and/or for constructing/displaying a three-dimensional model of the landmark.

公开(公告)号：US20170219370A1

公开(公告)日：2017-08-03

申请号：US15488540

申请日：2017-04-17

Applicant: Google Inc.

Inventor： Brian Edmont Brewington ,  Bryan M. Klingner ,  David Martin ,  Kirk L. Johnson

IPC: G01C21/36 ,  G01S17/89 ,  G01C21/00 ,  G06K9/00 ,  G06F17/40 ,  G06T17/05 ,  G06T7/73

CPC classification number: G01V11/00 ,  G01C21/00 ,  G01C21/005 ,  G01C21/3644 ,  G01C21/3694 ,  G01D21/00 ,  G01S17/89 ,  G06F17/40 ,  G06F19/00 ,  G06K9/00664 ,  G06K9/00671 ,  G06T7/73 ,  G06T17/05

Abstract: Systems and methods for identifying prominent landmarks in a geographic area are provided. More particularly, geographic imagery data, such as panoramic images captured by a camera from a perspective at or near ground level, can be analyzed to identify landmarks depicted in the geographic imagery data. For instance, structure-from-motion techniques can be used to generate a point cloud of tracked features that are located a threshold distance away from one or more camera perspectives associated with the geographic imagery data. Landmarks that are visible from multiple camera perspectives and that are visible from greater distances relative to one or more camera perspectives can be identified as prominent landmarks in a geographic area. A geographic information system can use the prominent landmarks for a variety of purposes, such as for use in providing travel directions, for rendering landmarks in an emphasized style, and/or for constructing/displaying a three-dimensional model of the landmark.

公开(公告)号：US20150073711A1

公开(公告)日：2015-03-12

申请号：US14021222

申请日：2013-09-09

Applicant: Google Inc.

Inventor： Brian Edmond Brewington ,  Bryan M. Klingner ,  David Martin ,  Kirk L. Johnson

IPC: G01V11/00

CPC classification number: G01V11/00 ,  G01C21/00 ,  G01C21/005 ,  G01C21/3644 ,  G01C21/3694 ,  G01D21/00 ,  G01S17/89 ,  G06F17/40 ,  G06F19/00 ,  G06K9/00664 ,  G06K9/00671 ,  G06T7/73 ,  G06T17/05

Abstract: Systems and methods for identifying prominent landmarks in a geographic area are provided. More particularly, geographic imagery data, such as panoramic images captured by a camera from a perspective at or near ground level, can be analyzed to identify landmarks depicted in the geographic imagery data. For instance, structure-from-motion techniques can be used to generate a point cloud of tracked features that are located a threshold distance away from one or more camera perspectives associated with the geographic imagery data. Landmarks that are visible from multiple camera perspectives and that are visible from greater distances relative to one or more camera perspectives can be identified as prominent landmarks in a geographic area. A geographic information system can use the prominent landmarks for a variety of purposes, such as for use in providing travel directions, for rendering landmarks in an emphasized style, and/or for constructing/displaying a three-dimensional model of the landmark.

Abstract translation: 提供了用于识别地理区域中的突出地标的系统和方法。 更具体地，可以分析地理图像数据，例如由摄像机从地面或附近的角度拍摄的全景图像，以识别地理图像数据中描绘的地标。 例如，可以使用运动结构技术来产生跟踪特征的点云，其位于距离与地理图像数据相关联的一个或多个相机视角的阈值距离处。 从多个相机透视图可见的并且相对于一个或多个相机透视图的距离可见的地标可以被识别为地理区域中的突出的地标。 地理信息系统可以使用突出的地标进行各种目的，例如用于提供旅行方向，用于渲染强调风格的地标和/或用于构建/显示地标的三维模型。