公开(公告)号：US08903137B1

公开(公告)日：2014-12-02

申请号：US13661598

申请日：2012-10-26

Applicant: Google Inc.

Inventor： Hong Guo ,  Aaron David Yonas ,  David Marwood

IPC: G06K9/00 ,  G06K9/50

CPC classification number: G06K9/6254 ,  G06K9/00651

Abstract: Systems and methods for associating geographic coordinates with one or more points in a digital geographic image, such as a satellite image, aerial image, ground based image, street level image or other suitable geographic image are provided. More particularly, a digital geographic image can be analyzed to identify one or more features that may be suitable as measurement points for collecting measured ground truth data. The one or more features can be described as a mathematical model that defines image coordinates along the feature depicted in the digital geographic image with sub-pixel accuracy. Image coordinates can be assigned to the measurement points with sub-pixel accuracy using the mathematical model. Collected ground truth data can then be associated with the identified image coordinates to allow for the more precise association of geographic coordinate information to points in the digital geographic imagery.

Abstract translation: 提供了用于将地理坐标与数字地理图像中的一个或多个点相关联的系统和方法，例如卫星图像，空中图像，地面图像，街道图像或其他合适的地理图像。 更具体地，可以分析数字地理图像以识别可以适合作为用于收集测量的地面真值数据的测量点的一个或多个特征。 一个或多个特征可以被描述为一种数学模型，其定义沿着具有子像素精度的数字地理图像中描绘的特征的图像坐标。 使用数学模型，可以使用子像素精度将图像坐标分配给测量点。 然后，收集的地面真实数据可以与所识别的图像坐标相关联，以允许将地理坐标信息与数字地理图像中的点更精确地相关联。