Method and device for three-dimensional measurement and calculation of geographic position of target object based on street scene map

Abstract

The invention discloses a method and device for three-dimensional measurement and calculation of the geographic position of a target object based on a street scene map. The method comprises the steps that one target object is firstly selected in the street scene map, and two appropriate view points are selected according to the target object; in each view point, the bottom / top of the target object is adjusted to the center position of the street scene map, and viewing angle parameters from the view points to the bottom / top of the target object are obtained; according to the longitudes and latitudes of the view points and the viewing angles formed by the view points and the bottom of the target object, two spatial straight lines are determined, and an intersection point of the two straight lines is calculated, wherein the intersection point is the longitude and latitude of the target object in the actual geographic space; the distances from the view points and the target object to a horizontal plane are calculated according to the longitudes and latitudes of the view points and the obtained longitude and latitude of the target object, and then the relative heights from the view points to the top and bottom of the target object are calculated according to pitch angles formed by the view points and the top and bottom of the target object, wherein the two relative heights are the actual heights of the target object. The method is conductive to further application of existing street scene resources on the aspects of smart city and intelligent transportation.

Description

technical field [0001] The present invention relates to the fields of street view map, electronic cartography, photogrammetry, GIS, Web service, computer graphics, etc. Its purpose is to realize the direct measurement of the actual geographical position of the target object in the street view map on the basis of the existing street view map resources . It specifically involves Http requests, the determination of spatial straight lines in the polar coordinate system, and the intersection of front and so on. Background technique [0002] Street View is a reality map service. Provide users with a city, street or other environment with a street panorama of 360° in the horizontal direction and 180° in the vertical direction, so that the user can view the different positions of the street on the ground of the selected city and the scenery on both sides. It is a three-dimensional virtual display technology that uses multiple cameras to collect multi-angle images of the real scene...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the existing street view map cannot realize the acquisition of information such as the actual geographic location and height of the target object in the street view picture

Images