City component positioning method and device and vehicle-mounted mobile measurement system

Abstract

The invention provides a city component positioning method and device and a vehicle-mounted mobile measurement device. The method comprises the steps of obtaining an image of the current street view,images of adjacent street views and corresponding GPS phase center coordinate data and space posture data; extracting at least one appointed city component; respectively obtaining a first pixel pointcoordinate and a second pixel point coordinate, of the same name, of the same city component; and calculating spatial geographic coordinates of the city components on the basis of a forward intersection method by combining a spatial calibration parameter and the corresponding GPS phase center coordinate data and space posture data according to the first pixel point coordinate and the second pixelpoint coordinate. The method is capable of carrying out automatic recognition and rapid positioning of the city components, so that the automatic updating of the appointed city components is realizedand the fussy artificial recognition and edition work is avoided, thereby greatly improving the updating efficiency, in related thematic maps, of the city components, and providing reliable guaranteefor the thematic application of the departments such as traffic, firefighting, public security and the like.

Description

technical field [0001] The present invention relates to the technical field of photogrammetry, and more specifically relates to a positioning method and device for urban components and a vehicle-mounted mobile measurement system. Background technique [0002] Digital urban management technology is an organic combination of information technology and urban management, which makes urban management change to the direction of informatization, digitization, and networking. Urban component information is the necessary basic information for realizing digital urban management. Urban components are materialized urban management objects, mainly including roads, bridges, water, electricity, gas, heat and other municipal public facilities, as well as parks, green spaces, leisure, fitness and entertainment facilities, etc. Public facilities also include some non-public facilities such as door signs and advertising plaques. [0003] At present, urban component information is mainly obtai...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a positioning method and device for urban components, and a vehicle-mounted mobile measurement system to solve the problem of being unable to quickly and accurately locate urban components in the street view images collected by the vehicle-mounted mobile measurement and acquisition system in the prior art. positioning problem

Images