A precise positioning and street view database acquisition method based on terminal shooting image matching

Abstract

The invention provides an accurate positioning and streetscape library collecting method based on terminal shot image matching. The method comprises the following steps: acquiring a panoramic image near the current coordinates of a user through map APP of mobile phone, navigator and other terminal equipment to serve as a reference path graph, and acquiring a front high-definition real-time streetscape by utilizing a terminal camera module to serve as a correction path graph; calculating the user actual coordinates by adopting a feature point extraction matching and monocular distance measurement algorithm, and correcting the original coordinates; and adding longitude and latitude labels into the corrected correction path graph, and entering the streetscape library. The accurate positioningand streetscape library collecting method applied to the Internet time based on the increasing position service requirement can solve the problems of small panoramic map library coverage, untimely updating and high collection cost. Furthermore, optional points are increased, and image definition can be optimized when a user is positioned, visual positioning accuracy can be greatly promoted.

Description

technical field [0001] The invention relates to the fields of image processing and precise positioning, in particular to the technical fields of outdoor street scene collection and pedestrian navigation and positioning. Background technique [0002] In recent years, the development of map apps has brought a lot of convenience to pedestrians and vehicles. Map developers have also proposed panoramic map technology that can reflect the real environment of the destination. However, the collection of panoramic maps requires professional image equipment, which consumes a lot of manpower and material resources. At the same time, the panoramic images mainly cover the main roads, and most of the shooting time was one year ago, resulting in the problems of insufficient environmental data coverage and untimely update, which brings inconvenience to pedestrians and vehicles. [0003] At present, the methods applied to pedestrian and vehicle positioning include: GPS positioning, base sta...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to propose a street view database acquisition and precise positioning method based on terminal shooting image matching, which can make up for the problems of small coverage, untimely update and high acquisition cost of the panoramic map library of the current map APP

Images