System and method for realizing tour guide based on mobile phone hand-drawn map photos

Abstract

The invention relates to a tour guide system and a tour guide method for realizing coarse-grained positioning on the basis of mobile phone GPS positioning and a hand-drawn map photo for keeping a basic geographic relationship. According to the basic principle, it is assumed that a photo map is composed of grids of a Mercator projection system map on small scales of scenic spots, parks, communitiesand the like, after a grid map north coordinate system is established through reference points, the mapping relation between photo pixel coordinates and geodetic coordinates is established, and thuspositioning of GPS signals on the photo map is achieved. The method comprises the following basic steps: 1, obtaining a hand-drawn map of a current region through front photographing of a mobile phoneor network searching; 2, dynamically dividing grids through reference points; 3, establishing a due north photo navigation coordinate system on a grid picture; 4, finally realizing the mapping relation between the photo pixel coordinates and the GPS geodetic coordinates through the proportional relation between the photo navigation coordinate system and the Mercator coordinate system; and 5, fitting the GPS of the mobile phone through back-end support or a user-defined route to realize coarse-grained tour guide, and correcting the grid based on the deviation so as to obtain good tour guide experience.

Description

Technical field: [0001] The invention relates to the technical field of hand-drawn map positioning, in particular to a tour guide system and method combined with mobile phone GPS positioning on the hand-drawn map of the current area obtained based on mobile phone frontal photography or network search. Background technique: [0002] Electronic map navigation technology is widely used in daily life, but electronic maps are mainly suitable for the navigation needs of urban main roads, but there is basically no guide for internal roads such as large scenic spots, parks, and residential areas. Generally, these large-scale scenic spots, parks, and communities will set up hand-drawn guide maps at the entrance and main points. However, for most people, it is necessary to link the guide map with their own location and combine the guide map It is very difficult to complete the guided tour in the area. Although some scenic spots will provide customized electronic navigation in the are...

AI Technical Summary

Problems solved by technology

The existing technology is mainly based on training or standard pairing to realize map positioning. It is valuable for making electronic maps for professional scenic spots, but it is not enough for general users to enter scenic spots, parks, and residential areas.

[0005] When an ordinary user enters an unknown area and the electronic map cannot provide help, the GPS and camera functions of the mobile phone are still normal, and generally at the entrance or key points, the management personnel of the scenic spot will set up a guide map, and now people generally take photos for storage And determine the current location, but after walking for a while, you will still get lost until the next point appears or you get help from others

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