Simple digital map manufacturing method based on aerial photo

Abstract

The invention discloses a simple digital map manufacturing method based on an aerial photo. The manufacturing method comprises the following steps of: building a coordinate system for the aerial photo of a local area; identifying the coordinate of each building in the photo; building a conversion method with actual longitude and latitude; building the relation between longitude and latitude of two points with a unit distance from each other; building a constraint condition between two points which are not more than m meters from each other by using such relation, wherein all points which enable the condition to be true are not more than m meters from a central point. The method is suitable for common users, professional knowledge or professional tools are not required, and the requirement on professional is low; the manufacturing process can be realized by a computer completely, and thus the manual work load is low and the manufacturing cost is low; and all objects but not only symbolic objects such as rivers and bridges in the actual scene can be displayed in detail. The method can be widely used in service systems based on position, and also can be combined with e-government affairs, to directly serve government management and decision analysis through identifying detailed information of objects.

Description

technical field [0001] The invention belongs to the technical field of geographic information systems, and relates to a method for making digital maps with aerial photographs as objects. Background technique [0002] A digital map stores urban geographic information in a computer-recognizable format through digitization and presents it in the form of a continuous map. It is essentially an urban geographic database. [0003] Digital maps have brought great convenience to people's lives, and can provide a wealth of location-based services, such as finding various locations, various places, and finding travel routes. The combination of digital map and e-commerce system can dynamically display the location of chain stores, the distribution of delivery destinations, calculate the shortest path, optimize the delivery plan, and realize optimized management, etc. Combined with GPS, it can monitor moving objects and vehicle operation in real time, and realize remote management. Com...

AI Technical Summary

Problems solved by technology

[0005] In addition to the high requirements on professionalism and production cost, many works of digital map production need to be done manually, so the workload is very huge, which causes the current users to use In addition to the objects that must be marked such as rivers and bridges, digital maps rarely involve the identification of atypical buildings such as residential buildings, so that digital maps can accommodate very little information

The existing digital map production technology has defects such as strong professionalism, high production cost, and heavy manual workload.