Real-time searching and combining technology of mobile end three-dimensional city model based on Internet

Abstract

The invention relates to a real-time searching and combining technology of a mobile end three-dimensional city model based on Internet. The technology realizes a three-dimensional real city scene of shooting and obtaining an image of a mobile terminal including an intelligent cell phone and the like, namely a front face image of an interested city building can be shot by the mobile terminal; a size unchanged characteristic conversion descriptor is extracted and a non-linear encoding matrix is used for encoding and compressing; a server is connected through a wireless Internet and the three-dimensional city model is automatically searched from the Internet; the three-dimensional model which does not meet the requirements is automatically filtered and an optimal model is intelligently calculated; if the related three-dimensional model cannot be searched, the related image is searched; based on an image reconstruction three-dimensional model, the three-dimensional model and attribute information are automatically transferred to the mobile terminal to be overlapped with a two-dimensional map; and therefore, a user can browse and inquire region space information of the user in real time. The real-time searching and combining technology disclosed by the invention has a wide application prospect on the aspects of city navigation, space position service and the like.

Description

1. Technical field [0001] The invention relates to an Internet-based mobile terminal three-dimensional city model real-time search and synthesis technology, which belongs to the field of spatial information technology. 2. Background technology [0002] During the "Eleventh Five-Year Plan" period, my country's navigation and location service applications developed extremely fast. Internet map services began to develop from wired Internet to mobile terminals. Domestic and foreign map products such as Google Maps, Nokia OVI, Tencent QQ Maps, and 51 Maps have all been successful. Transplanted to iOS, Android, Sybian, Windows Mobile and other mobile terminal operating system platforms; entering the "Twelfth Five-Year Plan", the location-based service (LBS) industry facing the public is experiencing map tracking and navigation, life information search, location social The evolution of the network at three levels. "Interactive intelligence, group crowdsourcing, real-time feedback, a...

AI Technical Summary

Problems solved by technology

At present, search engine technology is still limited to text retrieval. The retrieval of images, videos, 3D models, etc. is usually through retrieval of relevant text information, so the accuracy of searching such data and models is very low; on the other hand, for large For large-scale graph data, how to index, update and search is also a key technical problem to be solved urgently

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