An outdoor mobile augmented reality method based on the combination of geographic grid and image recognition

Abstract

The invention belongs to the field of augmented reality, and in particular relates to an outdoor mobile augmented reality method combining geographic grid and image recognition, which includes the following steps: outdoor scene area collection, spatial data processing, geographic grid unit division, target data collection, Image feature point detection and extraction, spatial quadtree index, sample database generation, terminal data collection, image feature generation, data parsing and matching, scene information three-dimensional registration and scene augmented reality display, the present invention can better overcome the translation in the process of image recognition , Rotation, scale scaling, brightness changes and other factors, while adding color information to the descriptor, it solves the problem that areas with similar gray scale changes are prone to mis-matching, combined with geographic information technology, it is possible to distinguish similar textures according to location The image features of the image, using the division of the geographical grid to establish a quadtree index for the sample point information, can quickly and accurately match in the massive feature database.

Description

technical field [0001] The invention relates to the field of augmented reality, in particular to an outdoor mobile augmented reality method combining geographic grids and image recognition. Background technique [0002] Augmented reality is a technology that calculates the position and angle of the camera image in real time and adds corresponding virtual information. It integrates image recognition, fusion display, multi-sensor, computer and other disciplines. It builds a bridge between the virtual scene and reality. The bridge, which puts the virtual world on the real world and displays it on the screen for interaction, has been successfully applied to fields such as medical surgery, industrial design, municipal planning, military simulation, education and training, and cultural entertainment. At present, augmented reality has high requirements for input and output devices and computing devices. In recent years, with the rapid development of Internet technology and smart ph...

AI Technical Summary

Problems solved by technology

[0008] 2. Outdoor scenes have problems such as wide space range and large randomness in the recognition process. Coupled with the limited computing and storage capabilities of mobile phones, it is difficult to perform large-scale computing and the efficiency is low.

Images