Research And Application Of Augmented Reality Technology In Architectural Expression

Architectural expression usually refers to the expression of architectural design results through a variety of media tools,which is not only a reflection of architectural content but also an interactive means of the architectural design process.This thesis display information related to architectural expression in real scenes by augmented reality technology,so as to provide reference and guidance for professional architects in construction design.the main work of this thesis is as follows:(1)Aiming at the problem that the enhanced display of the relevant information of architectural expression is unsatisfactory which is leaded by the ordinary photographic image’s small view,the panoramic stitching module of architectural scene is studied and implemented.Firstly,the SIFT optimization algorithm combined with the unit information projection entropy was used to extract the features of the architectural scene images,and then the matching correction was carried out by the Randomized RANSAC algorithm with the Sequential Probability Ratios Test,so as to obtain the wide-field and high-resolution panoramic images of the scene.(2)In order to solve the problem that ordinary photographic images taken by users and augmented reality logo panorama images may have big differences in image brightness,size and other aspects and cannot be well recognized,rough and precise matching of scenes was completed through the SURF hash algorithm and the improved ORB algorithm based on quadtree.The matching and recognition of user captured images and panoramic images of the architectural scene was realized,and the returned panoramic images were used as the identification images for subsequent enhanced display of related information of architectural expression.(3)To solve the problem that traditional modeling software cannot fully express architectural information,this thesis adopts Revit software,a BIM standard modeling software,to design information related to architectural expression(including 3D architectural expression model,architectural elevation,section,internal plan,etc.),enhances the display of 3D model and adds interactive operation through Unity3 D engine,and shows 2d drawing through its built-in GUI command.(4)Based on augmented reality,the architecture expression information display and interaction system is designed and realized,and the effects of the system are displayed and analyzed.Taking the high-rise apartment scene of Xi’an University of Architectural Science and Technology as an example,the panorama stitching and scene recognition module were completed in this scene.The information related to architectural expression was constructed in Revit modeling software,and the interaction of 3D model and the roaming operation inside the house were realized in the Unity3 D engine.This thesis applied Unity3 D and augmented reality technology to architectural expression,completed the display and interaction function of information related to architectural expression,which has certain significance of guidance and reference for the field of architectural design.