Research On Key Technology Of Building Oblique Aerial Virtual Imaging System

This paper presents the basic principle and research status of oblique aerialphotogrammetry technology at first. By analyzing the basic functions and main featuresof the existing oblique image processing software (Real Image System), summarizeseveral key technologies the software depends on. Then, it specially researchs on thedata organization and management,3D measurement based on a single image,multi-view images associated technology, and brings forward the correspondingsolutions. Finally, in order to verify the feasibility of those methods, correspondingfunctions are developed based on the experimental platform, and lots of experiments aredone, measurement accuracy and image search results are analyzed. The main contentsare as follows:(1) Elaborate the basic principles and application advantages of the oblique aerialphotogrammetry technology, and several key technologies used in the data processingare brought forward.(2) The main features and uses of the basic data which the software uses areanalyzed. Based on this, bring forward the data organization scheme, and establish aspecial image library.(3) It describes the measurement methods in the field of photogrammetry andcomputer vision. Combined with the characteristics of oblique images, single imagemeasurement in DEM environment is proposed. It describes the basic principles anddetailed flow of coordinates and height measurement, then analyzes the accuracy impactfactors.(4) Based on the above technologies, research on the image optimization andvisualization technology, and realize multi-view images are displayed synchronizely.(5) In order to verify the feasibility of these methods, simulation experiments aredone by using SWDC4images of PingDingShan, and it proves that the experimentalresults can meet users’ demand.