Research And Application Of Augmented Reality Technology In Tourism System

With the continuous improvement of people ’ s living standards,tourism products and service models are also upgrading.Augmented reality technology provides more interactive modes by integrating computer generated virtual information into real scenes,so that tourists have a stronger sense of immersion in the real world.This paper conducts in-depth research on the application of augmented reality technology in tourism system and how to improve the performance of augmented reality system and user service experience.The main research contents of this paper are as follows :Natural feature recognition algorithm is studied.In view of the insufficient number of feature points extracted by the traditional ORB algorithm and the problem of scale invariance and rotation invariance,this paper proposes an improved ORB algorithm.SURF algorithm is used to detect feature points,and Gaussian pyramid is constructed to make them scale invariant.Harris algorithm is used to select the optimal feature points,and gray centroid method is used to make them rotation invariant.Finally,RANSAC algorithm is used to purify the matching point pairs.Experiments show that the algorithm has the advantages of fast speed,high recognition rate and good robustness.Research on 3D registration algorithm.In view of the low registration accuracy of the homography matrix calculated by the traditional method,this paper obtains a more accurate homography matrix by improving the calculation method of homography matrix.Experiments show that the improved homography matrix registration accuracy is higher,the three-dimensional registration results are more accurate,and the enhanced effect is more realistic.Finally,an augmented reality tourism system based on natural feature extraction is designed and implemented.Open CV and OpenGL open source image processing library,combined with Autodesk Maya,using C + + language for system development.Three kinds of tourism video playback modes are designed,including screen 2D playback,image 2D playback and three-dimensional playback.The functions of model display and model interactive display are designed.The test shows that the system has good real-time performance and robustness.