Research On The Key Issues Of Panoramic Imaging And Its Application In The Smart Tourism

To meet the development of tourism informatization,digital tourism,which emphasizes informatization and quantification,is extending to smart tourism because of its personalized service,smartness,and visualization.The researches of smart tourism disclosed that mobile intelligent tourism service system is an important technological platform to bring smartness into tourism.On the other hand,since full view panorama is able to simulate tele-presence or virtual reality experience,smart tourism system,which employs panoramas to deliver the visualization,is in favor of the enhancement of destination marketing,tourism value added,and tourist intuitive feelings.However,corresponding researches show that the application of the panoramic image in tourism is still insufficient.Close shot and full view panoramas,which are in different scales,are both desired for visualization in tourism service system because close shot panorama is in favor of detailed landscape presentation and full view panorama is beneficial to deliver context surroundings of a certain landscape.Therefore,multi-scale technology is involved in the design of the tourism service system.In addition,images registration is one of key step for panoramic imaging.The enhancement orientated matching speed and quality bears fruit for the improvement of panoramic imaging.The multi-scale technology and optimization method of images registration deliver its importance to the mobile intelligent tourism service system.This thesis aims to realize the smart tourism route.We research some key technologies of panoramic imaging.After embedding the panoramic images in tourist route,we design the Smart Tourism System of Huangshan(STSoHS),and explore the presentation of tourism perception via panoramic technology.First,in terms of the application of the mobile panoramic technology,the thesis studies the multi-scale visualization approach of the smart tourism.In detail,we extended one camera calibration results in one scale to multi-scales:(1)The change ratio of intrinsic parameters is equal to the change ratio of the resolution.(2)Extrinsic parameters are unchanged no matter an image being down sampled or up sampled.(3)The distortion parameters also hold unchanged.Experiments showed that a group of calibration parameters obtained from down sampled pattern images may be used for original image's distortion correction with the help of the extension results,and vice versa.Based on the extension,panoramas in different scales were employed for visualization expression in tourism service system,e.g.,close shot landscape is designed to be a pop-up image as a click response of full view panorama.In this way,close shot and full view panoramas are involved in for landscape expression,which brings more luxuriant visualization content and makes tourism service system be smarter.The tourism service system designed in this way not only brings more intuition feeling to tourists,but also simplifies the implementation.Second,in terms of the core technology of panoramic imaging,the thesis presents an orthogonal design to optimize SIFT method after study the procedures of SIFT method.In the procedure,(1)We designed a mixed orthogonal table MA(64,23420,2).(2)An algorithm was designed to build corresponding head table based on the linear dependence of Galois field.(3)After using three topical images databases,including the high-definition earth observation satellite "Gaofen-1",CIT-Pasadena-Entrances-2000,and Caltech Cars 1999(Rear 2),and a synthetic database Miscellaneous for test,the optimization results in two groups of parameters to meet the requirement of real-time applications and cost-performance applications,respectively.Compared with Lowe and Vedaldi methods,the experiments demonstrate that speed-oriented optimization is able to result in smaller time,and cost-performance-oriented optimization is able to result in more matched points.Compared with PCA-SIFT,speed-oriented optimization is able to result in smaller time in most experimental images,and cost-performance-oriented optimization is able to result in more matched points.SURF is faster than SIFT,however,SURF may be fall in failure when face to registration tasks.This study makes the stitching quality and connection between two images presents in higher and in firmer quality.And it improves the presentation of the full view panorama.The statistical results suggested that SIFT parameters may be designed in different manners so as to meet the requirements of different applications.Finally,this thesis researches the visualization application of the panorama in the mobile intelligent service system.Investigation respondents showed that(1)Tourism planning is a necessary preliminary preparing before carrying out tourism activities.(2)The reliance on smart cell phone is getting stronger.The design of tourism service system should orient to mobile terminals.The geographical space of Mt.Huangshan is appropriate for 2-D and 3-D studies.The landscape of Mt.Huangshan is complicated.The same attraction in different seasons presents different landscapes.The same attraction in the same season under different wather conditions also presents different landscapes.As the World Heritage List,Mt.Huangshan attractions are blocking protected in turn,this makes it suitable for virtual reality research.In case of Mt.Huangshan,combing the acquired GPS data,we designed and implemented a smart tourism service system of Mt.Huangshan via four modules,including: data processing,map producing,location positioning,and panorama presentation.We explored the expanding expression of the panorama for the tourism perception in the service devices.The thesis researches the geospatial IntelliSense,travel planning,tourism virtual travel through space-time and their implementations.