Network Display And Stereo Measurement Of Satellite Remote Sensing Image

The essence of photogrammetry is based on the image pair,the relationship between the stereo pair model is re-established through analog,analytical or digital correlation methods,and then the stereo measurement is performed on the pair model.The three-dimensional measurement of satellite remote sensing images has always been the basis of related research in the field of photogrammetry and remote sensing.Whether it is three-dimensional reconstruction of images or three-dimensional mapping,the measurement of three-dimensional coordinates of ground points is an important prerequisite for its research.The traditional three-dimensional measurement method is to measure the three-dimensional image through an instrument,which is time-consuming and laborious,and cannot be applied at any time.With the rapid development of remote sensing technology,more and more three-dimensional surveying and mapping satellites have been successfully launched,making remote sensing image data more and more abundant,the rapid development of computer technology,breakthroughs in professional barriers,and the combination of computer networks can make satellite remote sensing more convenient.Stereo measurement of images.Because the current research on the realization of satellite remote sensing image stereo measurement in the form of network is relatively small,this paper has carried out the technical research of satellite remote sensing image online measurement,and designed an online measurement platform based on microservices and realized the satellite remote sensing image stereo measurement,It provides a new way for remote sensing image display and stereo measurement.The main tasks include:(1)By establishing a three-dimensional measurement model,comparing different image measurement methods,choosing the front intersection based on the rational function model to achieve the solution of the three-dimensional coordinates of the ground point.The model links the coordinates of the image point with the corresponding ground point coordinates in the form of a ratio polynomial,and only needs to measure the image point coordinates to calculate the three-dimensional coordinate value of the corresponding ground point.(2)An online display method of satellite remote sensing images based on HTML5 is proposed.This method builds a DeepZoom image pyramid for remote sensing images,loads image tiles through Canvas elements,and realizes fast online display of high-resolution images.The images can be zoomed and roamed by adding mouse events.Solve the problems of current image display relying on local software and slow loading speed.(3)Designed a satellite remote sensing image online measurement platform based on Node.js microservices,completed the construction of Node.js microservices based on the Seneca framework,and realized some functions.Build server-side microservices on the Node.js platform,compile image display methods,model orientation methods,and forward rendezvous algorithms into code,and deploy them on the server side in the form of microservices.According to the functions designed by the platform,these services are combined into a specific process according to specific applications such as image loading,image orientation,data query,and result output.The client is mainly based on the browser for web interactive interface development to ensure that the three-dimensional measurement of point coordinates is realized on the platform.