On-line ortho-rectification method and system for remote sensing image

Abstract

The invention discloses an on-line ortho-rectification method for a remote sensing image, which comprises that: a client is connected to a server of a server side through an internet; the client extracts basic information from an original remote sensing image, and sends the extracted basic information to the server; the server searches an image control point matched with the basic information in an image control point database of the server side based on the basic information of the original remote sensing image of the client, stores the image control point in a storage device of the server, and simultaneously sends a coordinate of the searched image control point to the client; the client intercepts an image film of which the size is greater than that of the image control point in the original remote sensing image based on the coordinate of the image control point of the server, and sends the intercepted original image film to the server; the image control point stored in the storagedevice of the server and the received original image film from the client are subjected to identical point matching to acquire a mapping relationship of both, and an ortho-rectification model is constructed based on the mapping relationship, and is sent to the client; and the client performs the ortho-rectification on the whole original remote sensing image based on the received ortho-rectification model. The invention also relates to an on-line ortho-rectification system for the remote sensing image.

Description

technical field [0001] The invention relates to a method for orthophoto correction of remote sensing images, and more particularly to a method for performing orthophoto correction on remote sensing images on the Internet. Background technique [0002] With the development of remote sensing technology, especially the continuous development of remote sensing sensor technology, the use of remote sensing images or data obtained by remote sensing technology is becoming more and more extensive. At present, the application scope of remote sensing data has been extended to the field of social information services, for example, it is widely used in surveying and mapping, agriculture, forestry, geology and minerals, hydrology and water resources, environmental monitoring, natural disasters, regional analysis and planning, military, land use etc. Remote sensing images with precise geocoding can provide the features and information they need for land, planning, environmental protection...

AI Technical Summary

Problems solved by technology

[0008] However, this orthorectification service solution still has insecurity and other problems: First, the image control point database is still insecure

Therefore, there are two problems that need to be solved in the orthorectification service: one is the DEM network transmission speed problem; the other is the network transmission security problem of DEM data

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