True radiographic image production method, device and equipment and storage medium

Abstract

The invention relates to a true radiographic image manufacturing method, device and equipment and a readable storage medium. The method comprises the steps of acquiring homonymous points of first reference pixel points in a remote sensing image through dense matching; extracting homonymous point pairs from the homonymous points to form a triangulated network small surface element, and performing initial correction on the first reference pixel point according to small surface element differential correction to obtain a second reference pixel point; summarizing the homonymous points of the reference pixel points to obtain point clouds of the homonymous points corresponding to the reference pixel points; dividing the point cloud rule into squares according to a preset sampling interval, and calculating medians of homonymous points in the squares through a collinear equation to serve as elevation values of the squares; based on the elevation value and the information of the second reference pixel point, establishing a digital surface model and generating an orthoimage; and based on the second reference pixel point, performing image correction on the orthoimage according to digital differential correction to obtain a true image. The method has the effect of correcting and keeping the vertical angle of the earth surface landscape.

Description

technical field [0001] The present application relates to the field of aerial image processing technology, and in particular to a method, device, equipment and storage medium for producing true orthophoto images. Background technique [0002] Digital Orthophoto (DOM) is an image map with map geometric accuracy, mathematical accuracy and image features. It can directly reflect the current status of urban landform information. It has high precision, intuitive and real, rich information, low acquisition cost and fast acquisition speed. , The advantages of wide application, from which natural resources and social and economic development and construction can be obtained, have become important geographic information in urban construction, planning management, land resource development, utilization and protection. [0003] Digital orthophotos generally use DEM (Digital Elevation Model) for differential correction, which only eliminates image distortion caused by perspective imagin...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of occlusion and cover phenomenon of tall buildings in digital orthophotos that deviate from their correct positions, this application provides a real orthophoto production method

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