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Method for determining the coordinates of digital images of photogrammetric reference signs: development and evaluation of accuracy
https://doi.org/10.32446/0368-1025it.2021-11-19-23
Abstract
The method of automated measurement of coordinates of digital images of centrally symmetric artificial objects proposed by the authors is considered in order to analyze the possibility of its application in software complexes for processing images obtained by a remote sensing system. Two correlation algorithms are proposed for the implementation of the method that allows determining the coordinates of the centers of digital images of artificial objects with subpixel accuracy. The influence of the discrete structure of raster images on the measurement accuracy is investigated. Calculations of errors in measuring the coordinates of digital images are given. An experiment with the use of the author's software on automated determination of the coordinates of the centers of images of radial test-objects for measuring optical resolution obtained from real surveys is described, confirming the effectiveness of the proposed method.
Keywords
emote sensing,
photogrammetry,
digital image,
measurement error,
subpixel accuracy,
correlation function.
Supporting agencies: the work was carried out within the framework of the state order 0708-220-0001 of the Ministry of Education and Science of Russia
About the Authors
I. G. Zhurkin
Moscow State University of Geodesy and Cartography
Russian Federation
Russian Federation
Igor G.Zhurkin
Moscow
G. G. Sychev
Moscow State University of Geodesy and Cartography
Russian Federation
Russian Federation
Grigory G.Sychev
Moscow
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Review
For citations:
Zhurkin I.G., Sychev G.G. Method for determining the coordinates of digital images of photogrammetric reference signs: development and evaluation of accuracy. Izmeritel`naya Tekhnika. 2021;(11):19-23. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-11-19-23
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