METHOD AND DEVICE FOR FILLING REGIONS OF TERRAIN ELEVATION MODEL DATA

A method and device for filling invalid regions of terrain elevation model data are provided by the present disclosure. The filling method includes obtaining an isolated invalid grid in first terrain elevation model data, the invalid grid being a grid without a valid elevation value; interpolating a...

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Bibliographic Details
Main Authors LEI, Dongxu, WANG, Qiankun, WANG, Yun
Format Patent
LanguageEnglish
French
German
Published 29.11.2023
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:A method and device for filling invalid regions of terrain elevation model data are provided by the present disclosure. The filling method includes obtaining an isolated invalid grid in first terrain elevation model data, the invalid grid being a grid without a valid elevation value; interpolating an elevation value of the isolated invalid grid by using elevation values of valid grids around the isolated invalid grid, to obtain data-interpolated first terrain elevation model data; obtaining invalid patches in the data-interpolated first terrain elevation model data, each of the invalid patches being a region consisting of at least two adjacent invalid grids; and interpolating elevation values of the invalid grids in the invalid patches by using a further terrain elevation model data other than the first terrain elevation model data, to fill the invalid regions of the first terrain elevation model data.
Bibliography:Application Number: EP20180746828