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公开(公告)号：US20230141795A1
公开(公告)日：2023-05-11
申请号：US17920655
申请日：2021-04-16
申请人： AIRBUS DS GEO SA
发明人： Philippe NONIN
CPC分类号： G01C11/06 , G01S13/867 , G01S13/9021 , G06T7/344 , G06T7/337 , G06T2207/10012 , G06T2207/10044 , G06T2207/20076
摘要： A method (100) for referencing an optical image (19) including: obtaining (110, 120) a stereoscopic image pair (19, 23) of the optical image (19) and a SAR image (35), the surface areas covered by the images (19, 23, 35) on the ground having an overlapping area (39); selecting (130) an area of interest (42) in the overlapping area (39); from the area of interest (42): obtaining (140) a 3D model (40); calculating (150) a simulated radar image (44); estimating (160) an offset (di, dj) between the simulated image (44) and the radar image (35); selecting (170) a reference point (46); projecting (180) and shifting (di, dj) the reference point (46) in the radar image (35) to correct the radar connection point (46′″); determining (175) a pair of connection points (46′, 46″) in the image pair; and referencing the optical image (19) based on the connection points (46′, 46″, 46′″).
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公开(公告)号：US20230152443A1
公开(公告)日：2023-05-18
申请号：US17920621
申请日：2021-04-20
申请人： AIRBUS DS GEO SA
发明人： Philippe NONIN
IPC分类号： G01S13/90
CPC分类号： G01S13/9027 , G01S13/9023 , G01S2013/468
摘要： A method (100) for referencing a digital elevation model (10), involving a step of obtaining (110) two SAR images (12, 14) having a common area (15) that their area of overlap (16, 17) shares with the digital model (10); the method (100) involving, for the SAR images (12, 14), steps of: selecting (120) an AOI (18) in the common area (15); calculating (130) a simulated image (22) in the AOI (18); estimating (140) an offset (di, dj) between the simulated image (22) and the SAR image (12); the method (100) involving steps of selecting a reference point (26) in the AOI (18); projecting (160) the reference point (26) into the SAR images (12, 14) to obtain one connection point per SAR image (12, 14); correcting (170) the connection points by the offsets (di, dj); calculating (180) the readjusted reference point (26); referencing (190) the digital model (10).
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3.发明申请公开(公告)号：US20230089827A1
公开(公告)日：2023-03-23
申请号：US17933653
申请日：2022-09-20
申请人： AIRBUS DS GEO SA
摘要： Method for selecting stereo pairs of satellite or aerial images to generate elevation data for an area of interest, the method being computer-implemented and including a phase of selecting eligible stereo pairs from an initial set of images representing the area of interest, followed by a phase of ranking the selected stereo pairs according to their quality. The method further includes a phase of defining N image clusters, where N is an integer greater than or equal to 2, each grouping images from the initial set according to a similarity criterion, and a phase of selecting the best stereo pairs per cluster on the basis of the ranking established during the ranking phase and on the fact that a pair belongs to a cluster if the two images of the pair belong to the cluster.
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