US 12,293,595 B2
Extraction of extraction information from scanning information of a surface for use with a database
Jan Behling, Dortmund (DE); Mathias Rotgeri, Dortmund (DE); Jan Sören Emmerich, Dortmund (DE); Dirk Höning, Dortmund (DE); Patrick Klokowski, Dortmund (DE); and Christian Hammermeister, Dortmund (DE)
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on May 3, 2023, as Appl. No. 18/311,444.
Application 18/311,444 is a continuation of application No. PCT/EP2021/080787, filed on Nov. 5, 2021.
Claims priority of application No. 10 2020 214 002.2 (DE), filed on Nov. 8, 2020.
Prior Publication US 2023/0274564 A1, Aug. 31, 2023
Int. Cl. G06V 20/80 (2022.01); G05D 1/00 (2006.01); G06V 10/771 (2022.01); G06V 20/56 (2022.01)
CPC G06V 20/80 (2022.01) [G05D 1/0246 (2013.01); G06V 10/771 (2022.01); G06V 20/56 (2022.01)] 23 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a processing unit configured to
acquire scanning information, provided by a detection unit, from a scan of a surface, the scanning information comprising information on an inherent feature of the surface, wherein the inherent feature of the surface comprises a plurality of sub-features; and
extract extraction information for the inherent feature from the scanning information, wherein the processing unit is configured to extract a set of sub-extraction information for each sub-feature of the plurality of sub-features and to determine a descriptor as part of the set of sub-extraction information for each sub-feature; and
determine a value from each set of sub-extraction information, the value being associated to an information content of the sub-feature associated with the set of sub-extraction information; and
compare each value to a threshold value; and
select those sets of sub-extraction information for whose associated sub-feature the determined value at least reaches the threshold value; and
perform matching with a database based on determined descriptors of the selected sets of sub-extraction information, wherein the database stores extraction information for a plurality of inherent features of the surface whose positions are known, and wherein the database stored descriptors for the plurality of sub-features; and
determine the position of the detection unit based on the matching.