Verfahren zum Erzeugen von Formbeschreibern für Zwei- oder Dreidimensionale Geometrische Formen

Details

Veröffentlichungs-Nr.

EP3637319

Aktenzeichen

EP18199841

Anmeldetag

11. Oktober 2018

Veröffentlichung

25. Mai 2022

Erteilung

25. Mai 2022

Rechtsraum

EP

IPC

G06K9/00G06K9/48G06K9/52

Abstract

In the invention for generating a set of shape descriptors for a set of two or three dimensional geometric shapes in order to arrive at an unified efficient low-dimensional representation of the complete set of shapes to enable memory and disk efficient storage, indexing, referencing, and making the complete set available for further processing, at first a set of N feature locations having a distance from the shapes is read. Further, a set of M wave numbers is read and a parameter controlling degree of locality of the features. Then, for each shapesin the set of shapes {S_s,s= 1, ...,N_s} and for each of the N feature locations and M wave numbers a feature descriptor is calculated according tofsmm=‖R→n‖aγe−ikmRnC∫shape sd3s→eikm‖s→−R→n‖2‖s→−R→n‖αγwhere the integral is summing all contributions from each point of shape s. The calculated feature descriptors are then assigned to elements of an M.N dimensional vector as the shape descriptor for shape sF→s=fsn=1,m=1,fsn=1,m=2,...,fsn=N,m=MTand the complete set of shape descriptors {F_s,s= 1, ... ,N_s} of the set of shapes is output.

Anmelder

Firma

Honda Research Institute Europe GmbH

Land

🇩🇪 Deutschland

Fachgebiete