The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2020
Filed:
Nov. 14, 2017
Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno, 's-Gravenhage, NL;
Klamer Schutte, 's-Gravenhage, NL;
Sebastianus Petrus Van Den Broek, 's-Gravenhage, NL;
Raoul Johan-Martijn Ten Hove, 's-Gravenhage, NL;
Adam Wilhelmus Maria Van Eekeren, 's-Gravenhage, NL;
Frank Bart Ter Haar, 's-Gravenhage, NL;
Gerrit Van Antwerpen, 's-Gravenhage, NL;
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage, NL;
Abstract
Identification of ships from camera images is performed by computing sets of reference silhouette images for respective reference ships for use to match the reference silhouette images with a camera image of an unidentified ship. A computer forms the set of the reference silhouette images for a reference ship is performed automatically by a processing system on the basis of at least one silhouette image of the respective reference ship. The computer generates a three dimensional model of the reference ship that represents distances of an outer surface of the reference ship to a plane on which the captured silhouette image has been mapped, the three dimensional model representing the distances as a function of position in said plane. A deck line of the reference ship is detected based on the camera image. The represented distances to the outer surface are set and/or adapted dependent on position in said plane relative to the detected deck line. The represented distances for positions in said plane below the detected deck line are set and/or adapted convergently toward a bow of the ship in the silhouette image. The reference silhouette images are generated by computing perspective projections of the three dimensional model onto image planes for respective viewpoints in a three dimensional array of viewpoints in ranges of distance relative to the reference ship, horizontal direction from the reference ship to the viewpoint and height relative to the reference ship and in the three dimensional model.