公开(公告)号：US09618621B2

公开(公告)日：2017-04-11

申请号：US14547542

申请日：2014-11-19

Applicant: Elbit Systems Ltd.

Inventor： Lior Barak ,  Ron Kornblit ,  Rani Ben-Yishai

IPC: G01S17/66 ,  G01S17/02

CPC classification number: G01S17/66 ,  A61B34/20 ,  A61B2034/2055 ,  G01S5/163 ,  G01S17/023 ,  G01S17/875

Abstract: An optical tracker is provided herein. The tracker may include at least two optical tracker sensors, facing at least partially each other. Each optical tracker sensor may include: a pixel array sensor configured to generate a pixel-by-pixel stream of values representing a scene; at least one visual indicator physically coupled to said pixel array sensor; and an integrated circuit (IC) physically coupled to said at least one pixel array sensor, and configured to: receive said pixel-by-pixel stream of values; and apply a binary large object (BLOB) analysis to said stream, to yield BLOB parameters indicative of the at least one visual indicator present in the scene in a single pass of the pixels representing the scene; and a computer processor configured to receive said BLOB parameters and calculate a relative position and/or orientation, or a partial data thereof, of the at least two optical tracker sensors.