US 11,836,964 B2
Devices, systems and methods for scene image acquisition
Ilya Leizerson, Netanya (IL); and Yaron Mayerowicz, Netanya (IL)
Assigned to ELBIT SYSTEMS C4I AND CYBER LTD., Netanya (IL)
Filed by ELBIT SYSTEMS C4I AND CYBER LTD., Netanya (IL)
Filed on May 30, 2023, as Appl. No. 18/203,300.
Application 18/203,300 is a continuation of application No. PCT/IB2021/061255, filed on Dec. 2, 2021.
Claims priority of application No. 279275 (IL), filed on Dec. 6, 2020.
Prior Publication US 2023/0306710 A1, Sep. 28, 2023
Int. Cl. G06V 10/60 (2022.01); G06V 10/25 (2022.01); H04N 23/73 (2023.01); G02B 5/20 (2006.01); G02B 5/30 (2006.01)
CPC G06V 10/60 (2022.01) [G02B 5/20 (2013.01); G02B 5/30 (2013.01); G06V 10/25 (2022.01); H04N 23/73 (2023.01)] 19 Claims
OG exemplary drawing
 
1. An imaging system configured to reduce or prevent the effect of unwanted specular reflections reflected by specular surfaces located in a scene, comprising:
at least one image acquisition device for acquiring a scene image comprising a specular surface providing specular light reflections;
the at least one image acquisition device comprising at least one first image sensor and imaging optics having an optical axis for guiding light received from the scene along the optical axis onto the at least one first image sensor;
at least one polarization filter operably positioned between the at least one first image sensor and an object;
a processor and a memory which are configured to perform the following:
determining an orientation of the specular surface relative to the optical axis of the imaging optics; and
determining, based on the orientation of the surface relative to the optical axis of the imaging optics, a polarization filter orientation such that an amount of specular light reflections incident onto the at least one first image sensor is reduced or eliminated,
wherein the specular surface is also transparent, and the polarizer filter orientation is set to a desired value for imaging a scene portion that is located behind the transparent and specular surface such to allow characterization of the scene portion.