US 12,250,442 B2
Metalens 3D-from-polarization camera
Matthew Brand, Newton, MA (US); and Zeyu Kuang, New Haven, CT (US)
Assigned to Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US)
Filed by Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US)
Filed on Mar. 28, 2023, as Appl. No. 18/191,052.
Prior Publication US 2024/0334033 A1, Oct. 3, 2024
Int. Cl. H04N 23/55 (2023.01); G06T 7/521 (2017.01); G06T 7/55 (2017.01); H04N 23/95 (2023.01)
CPC H04N 23/55 (2023.01) [G06T 7/521 (2017.01); G06T 7/55 (2017.01); H04N 23/95 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A camera comprising:
an optical module configured to spatially separate photons reflected from an object in a scene to form at least two focused and distinctly polarized images on a sensor, wherein the sensor is configured to receive the at least two polarized images on pixels of the sensor and generate intensity values of the pixels; and
a computing module including a processor and a memory having instructions stored thereon that cause the processor to:
compute depth values at points of a surface of the object based on a ratio of the intensity values of the pixels with respect to the at least two polarized images; and
reconstruct the surface of the object from the computed depth values.