US 10,872,461 B2 · Method and device for obtaining 3D images

Abstract

A method and device are provided for obtaining a 3D image. The method includes sequentially projecting a plurality of beams to an object, each of the plurality of projected beams corresponding to a respective one of a plurality of sectors included in a pattern; detecting a plurality of beams reflected off of the object corresponding to the plurality of projected beams; identifying time-of-flight (ToF) of each of the plurality of projected beams based on the plurality of detected beams; identifying a distortion of the pattern, which is caused by the object, based on the plurality of detected beams; and generating a depth map for the object based on the distortion of the pattern and the ToF of each of the plurality of projected beams, wherein the plurality of detected beams are commonly used to identify the ToF and the distortion of the pattern.

Claims18

Dependent claims

A method for obtaining a three-dimensional (3D) image by a device including a beam projector and a beam detector, the method comprising:

sequentially projecting, from the beam projector, a plurality of beams to an object, wherein each of the plurality of beams is modulated based on a corresponding one of a plurality of sectors included in a pattern, and is projected;
detecting, by the beam detector, a plurality of beams reflected off of the object corresponding to the plurality of projected beams;
identifying time-of-flight (ToF) of each of the plurality of projected beams based on the plurality of detected beams;
identifying a distortion of the pattern, which is caused by the object, based on the plurality of detected beams;
and
generating a depth map for the object based on the distortion of the pattern and the To of each of the plurality of projected beams,
wherein the plurality of detected beams are commonly used to identify the To and the distortion of the pattern.

4 more elements

A device for obtaining a 3D image, the device comprising:

a beam projector;
a beam detector;
and
a controller configured to:
control the beam projector sequentially project a plurality of beams to an object, wherein each of the plurality of beams is modulated based on a corresponding one of a plurality of sectors included in a pattern and is projected,
detect, by the beam detector, a plurality of beams reflected off of the object corresponding to the plurality of projected beams,
identify time-of-flight (ToF) of each of the plurality of projected beams based on the plurality of detected beams,
identify a distortion of the pattern, which is caused by the object, based on the plurality of detected beams, and
generate a depth map for the object based on the distortion of the pattern and the ToF of each of the plurality of projected beams,
wherein the plurality of detected beams are commonly used to identify the ToF and the distortion of the pattern.

7 more elements

Dependencies are inferred from the claim text.

Method and device for obtaining 3D images

Life of this patent

Method and device for obtaining 3D images

Life of this patent

Abstract

Claims18