Calibrating depth cameras using natural objects with expected shapes
First Claim
Patent Images
1. An apparatus for calibrating depth cameras, comprising:
- an image receiver to receive an image from a depth camera;
an object detector to detect a natural object with an expected shape in the image; and
a parameter adjuster to adjust a parameter of the depth camera to reduce a detected difference between the expected shape and a measured characteristic of the natural object.
1 Assignment
0 Petitions
Accused Products
Abstract
An example apparatus for calibrating depth cameras includes an image receiver to receive an image from a depth camera. The apparatus also includes an object detector to detect a natural object with an expected shape in the image. The apparatus further includes a parameter adjuster to adjust a parameter of the depth camera to reduce a detected difference between the expected shape and a measured characteristic of the natural object.
10 Citations
25 Claims
-
1. An apparatus for calibrating depth cameras, comprising:
-
an image receiver to receive an image from a depth camera; an object detector to detect a natural object with an expected shape in the image; and a parameter adjuster to adjust a parameter of the depth camera to reduce a detected difference between the expected shape and a measured characteristic of the natural object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for calibrating depth cameras, comprising:
-
receiving, via a processor, an image from a depth camera; detecting, via the processor, a natural object with an expected shape in the image; and adjusting, via the processor, a parameter to reduce a difference between the expected shape and a measured characteristic of the natural object. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. At least one non-transitory computer readable medium for calibrating depth cameras having instructions stored therein that, in response to being executed on a computing device, cause the computing device to:
-
receive an image from a depth camera; detect a natural object with an expected shape in the image; estimate a pose of the natural object based on the expected shape; generate a disparity-based depth gradient and a homography-based depth gradient; detect a difference between the disparity-based depth gradient and the homography-based depth gradient exceeds a predetermined threshold; and adjust a parameter to reduce the difference between the disparity-based depth gradient and the homography-based depth gradient below the predetermined threshold. - View Dependent Claims (22, 23, 24, 25)
-
Specification