Visual Tracking Using Depth Data
First Claim
1. A human-computer interaction system for visually tracking human movement comprising:
- an active depth sensor for capturing depth images of human body parts;
a processing unit coupled to the active depth sensor for receiving the depth images, the processing unit comprising;
an edge detection module;
a tracking module coupled to the edge detection module to determine a best fit of a mathematically representable contour with respect to one or more body parts to determine a position of the one or more body parts within the captured depth images; and
a body-lean determination module coupled to the tracking module to receive the determined position of the one or more body parts and configured to calculate a distance of each of the one or more body parts with respect to the active sensor and to relate the distance of each body part with respect to other body parts to determine lean data including the position of the body parts with respect to each other.
0 Assignments
0 Petitions
Accused Products
Abstract
Real-time visual tracking using depth sensing camera technology, results in illumination-invariant tracking performance. Depth sensing (time-of-flight) cameras provide real-time depth and color images of the same scene. Depth windows regulate the tracked area by controlling shutter speed. A potential field is derived from the depth image data to provide edge information of the tracked target. A mathematically representable contour can model the tracked target. Based on the depth data, determining a best fit between the contour and the edge of the tracked target provides position information for tracking. Applications using depth sensor based visual tracking include head tracking, hand tracking, body-pose estimation, robotic command determination, and other human-computer interaction systems.
91 Citations
7 Claims
-
1. A human-computer interaction system for visually tracking human movement comprising:
-
an active depth sensor for capturing depth images of human body parts; a processing unit coupled to the active depth sensor for receiving the depth images, the processing unit comprising; an edge detection module; a tracking module coupled to the edge detection module to determine a best fit of a mathematically representable contour with respect to one or more body parts to determine a position of the one or more body parts within the captured depth images; and a body-lean determination module coupled to the tracking module to receive the determined position of the one or more body parts and configured to calculate a distance of each of the one or more body parts with respect to the active sensor and to relate the distance of each body part with respect to other body parts to determine lean data including the position of the body parts with respect to each other. - View Dependent Claims (2, 3, 4)
-
-
5. A motor vehicle configured to track occupant body-lean information, the motor vehicle comprising:
-
an active depth sensor for capturing depth images of human body parts; a processing unit coupled to the active depth sensor for receiving the depth images, the processing unit comprising; an edge detection module; and a tracking module coupled to the edge detection module to determine a best fit of a mathematically representable contour with respect to one or more body parts to determine a position of the one or more body parts within the captured depth images. - View Dependent Claims (6, 7)
-
Specification