Title

A Virtual 3D Blackboard: 3D Finger Tracking Using A Single Camera

Abstract

We present a method for tracking the 3D position of a finger, using a single camera placed several meters away from the user. After skin detection, we use motion to identify the gesticulating arm. The finger point is found by analyzing the arm's outline. To derive a 3D trajectory, we first track 2D positions of the user's elbow and shoulder. Given that a human's upper arm and lower arm have consistent length, we observe that the possible locations of a finger and elbow form two spheres with constant radii. From the previously tracked body points, we can reconstruct these spheres, computing the 3D position of the elbow and finger. These steps are fully automated and do not require human intervention. The system presented can be used as a visualization tool, or as a user input interface, in cases when the user would rather not be constrained by the camera system. © 2000 IEEE.

Publication Date

1-1-2000

Publication Title

Proceedings - 4th IEEE International Conference on Automatic Face and Gesture Recognition, FG 2000

Number of Pages

536-543

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/AFGR.2000.840686

Socpus ID

33750937502 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33750937502

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