Active depth extraction using image streams

Arun K. Dalmia; Mohan M. Trivedi

doi:10.1117/12.179046

22 June 1994 Active depth extraction using image streams

Arun K. Dalmia, Mohan M. Trivedi

Proceedings Volume 2233, Sensor Fusion and Aerospace Applications II; (1994) https://doi.org/10.1117/12.179046
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The computation of 3D structure from motion using a monocular sequence of images in the paradigm of active vision is presented in this paper. Robotic tasks such as navigation, manipulation, and object recognition all require 3D description of scene. The 3D description for these tasks varies in resolution, accuracy, robustness, range, and time. For a robotic system capable of performing a wide range of applications, it must have the ability to actively control the imaging parameters so that a 3D description sufficient enough for that task is generated. In the approach presented here, the 3D structure is determined in two steps. In the first step, based on the analysis of the spatial and the temporal gradients of an image stream, a characterization of 3D information in terms of camera displacements which result in a fixed disparity, is obtained. In the second step, extrapolated disparity values between the first and last frame of the image stream, are refined using normalized cross-correlation. The length of the image stream, interframe camera displacement, and the disparity value are actively controlled to obtain the 3D structure of desired quality. This approach has been implemented on a pipeline based computing environment to provide a real-time performance. Extensive experiments have been conducted to verify the performance and capabilities of this approach.

Citation Download Citation

Arun K. Dalmia and Mohan M. Trivedi "Active depth extraction using image streams", Proc. SPIE 2233, Sensor Fusion and Aerospace Applications II, (22 June 1994); https://doi.org/10.1117/12.179046

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available