Measurement errors in polarization-based 3D vision systems

Bojian Liang; Andrew M. Wallace; Emanuele Trucco

doi:10.1117/12.263323

20 January 1997 Measurement errors in polarization-based 3D vision systems

Bojian Liang, Andrew M. Wallace, Emanuele Trucco

Proceedings Volume 2909, Three-Dimensional Imaging and Laser-Based Systems for Metrology and Inspection II; (1997) https://doi.org/10.1117/12.263323
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

Multiple reflections can degrade significantly depth data acquired by laser rangefinders. However, analysis of the polarization state of the reflected light can provide additional clues to distinguish the first and subsequent reflections. Such estimates depend critically on the ratio between absolute differences of intensity measured by a camera with different settings of some polarizing optical components. Errors introduced by weak signals, the nonlinear response of the sensors, noise and quantization in the video channel can be very significant. When a laser is used as the illumination source, fluctuation of the source intensity can introduce additional errors if comparisons are made between images acquired at different times. We presents a discussion of the type and effects of these errors, guidelines on systems settings and an upper-bound analysis of the error on the estimates of the orientation of the completely polarized component of light, a fundamental quantity used in several polarization vision systems for diverse applications.

Citation Download Citation

Bojian Liang, Andrew M. Wallace, and Emanuele Trucco "Measurement errors in polarization-based 3D vision systems", Proc. SPIE 2909, Three-Dimensional Imaging and Laser-Based Systems for Metrology and Inspection II, (20 January 1997); https://doi.org/10.1117/12.263323

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