Color-Stripe Structured Light Robust to Surface Color and Discontinuity

TL;DR

This paper introduces a robust structured light method using multiple color stripes and log-gradient filters to improve 3D imaging accuracy despite surface color interference and discontinuities.

Contribution

It proposes novel techniques combining multi-directional color stripes and log-gradient filtering to enhance stripe identification robustness in structured light systems.

Findings

Effective reduction of surface color disturbance.

Improved stripe identification near discontinuities.

Successful experimental validation.

Abstract

Multiple color stripes have been employed for structured light-based rapid range imaging to increase the number of uniquely identifiable stripes. The use of multiple color stripes poses two problems: (1) object surface color may disturb the stripe color and (2) the number of adjacent stripes required for identifying a stripe may not be maintained near surface discontinuities such as occluding boundaries. In this paper, we present methods to alleviate those problems. Log-gradient filters are employed to reduce the influence of object colors, and color stripes in two and three directions are used to increase the chance of identifying correct stripes near surface discontinuities. Experimental results demonstrate the effectiveness of our methods.