Color-Stripe Structured Light Robust to Surface Color and Discontinuity
This work addresses robustness issues in structured light imaging for applications like 3D scanning, but it is incremental as it builds on existing multi-color stripe methods.
The paper tackled the problems of object surface color disturbing stripe color and insufficient adjacent stripes near surface discontinuities in structured light-based rapid range imaging, presenting methods that use log-gradient filters and multi-directional color stripes to improve robustness, with experimental results showing effectiveness.
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.