Novel Approaches in Structured Light Illumination

Among the various approaches to 3-D imaging, structured light illumination (SLI) is widely spread. SLI employs a pair of digital projector and digital camera such that the correspondences can be found based upon the projecting and capturing of a group of designed light patterns. As an active sensing...

Full description

Bibliographic Details
Main Author: Wang, Yongchang
Format: Others
Published: UKnowledge 2010
Subjects:
Online Access:http://uknowledge.uky.edu/gradschool_diss/116
http://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1124&context=gradschool_diss
id ndltd-uky.edu-oai-uknowledge.uky.edu-gradschool_diss-1124
record_format oai_dc
spelling ndltd-uky.edu-oai-uknowledge.uky.edu-gradschool_diss-11242015-04-11T05:01:02Z Novel Approaches in Structured Light Illumination Wang, Yongchang Among the various approaches to 3-D imaging, structured light illumination (SLI) is widely spread. SLI employs a pair of digital projector and digital camera such that the correspondences can be found based upon the projecting and capturing of a group of designed light patterns. As an active sensing method, SLI is known for its robustness and high accuracy. In this dissertation, I study the phase shifting method (PSM), which is one of the most employed strategy in SLI. And, three novel approaches in PSM have been proposed in this dissertation. First, by regarding the design of patterns as placing points in an N-dimensional space, I take the phase measuring profilometry (PMP) as an example and propose the edge-pattern strategy which achieves maximum signal to noise ratio (SNR) for the projected patterns. Second, I develop a novel period information embedded pattern strategy for fast, reliable 3-D data acquisition and reconstruction. The proposed period coded phase shifting strategy removes the depth ambiguity associated with traditional phase shifting patterns without reducing phase accuracy or increasing the number of projected patterns. Thus, it can be employed for high accuracy realtime 3-D system. Then, I propose a hybrid approach for high quality 3-D reconstructions with only a small number of illumination patterns by maximizing the use of correspondence information from the phase, texture, and modulation data derived from multi-view, PMP-based, SLI images, without rigorously synchronizing the cameras and projectors and calibrating the device gammas. Experimental results demonstrate the advantages of the proposed novel strategies for 3-D SLI systems. 2010-01-01T08:00:00Z text application/pdf http://uknowledge.uky.edu/gradschool_diss/116 http://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1124&context=gradschool_diss University of Kentucky Doctoral Dissertations UKnowledge Structured light illumination 3-D reconstruction period coded phase shifting edge-pattern hybrid system Computer Engineering
collection NDLTD
format Others
sources NDLTD
topic Structured light illumination
3-D reconstruction
period coded phase shifting
edge-pattern
hybrid system
Computer Engineering
spellingShingle Structured light illumination
3-D reconstruction
period coded phase shifting
edge-pattern
hybrid system
Computer Engineering
Wang, Yongchang
Novel Approaches in Structured Light Illumination
description Among the various approaches to 3-D imaging, structured light illumination (SLI) is widely spread. SLI employs a pair of digital projector and digital camera such that the correspondences can be found based upon the projecting and capturing of a group of designed light patterns. As an active sensing method, SLI is known for its robustness and high accuracy. In this dissertation, I study the phase shifting method (PSM), which is one of the most employed strategy in SLI. And, three novel approaches in PSM have been proposed in this dissertation. First, by regarding the design of patterns as placing points in an N-dimensional space, I take the phase measuring profilometry (PMP) as an example and propose the edge-pattern strategy which achieves maximum signal to noise ratio (SNR) for the projected patterns. Second, I develop a novel period information embedded pattern strategy for fast, reliable 3-D data acquisition and reconstruction. The proposed period coded phase shifting strategy removes the depth ambiguity associated with traditional phase shifting patterns without reducing phase accuracy or increasing the number of projected patterns. Thus, it can be employed for high accuracy realtime 3-D system. Then, I propose a hybrid approach for high quality 3-D reconstructions with only a small number of illumination patterns by maximizing the use of correspondence information from the phase, texture, and modulation data derived from multi-view, PMP-based, SLI images, without rigorously synchronizing the cameras and projectors and calibrating the device gammas. Experimental results demonstrate the advantages of the proposed novel strategies for 3-D SLI systems.
author Wang, Yongchang
author_facet Wang, Yongchang
author_sort Wang, Yongchang
title Novel Approaches in Structured Light Illumination
title_short Novel Approaches in Structured Light Illumination
title_full Novel Approaches in Structured Light Illumination
title_fullStr Novel Approaches in Structured Light Illumination
title_full_unstemmed Novel Approaches in Structured Light Illumination
title_sort novel approaches in structured light illumination
publisher UKnowledge
publishDate 2010
url http://uknowledge.uky.edu/gradschool_diss/116
http://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1124&context=gradschool_diss
work_keys_str_mv AT wangyongchang novelapproachesinstructuredlightillumination
_version_ 1716800485196824576