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A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
May 2008
Copyright 2008 Chiao Wang
STEREO PANORAMA VIRTUAL ENVIRONMENTS
by
Chiao Wang
Object Description
| Title | Stereo panorama virtual environments |
| Author | Wang, Chiao |
| Author email | chiaowan@usc.edu |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2008-01-25 |
| Date submitted | 2008 |
| Restricted until | Restricted until 27 Feb. 2010. |
| Date published | 2010-02-27 |
| Advisor (committee chair) | Sawchuk, Alexander A. |
| Advisor (committee member) |
Pryor, Lawrence Jenkins, B. Keith |
| Abstract | In this thesis, we describe the creation of virtual environment systems that can capture and display stereo images. The system can use a variety of display formats including auto-stereoscopic (AS) displays, shutter glasses, and head-mounted display (HMDs), and is suitable for virtual tours of outdoor or indoor sites such as a city tour, museums or galleries. We describe techniques for stereo panoramic image capture, present a general image capture model, specify geometrical parameters, and summarize how various physical parameters affect the perceived depth and image quality. We then describe an efficient stitching algorithm that corrects dynamic exposure variation and removes moving objects without manual selection of ground-truth images.; We also present expressions for the horizontal and vertical disparity of the captured image and describe disparity measurement techniques. We review various disparity adjustment algorithms, and develop an object-based horizontal disparity adjusting algorithm that changes the disparities to enhance or reduce the stereo visual effect for a selected object region rather than for columns of the images.; We describe a disparity morphing tool that enables users to specify the region of interest, select the disparity adjusting methods, and see the results directly on a AS display or with shutter glasses. We also describe the results of several subjective tests that compare system performance using different interaction tools and various displays such as HMD, shutter glasses, or AS displays. Future extension may use a large screen partial or fully panoramic display. In these systems, smaller auto-stereoscopic (AS) panels may be merged for a large screen or panoramic effort, or passive glasses-based technology (polarizing or anaglyph) may provide the stereo effect. |
| Keyword | stereo image processing; panorama imaging; disparity adjusting; virtual environments; image processing |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m1024 |
| Rights | Wang, Chiao |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Wang-20080227 |
| Archival file | uscthesesreloadpub_Volume44/etd-Wang-20080227.pdf |
Description
| Title | Page 1 |
| Full text | A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) May 2008 Copyright 2008 Chiao Wang STEREO PANORAMA VIRTUAL ENVIRONMENTS by Chiao Wang |
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