Optical Three-Dimensional Image Matching Using Holographic Information
| dc.contributor.author | Kim, Taegeun | en |
| dc.contributor.committeechair | Poon, Ting-Chung | en |
| dc.contributor.committeemember | Ferrari, Leonard A. | en |
| dc.contributor.committeemember | Abbott, A. Lynn | en |
| dc.contributor.committeemember | Besieris, Ioannis M. | en |
| dc.contributor.committeemember | Indebetouw, Guy J. | en |
| dc.contributor.department | Electrical and Computer Engineering | en |
| dc.date.accessioned | 2014-03-14T20:14:12Z | en |
| dc.date.adate | 2000-09-04 | en |
| dc.date.available | 2014-03-14T20:14:12Z | en |
| dc.date.issued | 2000-07-19 | en |
| dc.date.rdate | 2001-09-04 | en |
| dc.date.sdate | 2000-07-23 | en |
| dc.description.abstract | We present a three-dimensional (3-D) optical image matching technique and location extraction techniques of matched 3-D objects for optical pattern recognition. We first describe the 3-D matching technique based on two-pupil optical heterodyne scanning. A hologram of the 3-D reference object is first created and then represented as one pupil function with the other pupil function being a delta function. The superposition of each beam modulated by the two pupils generates a scanning beam pattern. This beam pattern scans the 3-D target object to be recognized. The output of the scanning system gives out the 2-D correlation of the hologram of the reference object and that of the target object. When the 3-D image of the target object is matched with that of the reference object, the output of the system generates a strong correlation peak. This theory of 3-D holographic matching is analyzed in terms of two-pupil optical scanning. Computer simulation and optical experiment results are presented to reinforce the developed theory. The second part of the research concerns the extraction of the location of a 3-D image matched object. The proposed system basically performs a correlation of the hologram of a 3-D reference object and that of a 3-D target object, and hence 3-D matching is possible. However, the system does not give out the depth location of matched 3-D target objects directly because the correlation of holograms is a 2-D correlation and hence not 3-D shift invariant. We propose two methods to extract the location of matched 3-D objects directly from the correlation output of the system. One method is to use the optical system that focuses the output correlation pattern along depth and arrives at the 3-D location at the focused location. However, this technique has a drawback in that only the location of 3-D targets that are farther away from the 3-D reference object can be extracted. Thus, in this research, we propose another method in which the extraction of a location for a matched 3-D object is possible without the aforementioned drawback. This method applies the Wigner distribution to the power fringe-adjusted filtered correlation output to extract the 3-D location of a matched object. We analyze the proposed method and present computer simulation and optical experiment results. | en |
| dc.description.degree | Ph. D. | en |
| dc.identifier.other | etd-07232000-09480053 | en |
| dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-07232000-09480053/ | en |
| dc.identifier.uri | http://hdl.handle.net/10919/28362 | en |
| dc.publisher | Virginia Tech | en |
| dc.relation.haspart | Dis_edt.pdf | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject | Optical Scanning Holography | en |
| dc.subject | Holographic correlation | en |
| dc.subject | Phase-only holographic information | en |
| dc.subject | 3-D image recognition | en |
| dc.title | Optical Three-Dimensional Image Matching Using Holographic Information | en |
| dc.type | Dissertation | en |
| thesis.degree.discipline | Electrical and Computer Engineering | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | doctoral | en |
| thesis.degree.name | Ph. D. | en |
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