<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T15:27:32Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/46126" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/46126</identifier><datestamp>2022-01-13T07:54:29Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131023</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Jonathan How.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">He, Ray C</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2009-06-30T17:22:48Z</dim:field>
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   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">2008</dim:field>
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   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">392312808</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (leaves 69-72).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">Environmental awareness is an important prerequisite for autonomous behavior in vehicles. Without it, robots are unable to react to unknown surroundings and require extensive human input for tasks such as target identification and obstacle avoidance. This would negate many of the advantages of having an autonomous system. Giving a vehicle the ability to map its surroundings and use the data effectively will allow humans to spend less time scanning the vehicle's video feed and providing direct navigational commands. This thesis details the development of a real-time, extensible vision and mapping system that provides an interface for control systems to access details of the map. It addresses the problems of image capture, signal noise, and three dimensional map storage. It extends existing real-time stereo mapping systems by tolerating unsynchronized stereo cameras. Results indicate that synchronization allows the system to locate points significantly more accurately than the system without synchronization. When compared with a monocular mapping system, synchronized stereo provides a more detailed map and will tolerate more erroneous localization data. Because it is developed with an abstract localization system, this system is designed to be modular and easily extensible.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Ray C. He.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">M.Eng.</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">89 leaves</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">M.I.T. theses are protected by 
copyright. They may be viewed from this source for any purpose, but 
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   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Electrical Engineering and Computer Science.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Stereo vision and mapping with unsynchronized cameras</dim:field>
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   	&lt;Title>Stereo vision and mapping with unsynchronized cameras&lt;/Title>
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   	&lt;PublicationDate>2008&lt;/PublicationDate>
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   	&lt;Abstract>Environmental awareness is an important prerequisite for autonomous behavior in vehicles. Without it, robots are unable to react to unknown surroundings and require extensive human input for tasks such as target identification and obstacle avoidance. This would negate many of the advantages of having an autonomous system. Giving a vehicle the ability to map its surroundings and use the data effectively will allow humans to spend less time scanning the vehicle&amp;apos;s video feed and providing direct navigational commands. This thesis details the development of a real-time, extensible vision and mapping system that provides an interface for control systems to access details of the map. It addresses the problems of image capture, signal noise, and three dimensional map storage. It extends existing real-time stereo mapping systems by tolerating unsynchronized stereo cameras. Results indicate that synchronization allows the system to locate points significantly more accurately than the system without synchronization. When compared with a monocular mapping system, synchronized stereo provides a more detailed map and will tolerate more erroneous localization data. Because it is developed with an abstract localization system, this system is designed to be modular and easily extensible.&lt;/Abstract>
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