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INTERACTIVE FAST RANDOM ACCESS, RETRIEVAL, AND
NAVIGATION OF LARGE DATASETS
by
Zihong Fan
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
August 2011
Copyright 2011 Zihong Fan
Object Description
| Title | Interactive fast random access, retrieval, and navigation of large datasets |
| Author | Fan, Zihong |
| Author email | zihongf@gmail.com;zihongfa@usc.edu |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2011-04-20 |
| Date submitted | 2011-08-08 |
| Date approved | 2011-08-09 |
| Restricted until | 2011-08-09 |
| Date published | 2011-08-09 |
| Advisor (committee chair) | Ortega, Antonio |
| Advisor (committee member) |
Teng, Shang-Hua Leahy, Richard M. |
| Abstract | This research is motivated by two important trends. First, more than ever before large amounts of data and information are being accessed through mobile devices such as smart phones, tablet computers, book readers, etc. Second, significant amounts of complex and high-volume information (e.g. maps, medical images, scientific datasets, virtual museums, etc.) are now available over networks. In addition to entertainment applications (e.g. video sharing), a significant driver of traffic over networks is likely to come from professional applications. Such applications, like those that might provide doctors with pervasive access to medical information, will demand high quality performance according to a variety of different metrics, such as latency, resolution, interactivity, and perceptual quality. ❧ We have proposed a novel system for interactive, fast, and random access and navigation of large datasets. Of particular interest in our system is the random retrieval of lower dimensional data from high dimensional datasets. The system makes it possible to allow limited memory mobile devices to quickly access complex large datasets over low-bandwidth connections. This approach can reduce the transmission rate dramatically (by factor of 2) and also improve the level of interactive navigation. Both 2D and 3D systems, referring to the dimensionality of the datasets that may be accessed, for fast and random access have been developed and each system is composed of a tiling scheme, linear searching algorithm, compression methodology, mapping algorithm, and reconstruction scheme. The mapping algorithms can also be applied to various other applications and areas. We also have proposed models for parameter selection and system optimization, tools to both analyze and quantify the benefits of our proposed re-mapping algorithm as well as wavelet based approach 3D system. This work offers both theoretical and practical contributions and can be used in a wide-array of exciting future applications. |
| Keyword | fast random access; large datasets; interactive |
| 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 |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Fan, Zihong |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@dots.usc.edu |
| Archival file | uscthesesreloadpub_Volume71/etd-FanZihong-262.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@dots.usc.edu |
| Full text | INTERACTIVE FAST RANDOM ACCESS, RETRIEVAL, AND NAVIGATION OF LARGE DATASETS by Zihong Fan A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) August 2011 Copyright 2011 Zihong Fan |
