Digital video compression scheme using enhanced fractal coding
Dissertant
Thesis advisor
University
University of Technology
Faculty
-
Department
Computer Sciences Department
University Country
Iraq
Degree
Ph.D.
Degree Date
2009
English Abstract
Delivery of video in the presence of bandwidth constraints is one of the most important video compression problems.
A common approach to the color video compression is started by extracting the frames tram the input video stream and applying intra frame encoding on the reference frames and inter frame encoding is applied on the in-between frames.
In this research project, Four IFS coding have been established and tested.
The first scheme is the traditional Fractal Image Compression (F1C) method; when traditional method is applied the encoding time is 112.03, compression ratio is 8.9 and the quality (PSNR) is 34.34dB.
The second scheme uses the FIC method with a predictor based on centralized moment features, this predictor is introduced to predict the type of symmetry operation required to set the domain block in a proper state to best matches the range block.
The use of this predictor helps in reducing the number of trials of symmetry mappings from 8 trials to only one symmetry case, the proposed predictor reduces the encoding time 15 % when it is compared with the traditional Method.
The third and fourth scheme implies the use of FIC method enhanced by the use of moment descriptor (order-1) and (order-4).
For inter frame encoding a color video compression scheme based on motion block matching method is proposed and designed.
This scheme is used to dynamically partition the video sequences into group of pictures (GOPs).
An enhanced block's motion estimation is proposed and applied ; it is a modified version of Spiral Architecture Search (SA) block matching algorithm.
Main Subjects
Information Technology and Computer Science
Topics
American Psychological Association (APA)
Uqlah, Rahim Abd al-Sahib. (2009). Digital video compression scheme using enhanced fractal coding. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-305282
Modern Language Association (MLA)
Uqlah, Rahim Abd al-Sahib. Digital video compression scheme using enhanced fractal coding. (Doctoral dissertations Theses and Dissertations Master). University of Technology. (2009).
https://search.emarefa.net/detail/BIM-305282
American Medical Association (AMA)
Uqlah, Rahim Abd al-Sahib. (2009). Digital video compression scheme using enhanced fractal coding. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-305282
Language
English
Data Type
Arab Theses
Record ID
BIM-305282
