This thesis proposes a novel system to determine the best representation of a
video in the sense that, a user watching the video reaches the highest level of
satisfaction possible, given the resource capabilities of the viewing device. Utility
theory is used to obtain a utility function representing the user satisfaction as a
function of video coding parameters, and the viewing device capabilities. The
utility function is formulated as the weighted sum of three individual components.
These components are chosen such that, the satisfaction on any one of the
components is independent of the satisfaction on every other component. The
advantage of such decomposition is the ability to express individual components
as simple mathematical relations, modeling user satisfaction. Afterwards, the
unknown parameters of these models are determined by results of subjective tests,
performed by a multitude of users. Finally, simulated annealing is utilized to find the global optimum of this utility function representing the user satisfaction.
Simulation results based on subjective viewing tests on a resource limited mobile
device indicate a consistent user satisfaction by the determined optimal encoding
parameters of the video.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/1124148/index.pdf |
| Date | 01 January 2003 |
| Creators | Onur, Ozgur Deniz |
| Contributors | Alatan, Aydin A. |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
Page generated in 0.0019 seconds