Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Multi-disciplinary Studies | en_US |
| dc.creator | Liu, Tit-pang | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/5150 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | - |
| dc.rights | All rights reserved | en_US |
| dc.title | Image data compression for a multimedia system | en_US |
| dcterms.abstract | Multimedia computer applications require compression and decompression of image data. The JPEG (Joint Photographic Experts Group) has defined the first international standard for compression and decompression of continuous-tone still images. Today, high speed JPEG compatible compression and decompression hardwares are usually built with hardwired processing elements, which are not flexible and prone to obsoleteness if new standards emerge. Another approach of using latest DSP (Digital Signal Processors) to implement JPEG hardware is discussed in this dessertation. The largest benefit of using DSP is to preserve hardware investment by just having the need to upgrade program codes only when new standards emerge. In this project, a Local CPU Bus DSPB (Digital Signal Processing Board) which having 33MFLOPs processing speed and effective data transfer rate of 45MB per second has been developed according to the JPEG Baseline Method. An introduction to image data compression and a breif description of the JPEG Baseline Mode of Operation are provided. The latest VL-BUS (VESA CPU Local Bus) technology for Personal Computer which used by the DSPB to direct interface with the 486 Host CPU is discussed. Softwares for JPEG Baseline method of compression and decompression have been developed, an intelligent Host Loader program has also been developed which can be used to download direct output codes of the DSP's Optimized C-compiler to the DSPB for execution. Compression and decompression performance, accuracy of the DSPB are investigated and discussed. | en_US |
| dcterms.extent | 70, [19] leaves : ill. ; 30 cm | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 1994 | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.LCSH | Image compression -- Data processing | en_US |
| dcterms.LCSH | Image processing -- Digital techniques | en_US |
| dcterms.LCSH | Multimedia systems | en_US |
| dcterms.LCSH | Hong Kong Polytechnic -- Dissertations | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b11829552.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.2 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/5150