Article
Still-Frame Image Transmission using DPCM/Interpolative Coding
Proceedings of the IEEE Region 5 Conference, 1988: 'Spanning the Peaks of Electrotechnology'
Abstract
Two methods of combining DPCM (differential pulse-code modulation) and interpolation are proposed for compressing still-frame teleconferencing signals. The first method uses horizontal subsampling, DPCM, and interpolation to achieve a 4:1 compression. The other method is similar but uses vertical subsampling instead. Simulation results indicate that either method can easily achieve the required 2-b/pel data rate with negligible degradation in image quality. Conventional DPCM is shown to perform slightly better in quantitative terms when fixed-wordlength coding is used. However, the two DPCM/interpolation methods offer other advantages when used with a variable-wordlength coder
Meeting Name
IEEE Region 5 Conference, 1988: 'Spanning the Peaks of Electrotechnology'
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
- DPCM,
- Data Compression,
- Differential Pulse-Code Modulation,
- Encoding,
- Fixed-Wordlength Coding,
- Horizontal Subsampling,
- Image Quality,
- Interpolation,
- Interpolative Coding,
- Pulse-Code Modulation,
- Still Frame Image Transmission,
- Still-Frame Teleconferencing Signals,
- Teleconferencing,
- Vertical Subsampling,
- Video Signals
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1988 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
1-1-1988
Publication Date
01 Jan 1988
Disciplines
Citation Information
Brindala Mallappa and Norman R. Cox. "Still-Frame Image Transmission using DPCM/Interpolative Coding" Proceedings of the IEEE Region 5 Conference, 1988: 'Spanning the Peaks of Electrotechnology' (1988) Available at: http://works.bepress.com/norman-cox/2/