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UBC Theses and Dissertations
Computation-distortion optimized DCT-based video coding Ismaeil, Ismaeil-Ragab
Abstract
The rapidly expanding field of multimedia communications has fueled significant research and development work in the area of real-time video encoding. Dedicated hardware solutions have reached maturity and cost-efficient hardware encoders are being developed by several manufacturers. However, software solutions based on general purpose processors or programmable digital signal processors (DSPs) have significant merits. Towards this objective, we have developed a flexible framework for video encoding that yields very good computation-performance tradeoffs. The proposed framework consists of a set of optimized core components: motion estimation, the Discrete Cosine Transform (DCT), quantization, and mode selection. Each of the components can be configured to achieve a desired computation-performance tradeoff. The components can be assembled to obtain encoders with varying degrees of computational complexity. Computation control has been implemented within the proposed framework to allow the resulting algorithms to adapt to the available computational resources. The proposed framework was applied to MPEG-2 and H.263 encoding using Intel's Pentium/MMX desktop processor. Excellent speed-performance tradeoffs were obtained.
Item Metadata
Title |
Computation-distortion optimized DCT-based video coding
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2001
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Description |
The rapidly expanding field of multimedia communications has fueled significant
research and development work in the area of real-time video encoding.
Dedicated hardware solutions have reached maturity and cost-efficient
hardware encoders are being developed by several manufacturers. However,
software solutions based on general purpose processors or programmable digital
signal processors (DSPs) have significant merits. Towards this objective,
we have developed a flexible framework for video encoding that yields very
good computation-performance tradeoffs. The proposed framework consists
of a set of optimized core components: motion estimation, the Discrete Cosine
Transform (DCT), quantization, and mode selection. Each of the components
can be configured to achieve a desired computation-performance tradeoff. The
components can be assembled to obtain encoders with varying degrees of computational
complexity. Computation control has been implemented within the
proposed framework to allow the resulting algorithms to adapt to the available
computational resources. The proposed framework was applied to MPEG-2
and H.263 encoding using Intel's Pentium/MMX desktop processor. Excellent
speed-performance tradeoffs were obtained.
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Extent |
8286540 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-10-09
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0065595
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2001-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.