Advanced transcoding techniques for video communication

Video transcoding is an efficient tool for video adaptation to provide seamless service for end users. In this works, three transcoding schemes are discussed to enhance the output video quality. Downsizing transcoding was the first main concern. The resizing algorithms were discussed first. Two resi...

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Main Author: Shu, Haiyan
Other Authors: Chau, Lap Pui
Format: Theses and Dissertations
Published: 2008
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Online Access:https://hdl.handle.net/10356/3459
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-34592023-07-04T16:40:03Z Advanced transcoding techniques for video communication Shu, Haiyan Chau, Lap Pui School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing Video transcoding is an efficient tool for video adaptation to provide seamless service for end users. In this works, three transcoding schemes are discussed to enhance the output video quality. Downsizing transcoding was the first main concern. The resizing algorithms were discussed first. Two resizing algorithms were proposed to realize arbitrary downsizing in the DCT domain directly. Then, frame size selection problem was solved by the proposed scheme. Next, frame skipping transcoding was discussed. In this work, the concept of ``motion change'' was introduced to evaluate the motion continuity. Combined with the motion activity information, these two parts of information were used to determine the skipping pattern of the transcoded bitstream. The nonlinear motion in the transcoded bitstream is reduced. Last, error resilient transcoding was investigated. Based on the conventional rate-distortion optimized intra refresh scheme, an enhanced intra/inter macroblock mode decision scheme was proposed, which considers not only the error propagated from previous frames, but also the error propagated to the next frame. DOCTOR OF PHILOSOPHY (EEE) 2008-09-17T09:30:31Z 2008-09-17T09:30:31Z 2007 2007 Thesis Shu, H. (2007). Advanced transcoding techniques for video communication. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/3459 10.32657/10356/3459 Nanyang Technological University application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
topic DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
Shu, Haiyan
Advanced transcoding techniques for video communication
description Video transcoding is an efficient tool for video adaptation to provide seamless service for end users. In this works, three transcoding schemes are discussed to enhance the output video quality. Downsizing transcoding was the first main concern. The resizing algorithms were discussed first. Two resizing algorithms were proposed to realize arbitrary downsizing in the DCT domain directly. Then, frame size selection problem was solved by the proposed scheme. Next, frame skipping transcoding was discussed. In this work, the concept of ``motion change'' was introduced to evaluate the motion continuity. Combined with the motion activity information, these two parts of information were used to determine the skipping pattern of the transcoded bitstream. The nonlinear motion in the transcoded bitstream is reduced. Last, error resilient transcoding was investigated. Based on the conventional rate-distortion optimized intra refresh scheme, an enhanced intra/inter macroblock mode decision scheme was proposed, which considers not only the error propagated from previous frames, but also the error propagated to the next frame.
author2 Chau, Lap Pui
author_facet Chau, Lap Pui
Shu, Haiyan
format Theses and Dissertations
author Shu, Haiyan
author_sort Shu, Haiyan
title Advanced transcoding techniques for video communication
title_short Advanced transcoding techniques for video communication
title_full Advanced transcoding techniques for video communication
title_fullStr Advanced transcoding techniques for video communication
title_full_unstemmed Advanced transcoding techniques for video communication
title_sort advanced transcoding techniques for video communication
publishDate 2008
url https://hdl.handle.net/10356/3459
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