Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/261
PIRA download icon_1.1View/Download Full Text
Title: Dynamic frame skipping for high-performance transcoding
Authors: Fung, KT
Chan, YL 
Siu, WC 
Issue Date: 2001
Source: 2001 International Conference on Image Processing : ICIP : proceedings : 7-10 October, 2001, Thessaloniki, Greece, p. 425-428
Abstract: Transcoding is a process of converting a previously compressed video bitstream into a lower bit-rate bitstream. When some incoming frames are dropped for the frame-rate conversion in transcoding, the newly quantized DCT coefficients of prediction error need to be re-computed, which can create an undesirable complexity as well as introduce re-encoding error. In this paper, we propose new architecture of frame-skipping transcoder to improve picture quality and to reduce complexity. It is observed that re-encoding error is reduced significantly when the strategy of direct summation of DCT coefficients and the error compensation feedback loop are employed. Furthermore, we propose a frame-rate control scheme which can dynamically adjust the number of skipped frames according to the incoming motion vectors and the re-encoding error due to transcoding such that the decoded sequence can have smooth motion as well as better transcoded pictures. Experimental results show that, as compared to the conventional transcoder, the new frame-skipping transcoder is more robust, produces smaller requantization errors, and has simple computational complexity.
Keywords: Video bitstreams
Frame-skipping transcoder
Pixel-domain transcoding
DCT coefficients
Publisher: IEEE
ISBN: 0-7803-6725-1
Rights: © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Appears in Collections:Conference Paper

Files in This Item:
File Description SizeFormat 
IEEE_DYNAMIC FRAME_p425.pdf437.77 kBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

105
Last Week
1
Last month
Citations as of Mar 24, 2024

Downloads

132
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

14
Last Week
0
Last month
0
Citations as of Mar 22, 2024

WEB OF SCIENCETM
Citations

6
Last Week
0
Last month
0
Citations as of Mar 28, 2024

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.