A practical solution to transform-domain rounding
Resource
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Journal
2005 International Conference on Wireless Networks, Communications and Mobile Computing
Journal Volume
1
Pages
487-492
Date Issued
2005
Author(s)
Abstract
In many multimedia applications, manipulation of video signals is preferably performed in the transform domain. Most of such operations are derived from their counterparts in the pixel domain. However, the rounding operation can not be obtained this way because it is a nonlinear operation. Without a proper treatment, it may become a major source of errors for multimedia systems, causing a mismatch between the encoder and the decoder. This problem seems to have been largely ignored. In this paper, we propose a practical solution to this problem by a thorough examination of the mathematical property of the rounding error in the context of transform-domain video transcoding and demonstrate its performance. © 2005 IEEE.
Other Subjects
Decoding; Error analysis; Mobile computing; Multimedia systems; Nonlinear systems; Video signal processing; Encoders; Pixel domains; Rounding errors; Transform domain rounding; Mathematical transformations
Type
conference paper
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