Rate estimation for H.264/AVC spatial resolution reduction

The emergence of wireless networks has posed new challenges for multimedia content providers. In particular, many existing video contents have bit-rates and resolutions far exceeding the capability of wireless networks and mobile devices and they need to be adapted before transmission. In this paper...

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Bibliographic Details
Main Authors: Wong, P.H.W., Hung, R.T.W., Lee, J.Y.B., Liew, S.C., Kim, C.S., Chin, R.T.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Artificial intelligence
Automatic voltage control
Bit rate
Computer science
control theory
systems
Computer systems and distributed systems. User interface
Discrete cosine transforms
Estimation error
Exact sciences and technology
Lifting equipment
Pattern recognition. Digital image processing. Computational geometry
Signal resolution
Software
Spatial resolution
Streaming media
Testing
Wireless networks
Online Access:Request full text
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Summary:The emergence of wireless networks has posed new challenges for multimedia content providers. In particular, many existing video contents have bit-rates and resolutions far exceeding the capability of wireless networks and mobile devices and they need to be adapted before transmission. In this paper, we propose a technique using /spl rho/-domain information to estimate the bit rate of down-sampled video in the H.264/AVC format. The bit rate is estimated in two stages. In the initialization stage, we use a low-complexity algorithm to estimate the /spl rho/-domain parameters for half and quarter resolutions, respectively. In the refinement stage, the estimation error is feed-forwarded to improve the estimation accuracy. Experimental results show that the proposed technique can estimate the bit rate accurately at a wide range of down-sampling ratios.
ISSN:1522-4880
2381-8549
DOI:10.1109/ICIP.2004.1421679