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ICMCS
2005
IEEE
86views Multimedia» more  ICMCS 2005»
14 years 2 months ago
A Perceptual Performance Measure for Adaptive Echo Cancellers in Packet-Based Telephony
This paper investigates performance measures of adaptive echo cancellers for packet-based telephony. It is shown that steady-state echo return loss enhancement (ERLE) does not acc...
James D. Gordy, Rafik A. Goubran
ISLPED
1997
ACM
85views Hardware» more  ISLPED 1997»
14 years 28 days ago
Low power motion estimation design using adaptive pixel truncation
Power consumption is very critical for portable video applications such as portable video-phone. Motion estimation in the video encoder requires huge amount of computation and hen...
Zhong-Li He, Kai-Keung Chan, Chi-Ying Tsui, Ming L...
ESTIMEDIA
2004
Springer
14 years 14 days ago
Adaptive spectrum-based variable bit truncation of discrete cosine transform (DCT) for energy-efficient wireless multimedia comm
This paper presents a new adaptive scheme to reduce the computation energy of the discrete cosine transform (DCT) architecture for image/video coding. The scheme employs the noise ...
Feng Liu, Chi-Ying Tsui
ICASSP
2011
IEEE
13 years 14 days ago
Space-time adaptive processing for range-folded spread-Doppler radar clutter mitigation
This paper concerns the detection of radar targets masked by Doppler-spread surface backscatter from points beyond the radar’s maximum unambiguous range. Current methods for mit...
William W. Lee, Jeffrey L. Krolik
ICIP
2007
IEEE
14 years 10 months ago
Unsupervised Lips Segmentation Based on ROI Optimisation and Parametric Model
Lips segmentation is a very important step in many applications such as automatic speech reading, MPEG-4 compression, special effects, facial analysis and emotion recognition. In ...
Christian Bouvier, Pierre-Yves Coulon, Xavier Mald...