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ICMCS
2005
IEEE
86views Multimedia» more  ICMCS 2005»
15 years 5 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»
15 years 4 months 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
15 years 3 months 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
14 years 3 months 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
16 years 1 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...