Sciweavers

1344 search results - page 28 / 269
» Quantization
Sort
View
CORR
2007
Springer
59views Education» more  CORR 2007»
13 years 9 months ago
On the use of self-organizing maps to accelerate vector quantization
Self-organizing maps (SOM) are widely used for their topology preservation property: neighboring input vectors are quantiÿed (or classiÿed) either on the same location or on nei...
Eric de Bodt, Marie Cottrell, Patrick Letré...
ICASSP
2011
IEEE
13 years 1 months ago
Entropy-constrained quantization of exponentially damped sinusoids parameters
Sinusoidal modeling is traditionally one of the most popular techniques for low bitrate audio coding. Usually, the sinusoidal parameters are kept constant within a time segment bu...
Olivier Derrien, Roland Badeau, Gaël Richard
ICIP
2003
IEEE
14 years 11 months ago
Spread transform watermarking for video sources
Spread Transform (ST) is a quantization watermarking algorithm in which vectors of the wavelet coefficients of a host work are quantized, using one of two dithered quantizers, to ...
John Earl, Nick G. Kingsbury
ICASSP
2007
IEEE
14 years 4 months ago
Flicker Suppression in JPEG2000 using Segmentation-Based Adjustment of Block Truncation Lengths
Flickering is a temporal visual artifact that affects compressed video. It is prominent in intra-frame video coders and is largely the result of content variations and quantizatio...
Athanasios Leontaris, Yoshihide Tonomura, Takayuki...
ICMCS
2005
IEEE
106views Multimedia» more  ICMCS 2005»
14 years 3 months ago
Watermarking based Image Authentication using Feature Amplification
In a typical content and watermarking based image authentication approach, a feature is extracted from the given image, and then embedded back into the image using a watermarking ...
Shuiming Ye, Ee-Chien Chang, Qibin Sun