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JMM2
2008
228views more  JMM2 2008»
13 years 10 months ago
Adaptive AC-Coefficient Prediction for Image Compression and Blind Watermarking
In this work, an adaptive image compression algorithm is proposed based on the prediction of AC coefficients in Discrete Cosine Transform (DCT) block during reconstruction of image...
Kilari Veera Swamy, S. Srinivas Kumar
CSCW
2004
ACM
14 years 4 months ago
Assembling the senses: towards the design of cooperative interfaces for visually impaired users
The needs of blind and visually impaired users are seriously under-investigated in CSCW. We review work on assistive interfaces especially concerning how collaboration between sig...
Fredrik Winberg, John Bowers
ICASSP
2011
IEEE
13 years 2 months ago
Recovery of sparse perturbations in Least Squares problems
We show that the exact recovery of sparse perturbations on the coefficient matrix in overdetermined Least Squares problems is possible for a large class of perturbation structure...
Mert Pilanci, Orhan Arikan
ICASSP
2010
IEEE
13 years 11 months ago
Compressive detection for wide-band spectrum sensing
In this paper we propose a novel wide-band spectrum sensing scheme using compressive sensing. The wide-band signal is fed into a number of wide-band filters and the outputs of th...
Veria Havary-Nassab, Sadiq Hassan, Shahrokh Valaee
IPCV
2007
14 years 8 days ago
Quantization Based Blind Watermarking Algorithm Using DWT
- In this paper a Discrete Wavelet Transform based blind watermarking algorithm is proposed for embedding a grayscale watermark into a grayscale image. A new approach of choosing t...
Shikha Tripathi, Sai Krishnan Ramachandran, Vijay ...