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» On Lattice Quantization Noise
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ICIP
1998
IEEE
16 years 7 months ago
Recovering from Bit Errors in Scalar-Quantized Discrete Wavelet Transformed Images
In this paper we study the e ects of transmission noise on xed-length coded wavelet coe cients. We extend our previous work on maximum a posteriori detectors 1] to include interbi...
Alexander E. Mohr, Eve A. Riskin, Richard E. Ladne...
IPCV
2007
15 years 7 months 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 ...
MTA
2011
260views Hardware» more  MTA 2011»
15 years 21 days ago
An audio watermarking scheme using singular value decomposition and dither-modulation quantization
Quantization index modulation is one of the best methods for performing blind watermarking, due to its simplicity and good rate-distortion-robustness tradeoffs. In this paper, a ne...
Vivekananda Bhat K., Indranil Sengupta, Abhijit Da...
TASLP
2008
104views more  TASLP 2008»
15 years 5 months ago
A New Model-Based Algorithm for Optimizing the MPEG-AAC in MS-Stereo
Abstract--In this paper, a new model-based algorithm for optimizing the MPEG-Advanced Audio Coder (AAC) in MS-stereo mode is presented. This algorithm is an extension to stereo sig...
Olivier Derrien, Gaël Richard
CORR
2011
Springer
205views Education» more  CORR 2011»
15 years 7 days ago
Detection of objects in noisy images and site percolation on square lattices
Abstract: We propose a novel probabilistic method for detection of objects in noisy images. The method uses results from percolation and random graph theories. We present an algori...
Mikhail A. Langovoy, Olaf Wittich