Sciweavers

ICIP
2004
IEEE
14 years 11 months ago
Drift reduction for a H.264/AVC fine grain scalability with motion compensation architecture
The recent advances in non-scalable video encoding brought by the H.264/AVC standard offered significant improvements in terms of rate-distortion performance. This paper proposes ...
João Ascenso, Fernando Pereira
ICIP
2004
IEEE
14 years 11 months ago
Rotation and cropping resilient data hiding with zernike moments
Most digital data hiding schemes are sensitive to simple geometric attacks namely rotation, cropping, and scaling. Of these, rotational attacks possess the capability to not only ...
Palak K. Amin, Koduvayur P. Subbalakshmi
ICIP
2004
IEEE
14 years 11 months ago
Motion estimation in high resolution image reconstruction from compressed video sequences
In order to obtain a high resolution image from a compressed video sequence it is essential to correctly estimate the motion vectors in the sequence. Most of the approaches report...
Luis D. Alvarez, Rafael Molina, Aggelos K. Katsagg...
ICIP
2004
IEEE
14 years 11 months ago
Improvement of phase-based algorithms for disparity estimation by means of magnitude information
Estimating depth information from two-dimensional stereoscopic image pairs is an important task in image processing. The disparity, i.e. the displacement of corresponding pixels i...
Udo Ahlvers, Udo Zölzer
ICIP
2004
IEEE
14 years 11 months ago
Robust ego-motion estimation and 3d model refinement using depth based parallax model
We present an iterative algorithm for robustly estimating the egomotion and refining and updating a coarse, noisy and partial depth map using a depth based parallax model and brig...
Amit K. Agrawal, Rama Chellappa
ICIP
2004
IEEE
14 years 11 months ago
Texture analysis using adaptive biorthogonal wavelet packets
We discuss the use of adaptive biorthogonal wavelet packet bases in a probabilistic approach to texture analysis, thus combining the advantages of biorthogonal wavelets (FIR, line...
G. Charith K. Abhayaratne, Ian Jermyn, Josiane Zer...
ICIP
2004
IEEE
14 years 11 months ago
Wyner-ziv video coding with hash-based motion compensation at the receiver
In current interframe video compression systems, the encoder performs predictive coding to exploit the similarities of successive frames. The Wyner-Ziv Theorem on source coding wi...
Anne Aaron, Shantanu Rane, Bernd Girod
ICIP
2004
IEEE
14 years 11 months ago
A video coding system for sign language communication at low bit rates
Dimitris Agrafiotis, Cedric Nishan Canagarajah, Da...
ICIP
2005
IEEE
14 years 11 months ago
Hiding privacy information in video surveillance system
This paper proposes a detailed framework of storing privacy information in surveillance video as a watermark. Authorized personnel is not only removed from the surveillance video ...
Wei Zhang, Sen-Ching S. Cheung, Minghua Chen
ICIP
2005
IEEE
14 years 11 months ago
Quantifying the coding power of zerotrees of wavelet coefficients: a degree-k zerotree model
A degree-k zerotree model is presented, in order to quantify the coding power of zerotrees in wavelet-based image coding. Based on the model, the coding behaviors of modern zerotr...
Yushin Cho, William A. Pearlman