Share This Author
Multi-Exposure and Multi-Focus Image Fusion in Gradient Domain
Experimental results and comparison with other fusion techniques indicate that the proposed algorithm is fast and produces similar or better results than existing techniques for both multi-exposure as well as multi-focus images.
Practical-BIBO stability of n-dimensional discrete systems
It is shown that the conventional definition of BIBO stability for n-dimensional discrete systems is unnecessarily restrictive for most practical applications. The conventional definition permits the…
Adaptive IIR filtering algorithms for system identification: a general framework
A number of known adaptive IIR filtering algorithms are presented using a unifying framework that is useful to interrelate the algorithms and to derive their properties, and special attention is given to issues such as the motivation to derive each algorithm and the properties of the solution after convergence.
Stability and the matrix Lyapunov equation for delay differential systems
Abstract Asymptotic stability independent of the delay of linear differential delay systems with commensurate and non-commensurate delays is analysed using 2-D (two-dimensional) and n-D…
An FPGA implementation of the flexible triangle search algorithm for block based motion estimation
- M. Rehan, M. W. El-Kharashi, P. Agathoklis, F. Gebali
- Computer ScienceIEEE International Symposium on Circuits and…
- 21 May 2006
Simulation results indicate that the FTS reduces the number of block matching operations compared with other fast block matching algorithms without affecting quality or compression ratio of the compressed bitstream.
Stability and the matrix Lyapunov equation for discrete 2-dimensional systems
The paper proves that the existence of a positive definite solution pair to the 2-D Lyapunov equation is not necessary for stability, disproving a long-standing conjecture.
A new DOA estimation technique based on subarray beamforming
- Nanyan Y. Wang, P. Agathoklis, A. Antoniou
- EngineeringIEEE Transactions on Signal Processing
- 1 September 2006
A new direction-of-arrival (DOA) estimation technique using subarray beamforming that offers significantly improved estimation resolution, capacity, and accuracy relative to existing techniques is proposed.
The margin of stability of 2-D linear discrete systems
In this paper the margin of stability for a 2-D discrete system is considered. The definition of the margin of stability for the 1-D case is extended to the 2-D case in terms of analytic regions of…
Lower bounds for the stability margin of discrete two-dimensional systems based on the two-dimensional Lyapunov equation
- P. Agathoklis
- 1 June 1988
Lower bounds for the stability margin of a 2-D discrete system described with a state-space model are developed. These bounds are given as a function of the positive definite solutions of the 2-D…
Model reduction of linear discrete systems via weighted impulse response gramians
A new method for model reduction of linear discrete systems is proposed, based on the weighted impulse response gramians proposed here for discrete systems, which results in reduced-order models that are stable if the original system is stable.