This paper investigates a new stability criterion for generalized (Q,S,R) — α dissipativity for externally interfered discrete systems with saturation overflow nonlinearity. The proposed criterion is capable of esta...
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This paper investigates a new stability criterion for generalized (Q,S,R) — α dissipativity for externally interfered discrete systems with saturation overflow nonlinearity. The proposed criterion is capable of establishing various specific criteria for H ∞ , mixed H ∞ /passivity, and passivity performances in an integrated system through manipulation in weight matrices. Further, an exponential stability criterion for the discrete system with generalized dissipativity is also presented. To facilitate the ease of traceability, the proposed conditions are built in terms of linear matrix inequality. Appropriate numerical examples are used to support the validity of the proposed work.
We study the problem of representing images within a multimedia Database Management System (DBMS), in order to support fast retrieval operations without compromising storage efficiency. To achieve this goal, we propos...
We study the problem of representing images within a multimedia Database Management System (DBMS), in order to support fast retrieval operations without compromising storage efficiency. To achieve this goal, we propose new image coding techniques which combine a wavelet representation, embedded coding of the wavelet coefficients, and segmentation of image-domain regions in the wavelet domain. A bitstream is generated in which each image region is encoded independently of other regions, without having to explicitly store information describing the regions. Simulation results show that our proposed algorithms achieve coding performance which compares favorably, both perceptually and objectively, to that achieved using state-of-the-art image/video coding techniques while additionally providing region-based support.
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