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This paper describes adaptively parallel computations under Equus. These computations execute on a processor pool, and expand and contract as the number of processor nodes allocated to them varies over their run-time. They are based upon a hierarchical master-worker structure. The number of worker processes changes with the number of allocated nodes, and so(More)
Based on real-world image sequence characteristics of center-biased motion vector distribution, a Hexagonal (HS) algorithm with center-biased checking point pattern for fast block motion estimation is proposed. The HS is compared with full search (FS), four-step search (4SS), new three-step search (NTSS), and recently proposed diamond search (DS) methods.(More)
Integer mapping is critical for lossless source coding and has been used for multicomponent image compression in the new international image compression standard JPEG 2000. In this paper, starting from block factorizations for any nonsingular transform matrix, we introduce two types of parallel elementary reversible matrix (PERM) factorizations which are(More)
This correspondence describes a European Union supported collaborative project called CustomTV based on the premise that future TV sets will provide all sorts of multimedia information and interactivity, as well as manage all such services according to each user’s or group of user’s preferences/profiles. We have demonstrated the potential of recent(More)
The traditional boundaries between the computer, TV/Film industries and telecommunications, are blurring. Therein lies the focus of MPEG-4: the convergence of common applications of the above mentioned three industries. MPEG-4 aims to satisfy the new requirements and expectations, by providing an audio visual coding standard allowing for interactivity, high(More)
The form, and means of delivery, of digital multimedia content are developing rapidly. This paper outlines our approach to exploiting these developments through the integration of broadcast and internet technology. We discuss the technological developments which underpin the convergence of broadcast and internet, the novel services and applications it(More)