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The JPEG that applies discrete cosine transform (DCT) is one of the most popular image compression methods. Enhancement in the compressed domain offers two major advantages, including low computational complexity and storage space. To enhance an image in compression domain, the main issue is to develop an effective technique that limits the introduction of blocking artifacts. In this paper, we propose...
We consider service enhancement in a wireless environment in which clients try to obtain service from a set of servers. Each client desires a minimum overall service success probability, which is achieved by establishing multiple independent connections with multiple servers. Given the service success probability of each potential client-server connection, our problem is to assign the connections...
Supporting digital video cassette recording (VCR) trick-play functionalities (e.g. random access, fast-forward play, fast-reverse play) is desirable for compressed video streams. However, due to strong inter-frame dependencies introduced by motion compensated prediction (MCP), the computational complexity and memory requirement is drastically increased. Tradeoffs between coding efficiency and decoding...
By analyzing the model for cardinal direction relations with objects' MBR (minimum boundary rectangle), the method of judging convex relations is put forward. The method and algorithm of consistency checking for atomic cardinal direction relations networks are proposed by combining path-consistency algorithm with the method of judging convex relations, as well as the algorithmic analysis and corresponding...
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