Edward T. Lee

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An approach of representing patterns by trees and processing these trees by fuzzy tree automata is described. Fuzzy tree automata are defined and investigated. The results include that the class of fuzzy root-to-frontier recognizable ¿-trees is closed under intersection, union, and complementation. Thus, the class of fuzzy root-to-frontier recognizable(More)
Pictures can be first approximated by a polygonal approximation. Then, this polygonal approximation can be transformed into the arc length s and turning angle &thgr; coordinates as used in two recent papers [1,2]. For simplicity, we call this transformation, as s-&thgr; transformation. An important property of this transformation is that s-&thgr;(More)
During the past several years, parallel computation, parallel processing as well as parallel algorithms have attracted growing attention as promising avenues of decreasing computation time at the same time increasing CPU utilization. In this paper, computer/radar joint scheduling using a parallel computer is investigated. The Ballistic Missile Defense (BMD)(More)
Two-dimensional programmed grammars was introduced in [1]. In this paper, programmed grammars with multi-production core are defined. Various properties of this type of grammar are studied and illustrated by examples. In addition, the time and space complexity analyses are also investigated with illustrative examples. Applications to the generation of(More)
Images, like snowflakes, come in virtually infinite variety. In this abstract, we will focus our attention on image edge detection and image grammars. There are three steps in the syntactic method for image recognition [1]:<list><item>Decompose the images into subimages or primitives </item><item>Describe the structural relationship among the primitives by(More)