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김이한,김성대 대한전자공학회 1995 전자공학회논문지-B Vol.b32 No.6
The techniques for the estimation of motion vector from the image sequence assume implicitly that the intensity of image is constant through the time. But this assumption can be distored by such causes as the added noises and the sub-pel motion following the sampling, and the errors can be generated on the motion estimation by the change of intensity. In this paper, we analyzed theoretically the effect of the change of intensity by the noise on the motion estimation with the white Gaussian noise. We know a fact that the signal may be fluctuated to reduce the effect of the noise and so the sampling rate have to make down. Also we confirmed the theoretically analysis through the experiments which investigated the relation between the noises and the sampling rates.
결정 다이아그램에 의한 다치조합논리시스템 구성에 관한 연구
김이한,김성대 대한전자공학회 1995 전자공학회논문지-B Vol.b32 No.6
This paper presents a method of constructing the multiple-valued combinational logic systems(MVCLS) by decision diagram. The switching function truth table of MVCLS is transformed into canonical normal form of sum-of-products(SOP) with literals at first. Next, the canonical normal form of SOP is transfered into multiple-valued logic decision diagram(MVLDD). The selecting of variable ordering is very important in this stage. The MVLDDs are quite different from each other according to the variable ordering. Sometimes the inadequate variable ordering produces a very large size of MVLDD means the large size of circuit implementation. An algorithm for generating the proper variable ordering produce minimal MVLDD and an example shows the verity of the algorithm. The circuits are realized with T-gate acceording to the minimal MVLDD.
김이한 진주산업대학교 1972 論文集 Vol.9 No.-
Adsorption is very remarkable phenomenon and so very good result was gained, by artificially manufacturing absorption materials as follows: 1. To slice about 10 mesh of wood-charcoal is good. 2. After permeating vapor enough, quick-beating and cooling slowly is good. 3. The suitable temperature of heating is 900℃-1000℃. 4. The suitable time of heating is 1 hour-2 hours.