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컬러 동시발생 히스토그램의 피라미드 매칭에 의한 물체 인식
방희범(H. B. Bang),이상훈(S. H. Lee),서일홍(I. H. Suh),박명관(M. K. Park),김성훈(S. H. Kim),홍석규(S. K. Hong) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
Methods of Object recognition from camera image are to compare features of color, edge or pattern with model in a general way. SIFT (scale - invariant feature transform) has good performance but that has high complexity of computation. Using simple color histogram has low complexity. but low performance. In this paper we represent a model as a color cooccurrence histogram, and we improve performance using pyramid matching. The color cooccurrence histogram keeps track of the number of pairs of certain colored pixels that occur at certain separation distances in image space. The color cooccurrence histogram adds geometric information to the normal color histogram. We suggest object recognition by pyramid matching of color cooccurrence histogram.
액체 저장 용기 내에서의 자성유체 슬로싱 현상에 관한 해석적 연구
배형섭(H. S. Bae),김상열(S. Y. Kim),박명관(M. K. Park) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
In this paper, we analyzed numerically the dynamic behavior of magnetic fluid in a storage container from the magnetic field by a permanent magnet. Magnetic fluid react on magnetic field against the normal fluid. In other words, magnetic fluid sloshing problem has the electromagnetism and fluid mechanics. First, we analyzed the Maxwell equation for the permanent magnet and then concluded the governing equations for the magnetic fluid sloshing using the equation of Navier-Stokes and motion of storage container. And, we simulated the dynamic behavior of magnetic fluid and storage motion using the ALE(Arbitrary Lagrangian-Eylerian) method. And to conclude, we illustrated the relation between the motion of storage container and dynamic behavior of magnetic fluid.