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고현민,정준익,최성구,노도환 전북대학교 공업기술연구소 1997 工學硏究 Vol.28 No.-
In this paper, we present the algorithm for recognizing road sign and traffic signal from VTR road image. First, the recognition of road sign can be detected using boundary point estimation from some detect-lines within the region between the left and the right lane deduced by preprocessing. For this algorithm, index matrix method is used to determine what sign is. To get the index matrix, boundary points have processed at the front stage such as the estimation of the distribution of vertical-points and middle point. Then, the recognition of traffic signal is performed by using the window minified by several detect-lines which position may be expected. For this algorithm, line profile concept is adopted. Above all, the merit of this algorithm is the use of one camera system, so-called monocular vision system differed from other system such as stereo vision system, fusion system. This leads to a low cost and compact system.
고현민,노도환 전북대학교 공업기술연구소 1998 工學硏究 Vol.30 No.-
In this paper, we propose the non-contact method to measure rotational speed vector using spatial filtering method. The rotational speed ω is known by the frequency of output sinusoidal signal direct proportional to that and the rotational direction is given by the phase delay from the weighting function design of spatial filter.