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Query by humming (QBH) is a content-based system to identify which song a person sang. In this paper, we proposed a note-based QBH system which apply the hidden Markov model and dynamic programming to find the most possible song. Also, we proposed several techniques to improve the QBH system performance. First, we propose a modified method for onset detection. The frequency information is also used...
A novel boundary determination algorithm (BDA) for robust lane detection is presented. The algorithm can track a complete lane boundary based on partial lane edge points provided there exist sufficient orientation similarity there between. BDA mainly comprises two parts: (a) utilizing an edge detection method to extract orientations and coordinates of edge points; (b) repeatedly applying two circular...
This paper presents a novel approach called PEPA (Perceptual Edges Preservation Algorithm) which enables computing machines to mimic the human vision capability in perceiving meaningful objects in an input scene, characterized in that the preserved edges are conformal to human vision perception. The approach mainly comprises three stages: (1) applying linear and nonlinear filtering to mimic the capability...
Why edge feature is considered far most important for establishing a perceptual contour in human vision system is based on two dependent viewpoints (a) robust ability to define/extract edges from heterogeneous objects or textures and (b) a subsequent step to decide which edges are significant enough to be preserved for object perception, namely the perceptual edges. In this paper, we present a method...
Two types of 45deg-chamfers are designed to enhance the light transmission of a 90deg-bent hollow waveguide formed by omni-directional reflector (HW-ODR). The simulation shows that the proposed designs have increased the transmission efficiency, compared with that of an abrupt L-shape HW-ODR.
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