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We address the problem of 3D model based vehicle localization in calibrated traffic scenes. A wire-frame vehicle model is set up as prior information and an efficient local gradient based method is proposed to evaluate the fitness between the projection of 3D model and image data, which illustrates smooth optimization surface and more conspicuous peak with low computational cost. Gradient decent is...
Most outdoor visual surveillance scenes involve objects of interest moving on the ground plane. However, perspective distortion introduces many difficulties to various applications like object classification and activity recognition. In this paper, we propose a robust automated method for both affine and metric rectification of the ground plane based on appearance and motion of vehicles in traffic...
A new tool, Dot Counting Dimension (DCD) for measuring the fractal dimension or complexity of 1-dimension random vibration signal or time series data is put forward in this paper. The definition and algorithm of DCD are given out. DCD of six pulse segments of microseismic records are calculated, and linear result of DCD is achieved. The algorithm of DCD may be applied broadly in processing 1-dimension...
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