Design of FIR bilevel Laplacian-of-Gaussian filter
نویسندگان
چکیده
The Laplacian-of-Gaussian (LoG) (lter is an optimal edge detector, but it is computationally ine3cient. In this paper, we propose the bilevel Laplacian-of-Gaussian (BLoG) (lter to approximate the LoG (lter. This approximation is formulated as an optimization problem and solved by the gradient descent algorithm. Only two multiplications per pixel are required in convolving with the BLoG (lter. The computation is fast and it produces satisfactory results. The applications of 1D BLoG (lter to corner detection and 2D BLoG (lter to edge detection are also presented. ? 2002 Elsevier Science B.V. All rights reserved.
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عنوان ژورنال:
- Signal Processing
دوره 82 شماره
صفحات -
تاریخ انتشار 2002