A width-invariant property of curves based on wavelet transform with a novel wavelet function.
This paper is an improvement on the characterization of edges. Using a novel wavelet function, it is proven that the maximum moduli of the wavelet transform (MMWT) of a curve produces two new symmetrical curves on both sides of the original with the same direction. The distance between the two curves is shown to be independent of the width d of the original curve if the scale s of the wavelet transform satisfies s/spl ges/d. This property provides a novel method of obtaining the skeletons of the curves in an image.
Yang
Lihua
L
Dept. of Sci. Comput. & Comput. Application, Zhongshan Univ., Guangzhou, China.
Suen
C Y
CY
Tang
Yuan Yan
YY