On the Convergence of Planar Curves Under Smoothing
On the Convergence of Planar Curves Under Smoothing
复制标题
关于平滑下平面曲线的收敛性
DOI:
10.1109/tip.2010.2046807
复制
发表时间:
2010-08
影响因子:
10.6
通讯作者:
Zhong, Baojiang
中科院分区:
文献类型:
--
作者:
Ma, Kai-Kuang;Zhong, Baojiang
Curve smoothing has two important applications in computer vision and image processing: 1) the curvature scale-space (CSS) technique for shape analysis, and 2) the Gaussian filter for noise suppression. In this paper, we study how planar curves converge as they are smoothed with increasing scales. First, two types of convergence behavior are clarified. The coined term shrinkage refers to the reduction of arc-length of a smoothed planar curve, which describes the convergence of the curve latitudinally; and another coined term collapse refers to the movement of each point to its limiting position, which describes the convergence of the curve longitudinally. A systematic study on the shrinkage and collapse of three categories of curve models is then presented. The corner models helps to reveal how the local structures of planar curves collapse and what the smoothed curves may converge to. The sawtooth models allows us to gain insights regarding how noise is suppressed from noisy planar curves by the Gaussian filter. Our investigation on the closed curves shows that each curve collapses to a point at its center of mass. However, different curves may yield different limiting shapes at the infinity scale. Finally, based upon the derived results the performance of the CSS technique in corner detection and shape representation is analyzed, and a fast implementation method of the Gaussian filter for noise suppression is proposed.
登录
查看更多内容
影响因子:
2.5
作者:
M. Gage;R. Hamilton
通讯作者:
M. Gage;R. Hamilton
影响因子:
19.5
作者:
Arjan Kuijper;L. Florack
通讯作者:
Arjan Kuijper;L. Florack
DOI:
10.1023/b:visi.0000029664.99615.94
发表时间:
2004-11-01
影响因子:
19.5
作者:
Lowe, DG
通讯作者:
Lowe, DG
DOI:
10.1007/978-94-017-0343-7
发表时间:
2011-01
期刊:
--
影响因子:
--
作者:
F. Mokhtarian;M. Bober
通讯作者:
F. Mokhtarian;M. Bober
DOI:
10.1016/0031-3203(95)00046-3
发表时间:
1995-11
期刊:
Pattern Recognit.
影响因子:
--
作者:
B. Ray;K. Ray
通讯作者:
B. Ray;K. Ray