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2096 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 16, NO. 8, AUGUST 2007 Active Contour External Force Using Vector
 

Summary: 2096 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 16, NO. 8, AUGUST 2007
Active Contour External Force Using Vector
Field Convolution for Image Segmentation
Bing Li, Student Member, IEEE, and Scott T. Acton, Senior Member, IEEE
Abstract--Snakes, or active contours, have been widely used in
image processing applications. Typical roadblocks to consistent
performance include limited capture range, noise sensitivity,
and poor convergence to concavities. This paper proposes a new
external force for active contours, called vector field convolution
(VFC), to address these problems. VFC is calculated by convolving
the edge map generated from the image with the user-defined
vector field kernel. We propose two structures for the magnitude
function of the vector field kernel, and we provide an analytical
method to estimate the parameter of the magnitude function.
Mixed VFC is introduced to alleviate the possible leakage problem
caused by choosing inappropriate parameters. We also demon-
strate that the standard external force and the gradient vector
flow (GVF) external force are special cases of VFC in certain
scenarios. Examples and comparisons with GVF are presented in
this paper to show the advantages of this innovation, including

  

Source: Acton, Scott - Department of Electrical and Computer Engineering, University of Virginia

 

Collections: Computer Technologies and Information Sciences