Graphic STI
logo EPFL
text EPFL
english only
Biomedical Imaging Group
Student Project: Bhavani Sambaturu
BIG > Teaching > Student Project > Bhavani Sambaturu
CONTENTS

Home page

News & Events

Seminars

People

Research

Publications

Tutorials & Reviews

Recent Talks

Demos

Download Algorithms

Jobs and Trainees

Teaching

Student Projects

Intranet

Active contours for segmentation of multilayered biological structures

Bhavani SambaturuSemester Project
Section, EPFLJune 2009

 

Abstract

In this semester project, an ImageJ plugin was developed based on open ended parametric snakes formulated using B-splines. An initial contour was specified by the user with the desired number of nodes. Interpolation using B-splines was used with which the contour was generated given the nodes. The curve was optimized to fit into the desired contour in the image using optimization for which the cost function was defined in terms of the energy of the snake. Energies based on the gradient and laplacian of the image were used. In addition, a constraint energy was also introduced based on the y coordinates of the initial and the final nodes of the curve.

image

Fig1: When plugin is invoked, user can enter the number of nodes and the "Lambda" for the constraint energy

© 2009 EPFL • webmaster.big@epfl.ch • 28.08.2009