Paper Info
Title
Segmentation of medical images using adaptive region growing
Abstract
Interaction increases flexibility of segmentation but it leads to undesirable behavior of an algorithm if knowledge being requested is inappropriate. In region growing, this is the case for defining the homogeneity criterion, as its specification depends also on image formation properties that are not known to the user. We developed a region growing algorithm that learns its homogeneity criterion automatically from characteristics of the region to be segmented. The method is based on a model that describes homogeneity and simple shape properties of the region. Parameters of the homogeneity criterion are estimated from sample locations in the region. These locations are selected sequentially in a random walk starting at the seed point, and the homogeneity criterion is updated continuously. This approach was extended to a fully automatic and complete segmentation method by using the pixels with the smallest gradient length in the not yet segmented image region as a seed point. The methods were tested for segmentation on test images and of structures in CT and MR images. We found the methods to work reliable if the model assumption on homogeneity and region characteristics are true. Furthermore, the model is simple but robust, thus allowing for a certain degree of deviation from model constraints and still delivering the expected segmentation result.
Year
DOI
Venue
2001
10.1117/12.431013
Proceedings of SPIE
Keywords
Field
DocType
segmentation,region growing,adaptive methods
Computer vision,Homogeneity (statistics),Scale-space segmentation,Pattern recognition,Segmentation,Segmentation-based object categorization,Image formation,Image segmentation,Region growing,Artificial intelligence,Geography,Minimum spanning tree-based segmentation
Conference
Volume
ISSN
Citations 
4322
0277-786X
56
PageRank 
References 
Authors
3.57
11
2
Name
Order
Citations
PageRank
Regina Pohle18512.93
Klaus D. Toennies28812.36