TY - GEN
T1 - Non-parametric estimation of mixture model order
AU - Corona, Enrique
AU - Nutter, Brian
AU - Mitra, Sunanda
PY - 2008
Y1 - 2008
N2 - Mixture models are among the most popular and effective techniques for image segmentation. While Gaussian Mixture Models (GMM) are a reasonable choice, the number of components is not easy to determine. A non-parametric technique, based on the transformation and analysis of the D(R) (distortion-rate) curve is proposed for model order identification purposes. This curve is estimated via the popular K-means clustering algorithm. To achieve repeatability and efficiency, various centroid initialization and image down sampling methods are proposed and tested. This technique also provides good starting points for inferring the GMM parameters via the expectation-maximization (EM) algorithm, which effectively reduces the segmentation time and the chances of getting trapped in local optima.
AB - Mixture models are among the most popular and effective techniques for image segmentation. While Gaussian Mixture Models (GMM) are a reasonable choice, the number of components is not easy to determine. A non-parametric technique, based on the transformation and analysis of the D(R) (distortion-rate) curve is proposed for model order identification purposes. This curve is estimated via the popular K-means clustering algorithm. To achieve repeatability and efficiency, various centroid initialization and image down sampling methods are proposed and tested. This technique also provides good starting points for inferring the GMM parameters via the expectation-maximization (EM) algorithm, which effectively reduces the segmentation time and the chances of getting trapped in local optima.
UR - http://www.scopus.com/inward/record.url?scp=62349104541&partnerID=8YFLogxK
U2 - 10.1109/SSIAI.2008.4512306
DO - 10.1109/SSIAI.2008.4512306
M3 - Conference contribution
AN - SCOPUS:62349104541
SN - 9781424422975
T3 - Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation
SP - 145
EP - 148
BT - 2008 IEEE Southwest Symposium on Image Analysis and Interpretation, SSIAI 2008 - Proceedings
T2 - 2008 IEEE Southwest Symposium on Image Analysis and Interpretation, SSIAI 2008
Y2 - 24 March 2008 through 26 March 2008
ER -