Learn R Programming

dpmixsim (version 0.0-9)

Dirichlet Process Mixture Model Simulation for Clustering and Image Segmentation

Description

The 'dpmixsim' package implements a Dirichlet Process Mixture (DPM) model for clustering and image segmentation. The DPM model is a Bayesian nonparametric methodology that relies on MCMC simulations for exploring mixture models with an unknown number of components. The code implements conjugate models with normal structure (conjugate normal-normal DP mixture model). The package's applications are oriented towards the classification of magnetic resonance images according to tissue type or region of interest.

Copy Link

Version

Install

install.packages('dpmixsim')

Monthly Downloads

34

Version

0.0-9

License

GPL (>= 2)

Maintainer

Adelino da Silva

Last Published

July 11th, 2018

Functions in dpmixsim (0.0-9)

dpmixsim

Dirichlet Process mixture model for clustering and image segmentation
prescale

Data preparation
readsliceimg

Read MRI slice data
postdataseg

Data segmentation
postdpmixciz

Summary statistics and cluster estimation
postimgclgrp

Segment image with the estimated number of components
postimgcomps

Display cluster components
postkcluster

Segmentation with a fixed number of clusters
premask

Data preparation
galaxy

Galaxy velocities
t1_pn3_rf0_slice_0092_mask.Rd

Mask file for MRI slice
t1_pn3_rf0_slice_0092.Rd

Example of a pre-processed MRI slice from the BrainWeb database