Minimum Description Length Shape and Appearance Models

نویسنده

  • Hans Henrik Thodberg
چکیده

The Minimum Description Length (MDL) approach to shape modelling is reviewed. It solves the point correspondence problem of selecting points on shapes defined as curves so that the points correspond across a data set. An efficient numerical implementation is presented and made available as open source Matlab code. The problems with the early MDL approaches are discussed. Finally the MDL approach is extended to an MDL Appearance Model, which is proposed as a means to perform unsupervised image segmentation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Statistical Bone Shape Analysis for Image Free Surgery

Statistical shape analysis techniques employed in the medical imaging community, such as Active Shape Models or Active Appearance Models, rely on Principal Component Analysis (PCA) to decompose shape variability into a reduced set of interpretable components. Our model uses point distribution models (PDM) for the representation of shapes. The point association is initialized using shape-based s...

متن کامل

Add Cartesian Differential Invariants to Minimum Description Length Shape Models

The minimum description length approach can automatic solve the point correspondence problem and give the better statistical shape models than those built by hand or equally spaced way. The current mdl approaches build the models only based on the segmented shapes without considering the local image structure and may place the markers at wrong places. This paper adds Cartesian differential inva...

متن کامل

Active Shape Models for a Fully Automated 3D Segmentation of the Liver - An Evaluation on Clinical Data

This paper presents an evaluation of the performance of a three-dimensional Active Shape Model (ASM) to segment the liver in 48 clinical CT scans. The employed shape model is built from 32 samples using an optimization approach based on the minimum description length (MDL). Three different gray-value appearance models (plain intensity, gradient and normalized gradient profiles) are created to g...

متن کامل

Registration and Analysis of Myocardial Perfusion Magnetic Resonance Images

This thesis presents the registration and analysis of myocardial perfusion magnetic resonance images. Registration is carried out by a method based on Active Appearance Models (AAM). Extensions to the basic AAM include clustering of texture vectors in temporal dimension in addition to slice-coupled modelling. A training set for the AAM is generated semi-automatically. This involves implementati...

متن کامل

A Clique of Active Appearance Models by Minimum Description Length

Autonomous model building is a crucial trend in model based methods like AAMs. This paper introduces an approach that deals with non-linearities by detecting distinct sub-parts in the data. Sub-models each representing an individual sub-part are derived from a minimum description length criterion. Thereby the resulting clique of models is more compact and obtains a better generalization behavio...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Information processing in medical imaging : proceedings of the ... conference

دوره 18  شماره 

صفحات  -

تاریخ انتشار 2003