Medial Object Technology

MAT and MO

medial_axis_transformation-resized-142  The Medial Axis Transformation (MAT) was the subject of intensive research at Queen’s University Belfast in the 1980’s and was then developed by TranscenData Europe Ltd from 2004 onwards in the form of Medial Object (MO) computation. In recent years the Medial Object has become a key geometric reasoning technology in several EU and TSB supported projects, including VIVACE, CRESCENDO, SILOET, ANSD, SimOD and GHandI. Applications of TranscenData’s MO have also been explored in several academic research projects. We are aware that there are also several other groups working on MAT methods and applications.

Medial Object Workshop

We organised a workshop in Cambridge, England, 9-10 October 2014, on the Medial Object and the Medial Axis Transformation (MAT) and their applications.

The aim of this workshop was to bring together individuals and groups who are active or interested in the computation and applications of the Medial Object or the Medial Axis Transformation. To encourage a full exchange of ideas, it was an informal event with no published proceedings, with attendees able to present last minute results. Most presenters have made their presentations available and links to them are provided below.  Attendees were limited to 50, to encourage discussion.

Presented Papers

Most papers are provided below via the links in the titles. Those of Amenta and Ali were, at the time of the workshop, material under preparation for journal publication so are not provided. The Woodhouse talk was an informal, after dinner entertainment talk and is also not available.

Welcome and Introduction

Dr Geoffrey Butlin

TranscenData Europe Ltd

Problems of MO computation I

Dr Malcolm Sabin

Numerical Geometry Ltd

Problems of MO computation II

Dr Tom Cashman

TranscenData Europe Ltd

Delaunay computation of medial axis – survey 2D mesh computation using medial axis

Professor Nina Amenta

University of California at Davis

Scalable and robust computation of medial axes and surfaces in 2D and 3D: State-of-the-art

Prof. dr. Alexandru C. Telea

University of Groningen

3D medial object computation using a domain Delaunay triangulation

Henry Bucklow

TranscenData Europe Ltd

LayTracks3D: Hex Mesh Generation using Medial Axis Transform

Dr William Roshan Quadros


Toward exascale parallel mesh generation with the help of
medial axis based domain decomposition

Professor Nikos Chrisochoides

Old Dominion University

Making a Medial Object usable in an Engineering Simulation context

Joe Walsh


Using the medial axis to locate mesh singularities

Dr Harry Fogg

Queen’s University Belfast

Mesh Generation for Aircraft Engines based on the Medial Axis

Dr Florian Buchegger

Johannes Kepler University

Need for hex meshing with MO

Alex Sansom


Review hex meshing with MO

Dr Malcolm Sabin

Numerical Geometry Ltd

AFTER DINNER TALK: When does a structure become an instrument

Professor Jim Woodhouse

Cambridge University Engineering Department

Computing Stable and Compact Representation of Medial Axis

Professor Wenping Wang

University of Hong Kong

From Medial Axes to Shock Scaffolds

Professor Frederic Fol Leymarie

Goldsmiths University of London

Medial Object and Rational Offsets

Dr Jiří Kosinka

Cambridge University Computer Laboratory

Medial Object computation

Professor M. Ramanathan

IIT Madras

Computing medial axis and curve skeleton with Voronoi diagrams

Professor Tamal Dey

The Ohio State University

Additive Manufacturing – a role for the MO

Dr Ted Blacker


Using the Medial Object to facilitate automated toolpath generation for Wire and Arc Additive Manufacture

Dr Helen Lockett

Cranfield University

Medial Axis Based Mesh Generation Applied to Turbomachinery Flows

Zaib Ali

Cambridge University Engineering Department

Need for, and progress with CFD blocking

Dr Scott Shaw


& Robin Fairey