Home

Dr. Mathew Legg

Head of School
Technology
New Zeland Skills and Education College
Auckland, New Zealand

Background

My research relates to acoustic/ultrasonic imaging, Non-Destructive Testing (NDT) using ultrasonic bulk and guided waves, remote sensing, sensor development, signal processing, 3D computer vision, agricultural sensor development, and indoor localisation.

 

  • More than 15 years experience in software/hardware development.

 

  • Experienced researcher in the areas of development of sensor and measurement systems, hardware (PCB design, CAD, 3D printing, fabrication, etc), software programming, digital signal processing, data analysis, mathematical modelling, lab/field trials, etc.

 

  • About 10 years experience undertaking and managing projects related to development of sensors and measurement systems, acoustics, ultrasonics, 3D computer vision, etc.

 

  • Five of my project have been large (Million dollar or more) collaborative projects related to the agricultural, forestry, marine/shipping, power transmission, aeronautical industries.

 

  • Experienced in engaging with both internal engineers and external stakeholders.

 

  • Over 8 years experience leading the work/research of engineers. This includes being a group leader, project leader and overall project coordinator, Deputy Postgraduate Lead, coordinator of university courses including project based learning courses, and supervisor of students who have successfully completed (4 PhD students [2 as main supervisor], 10 Masters level students, more than 50 honours level students, etc).

Positions

2017-Present

Senior Lecturer & Deputy Postgraduate Lead for SFAT

Mechanical and Electrical Engineering
Massey University, Auckland, New Zealand

2014-2016

Post-Doctoral Research Fellow

Physics Department
The University of Auckland, Auckland, New Zealand

2013-2014

Research Fellow,

Brunel Innovation Centre
Brunel University, Cambridge, UK

2012

Professional Teaching Fellow

Physics Department
University of Auckland

Memberships and Professional Service

IEEE Senior Member

The content goes here...

2019-Present

Committee Member of the Acoustic Society of New Zealand

The content goes here...

2022-Present

Chair of the IEEE NZ Joint Chapter in Signal Processing and Information Theory.

The content goes here...

2022-Present

Board member of the IEEE NZ North Section

The content goes here...

2020-Present

On the board of Massey’s Teaching Space Technologies Project

The content goes here...

Educations

2012

Doctor of Philosophy

in Physics
University of Auckland

2007

Master of Science (First Class Honours)

in Physics
University of Auckland

2004

Postgraduate Diploma in Science

in Physics
University of Auckland

2003

Bachelor of Science

in Physics and Geophysics
University of Auckland

Scholarships

IEEE Senior Member

The content goes here...

2019-Present

Committee Member of the Acoustic Society of New Zealand

The content goes here...

2008-2011

University of Auckland Doctoral Scholarship.

The content goes here...

2006

Sagar Geophysics Prize, Physics Department

The content goes here...

2003

Faculty of Science Fees Bursary

The content goes here...

View more
2002

Senior Prize in Physics, Faculty of Science

The content goes here...

Selected Publications

Click the link below for a full list of publications.

Patents

item thumbnail

Systems, Apparatus and Methods for Vegetation Measurement

No.753949, Nationality: New Zealand, Applicant: Gallagher Group Limited.
Bradley, S and Legg, M
BibTeX
item thumbnail

Vegetation Measurement Apparatus, Systems, and Methods

No.2019201425, Nationality: Australia, Applicant: Gallagher Group Limited
Bradley, S and Legg, M
Publisher's website BibTeX

Journal Articles

item thumbnail

Visible Light Positioning-Based Robot Localization and Navigation

Electronics, 13(2), 2024
Chew, Moi-Tin and Alam, Fakhrul and Noble, Frazer K. and Legg, Mathew and Gupta, Gourab Sen
Publisher's website BibTeX
item thumbnail

Grape Maturity Estimation Using Time-of-Flight and LiDAR Depth Cameras

Sensors, 24(16): 5109,2024
Legg, Mathew and Parr, Baden and Pascual, Genevieve and Alam, Fakhrul
Publisher's website BibTeX
item thumbnail

Estimation of the Rod Velocity in Wood using Multi-frequency Guided Wave Measurements

Applied Acoustics, 202: 109108, 2023
Bakar, Adli Hasan Abu and Legg, Mathew and Konings, Daniel and Alam, Fakhrul
Publisher's website BibTeX
item thumbnail

The effects of dispersion on time-of-flight acoustic velocity measurements in a wooden rod

Ultrasonics, 129, pp.106912
Bakar, A. and Legg, M. and Konings, D. and Alam, F.
Publisher's website BibTeX
item thumbnail

Grape yield estimation with a smartphone’s colour and depth cameras using machine learning and computer vision techniques

Computers and Electronics in Agriculture, 213: 108174
Parr, Baden and Legg, Mathew and Alam, Fakhrul
Publisher's website BibTeX
item thumbnail

Ultrasonic guided wave measurement in a wooden rod using shear transducer arrays

Ultrasonics, 119
Bakar, A. and Legg, M. and Konings, D. and Alam, F.
Publisher's website BibTeX
item thumbnail

Analysis of Depth Cameras for Proximal Sensing of Grapes

Sensors, 22(4179): 1424-8220, 2022
Parr, Baden and Legg, Mathew and Alam, Fakhrul
Publisher's website BibTeX
item thumbnail

Machine Learning Techniques for Device-Free Localization Using Low-Resolution Thermopiles

IEEE Internet of Things Journal, 2022
Faulkner, N. and Konings, D. and Alam, F. textbfLegg, M. and Demidenko, S.
Publisher's website BibTeX
item thumbnail

Occluded Grape Cluster Detection and Vine Canopy Visualisation Using an Ultrasonic Phased Array

Sensors, 21(6), 2021
Parr, Baden and Legg, Mathew and Bradley, Stuart and Alam, Fakhrul
Publisher's website BibTeX
item thumbnail

Accurate ultrasound indoor localization using spring-relaxation technique

Electronics, 10:11
Chew, MT and Alam, F. and Legg, M. and Sen Gupta, G.
Publisher's website BibTeX
item thumbnail

Device-free localization using privacy-preserving infrared signatures acquired from thermopiles and machine learning

IEEE Access, 9:
Faulkner, N. and Alam, F. and Legg, M. and Demidenko, S.
Publisher's website BibTeX
item thumbnail

Autonomous fingerprinting and large experimental data set for visible light positioning

Sensors, 21
Glass, T. and Alam, F. and Legg, M. and Noble, F.
Publisher's website BibTeX
item thumbnail

Watchers on the Wall: Passive Visible Light-Based Positioning and Tracking with Embedded Light-Sensors on the Wall

IEEE Transactions on Instrumentation and Measurement, 69(5): 2522-2532, 2020
Faulkner, N and Alam, F and Legg, M and Demidenko, S
Publisher's website BibTeX
item thumbnail

CapLoc: Capacitive Sensing Floor for Device-Free Localization and Fall Detection

IEEE Access, 8: 187353-187364, 2020
Faulkner, N. and Parr, B. and Alam, F. and Legg, M. and Demidenko, S.
Publisher's website BibTeX
item thumbnail

Accurate Visible Light Positioning using Multiple Photodiode Receiver and Machine Learning

IEEE Transactions on Instrumentation and Measurement, 70: 1-12, 2020
Bakar, A and Glass, T. and Tee, H. and Alam, F. and Legg, M.
Publisher's website BibTeX
item thumbnail

Ultrasonic Arrays for Remote Sensing of Pasture Biomass

Remote Sensing, 12(1): 111, 2019
Legg, M and Bradley, S
Publisher's website BibTeX
item thumbnail

Ultrasonic Proximal Sensing of Pasture Biomass

Remote Sensing, 11(20): 2459, 2019
Legg, M and Bradley, S
Publisher's website BibTeX
item thumbnail

Indoor Visible Light Positioning using Spring-Relaxation Technique in Real-World Setting

IEEE Access, 7: 91347-91359, 2019
Alam, F and Faulkner, N and Legg, M and Demidenko, S
Publisher's website BibTeX
item thumbnail

An ultrasonic guided wave approach for the inspection of overhead transmission line cables

Applied Acoustics, 122: 23-34, 2017
Yücel, Mehmet K and Legg, Mathew and Kappatos, Vassilios and Gan, Tat-Hean
Publisher's website BibTeX
item thumbnail

Measurement of Stiffness of Standing Trees and Felled Logs using Acoustics: A Review

Journal of the Acoustic Society of America, 139(1), 2016
Legg, M and Bradley S
Publisher's website BibTeX
item thumbnail

Acoustic methods for biofouling control: A review

Ocean Engineering, 103: 237-247, 2015
Legg, M and Yücel, MK and Garciade de Carellan, I and Kappatos, V and Selcuk, C and Gan, TH
Publisher's website BibTeX
item thumbnail

Increased range of ultrasonic guided wave testing of overhead transmission line cables using dispersion compensation

Ultrasonics, 2015
Legg, M and Yücel, MK and Kappatos, V and Selcuk, C and Gan, TH
Publisher's website BibTeX
item thumbnail

Coded Waveform Excitation for High Resolution Ultrasonic Guided Wave Response

Industrial Informatics, IEEE Transactions on, 12(1): 257-266, 2015
Yücel, MK and Fateri, S and Legg, M and Wilkinson, A and Kappatos, V and Selcuk, C and Gan, TH
Publisher's website BibTeX
item thumbnail

Automatic 3D scanning surface generation for microphone array acoustic imaging

Applied Acoustics, 76: 230-237, 2014
Legg, M and Bradley, S
Publisher's website BibTeX
item thumbnail

A combined microphone and camera calibration technique with application to acoustic imaging

Image Processing, IEEE Transactions on, 22(10): 4028-4039, 2013
Legg, M and Bradley, S
Publisher's website BibTeX

PhD and MSc Thesis

item thumbnail

Microphone phased array 3D beamforming and deconvolution

PhD Thesis, University of Auckland, New Zealand, 2012
Legg, M.
Publisher's website BibTeX
item thumbnail

Multi-frequency clutter-rejection algorithms for acoustic radars

MSc Thesis, University of Auckland, New Zealand, 2007
Legg, M
Publisher's website BibTeX