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 Expert  728448

Expert in Human Visual Perception, Visibility Assessment, Visual Human Factors

Available for your Consulting and Expert Witness Needs

United Kingdom
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert has worked in the field of visual perception for over 35 years. His primary interest is on how vision operates in the natural world. This includes consideration of how visual scenes are judged to be different or similar to each other; how experts detect abnormalities in visual human behaviour, e.g. in CCTV surveillance situations; the visibility of signals and signs, particularly in the rail industry; the design of camouflage; image fusion. Expert has been a consultant for the UK rail and defence industry. He is Managing Editor of the journals "Perception" and "i-Perception". He is an expert in designing studies using psychophysical techniques, particularly to study visual performance in complex tasks. He has published over 80 papers, and has co-authored one book on vision and perception.



color vision




vision science


visual psychophysics


visual perception

Show Secondary and Basic Areas of Expertise

Year   Degree   Subject   Institution  
1974   B.Sc.   Physics   University of Manchester  
1978   Ph.D.   Visual Science   City University London  

Work History:
Years   Employer   Department   Title   Responsibilities

2002 to


(Undisclosed University)


Experimental Psychology


Professor of Psychology


He holds a full Professorship in the Department of Experimental Psychology, and is on the Management Group of the Bristol Vision Institute. He oversees a programme of research funded primarily by UK Research Councils and industry.

Career Accomplishments:

Secretary of Applied Vision Association,

Member of Experimental Psychology Society

Professional Appointments

Managing Editor, "Perception" and "i-Perception" journals;

Editorial Board, ACM Transactions on Applied Perception

Publications and Patents Summary

Has over 75 publications in peer-reviewed journals, one patent, and has co-authored a recent book on visual perception.

Selected Publications and Publishers  
 - Philosophical Transactions of the Royal Society of London  
 - Nature  
 - Journal of the Optical Society of America A  
 - Journal of Vision  
 - Spatial Vision  

Consulting Services:
Selected Consulting Examples:
  • Designing a quantitative method of assessing signal and sign visibility for the UK Rail Industry
  • Studying the ability of CCTV operators to assess information on many screens simultaneously
  • Assessing the reliability of witness claims during a violent episode
  • Assessing the effectiveness of camouflage on military vehicles
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
Has appeared as expert witness in UK Magistrates' Court in a case in which visual perception was difficult.
Recent Litigation Client Requests:
  • Color vision expert for consulting on colour vision deficiency as it relates to clients job.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Language Skills:
Foreign Language   Description
English   He is a native speaker of English
German   He is a fluent speaker of German
French   He is a fluent speaker of French
Polish   He is a fluent speaker of Polish

Additional Skills and Services:

Teaches visual perception

Other Skills and Services

Is an expert on issues surrounding the visibility of signs and signals, and on assessment of abnormal behaviours


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