This is the personal page of David Ryan. I am a senior computer vision developer at Sentient Vision Systems. I completed my PhD in computer vision at Queensland University of Technology. I’ve worked on image processing and video decoding algorithms at Blackmagic Design.
You can contact me on LinkedIn.
Curriculum Vitae
PhD Thesis
Crowd monitoring using computer vision
David Ryan
Queensland University of Technology (QUT), 2014
[PDF (17MB)] [QUT ePrints]
Summary: Novel computer vision techniques have been developed for automatic monitoring of crowded environments such as airports, railway stations and shopping malls. Using video feeds from multiple cameras, the techniques enable crowd counting, crowd flow monitoring, queue monitoring and abnormal event detection. The outcome of the research is useful for surveillance applications and for obtaining operational metrics to improve business efficiency.
Datasets
SAIVT-QUT Crowd Counting Database
Demos
Publications
Journal Articles
An Evaluation of Crowd Counting Methods, Features and Regression Models
David Ryan, Simon Denman, Sridha Sridharan and Clinton Fookes
Computer Vision and Image Understanding, Elsevier [In press]
[Paper] [Elsevier]
Scene Invariant Multi Camera Crowd Counting
David Ryan, Simon Denman, Clinton Fookes and Sridha Sridharan
Pattern Recognition Letters, Elsevier, 2013
[Paper] [Datasets] [Elsevier]
Detecting Anomalous Events at Railway Level Crossings
Hajananth Nallaivarothayan, David Ryan, Simon Denman, Sridha Sridharan, Clinton Fookes and Andry Rakotonirainy
Journal of Rail and Rapid Transit, 2013.
[Paper] [Sage]
Book Chapters
Scene Invariant Crowd Counting and Crowd Occupancy Analysis
David Ryan, Simon Denman, Sridha Sridharan and Clinton Fookes
Video Analytics for Business Intelligence, Springer-Verlag, 2012
[Paper] [Datasets] [Springer]
Conference Papers
Scene Invariant Crowd Counting
David Ryan, Simon Denman, Sridha Sridharan and Clinton Fookes
Digital Image Computing: Techniques and Applications (DICTA), 2011
[Paper] [Datasets] [IEEE]
Textures of Optical Flow for Real-Time Anomaly Detection in Crowds
David Ryan, Simon Denman, Clinton Fookes and Sridha Sridharan
Advanced Video and Signal Based Surveillance (AVSS), 2011
[Paper] [IEEE]
Crowd Counting Using Group Tracking and Local Features
David Ryan, Simon Denman, Clinton Fookes and Sridha Sridharan
Advanced Video and Signal-Based Surveillance (AVSS), 2010
[Paper] [IEEE]
Crowd Counting Using Multiple Local Features
David Ryan, Simon Denman, Clinton Fookes and Sridha Sridharan
Digital Image Computing: Technqiues and Applications (DICTA), 2009
[Paper] [IEEE]
Scene Invariant Crowd Counting for Real-Time Surveillance
David Ryan, Simon Denman, Clinton Fookes and Sridha Sridharan
International Conference on Signal Processing and Communication Systems (ICSPCS), 2008
[Paper] [IEEE]
Semi-Supervised Intelligent Surveillance System for Secure Environments
Clinton Fookes, Simon Denman, Ruan Lakemond, David Ryan, Sridha Sridharan and Massimo Piccardi
International Symposium on Industrial Electronics (ISIE), 2010
[Paper] [IEEE]