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Displaying 1-6 out of 6 total
Computing Accurate Correspondences across Groups of Images
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Timothy F. Cootes, Carole J. Twining, Vladimir S. Petrović, Kolawole O. Babalola, Christopher J. Taylor
Issue Date:November 2010
pp. 1994-2005
Groupwise image registration algorithms seek to establish dense correspondences between sets of images. Typically, they involve iteratively improving the registration between each image and an evolving mean. A variety of methods have been proposed, which d...
 
Extraction of Visual Features for Lipreading
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Iain Matthews, Timothy F. Cootes, J. Andrew Bangham, Stephen Cox, Richard Harvey
Issue Date:February 2002
pp. 198-213
<p><b>Abstract</b>—The multimodal nature of speech is often ignored in human-computer interaction, but lip deformations and other body motion, such as those of the head, convey additional information. We integrate speech cues from many so...
 
Active Appearance Models
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Timothy F. Cootes, Gareth J. Edwards, Christopher J. Taylor
Issue Date:June 2001
pp. 681-685
<p><b>Abstract</b>—We describe a new method of matching statistical models of appearance to images. A set of model parameters control modes of shape and gray-level variation learned from a training set. We construct an efficient iterative...
 
Automatic Interpretation and Coding of Face Images Using Flexible Models
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Andreas Lanitis, Chris J. Taylor, Timothy F. Cootes
Issue Date:July 1997
pp. 743-756
<p><b>Abstract</b>—Face images are difficult to interpret because they are highly variable. Sources of variability include individual appearance, 3D pose, facial expression , and lighting. We describe a compact parametrized model of facia...
 
Modeling the Process of Aging in Face Images
Found in: Computer Vision, IEEE International Conference on
By Andreas Lanitis, Chris J. Taylor, Timothy F. Cootes
Issue Date:September 1999
pp. 131
The process of aging causes significant alterations in the facial appearance of individuals. When compared with other sources of variation in face images (e.g. variation due to changes in pose and expression), appearance variation due to aging displays som...
 
Gradient Constraints Can Improve Displacement Expert Performance
Found in: Pattern Recognition, International Conference on
By Philip A. Tresadern, Timothy F. Cootes
Issue Date:August 2010
pp. 157-160
The `displacement expert' has recently proven popular for rapid tracking applications. In this paper, we note that experts are typically constrained only to produce approximately correct parameter updates at training locations. However, we show that incorp...
 
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