Outputs (487)

Bayesian classification of shapes hidden in point cloud data (2009)
Presentation / Conference Contribution

An interesting challenge in image processing is to classify shapes of polygons formed by selecting and ordering points in a 2D cluttered point cloud. This kind of data can result, for example, from a simple preprocessing of images containing objects... Read More about Bayesian classification of shapes hidden in point cloud data.

A phase field higher-order active contour model of directed networks (2009)
Presentation / Conference Contribution

The segmentation of directed networks is an important problem in many domains, e.g. medical imaging (vascular networks) and remote sensing (river networks). Directed networks carry a unidirectional flow in each branch, which leads to characteristic g... Read More about A phase field higher-order active contour model of directed networks.

A theoretical and numerical study of a phase field higher-order active contour model of directed networks (2010)
Presentation / Conference Contribution

We address the problem of quasi-automatic extraction of directed networks, which have characteristic geometric features, from images. To include the necessary prior knowledge about these geometric features, we use a phase field higher-order active co... Read More about A theoretical and numerical study of a phase field higher-order active contour model of directed networks.

Target-driven perceptual grouping (1998)
Presentation / Conference Contribution

Region Extraction from Multiple Images (2001)
Presentation / Conference Contribution

We present a method for region identification in multiple images. A set of regions in different images and the correspondences on their boundaries can be thought of as a boundary in the multi-dimensional space formed by the product of the individual... Read More about Region Extraction from Multiple Images.

Texture Discrimination Using Multimodal Wavelet Packet Subbands (2004)
Presentation / Conference Contribution

The subband histograms of wavelet packet bases adapted to individual texture classes often fail to display the leptokurtotic behaviour shown by the standard wavelet coefficients of 1natural' images. While many subband histograms remain leptokurtotic... Read More about Texture Discrimination Using Multimodal Wavelet Packet Subbands.

Urban Road Extraction from VHR Images Using a Multiscale Image Model and a Phase Field Model of Network Geometry (2007)
Presentation / Conference Contribution

This paper addresses the problem of automatically extracting the main road network in a dense urban area from a very high resolution optical satellite image using a variational approach. The model energy has two parts: a phase field higher-order acti... Read More about Urban Road Extraction from VHR Images Using a Multiscale Image Model and a Phase Field Model of Network Geometry.

Riemannian Analysis of Probability Density Functions with Applications in Vision (2007)
Presentation / Conference Contribution

Applications in computer vision involve statistically analyzing an important class of constrained, nonnegative functions, including probability density functions (in texture analysis), dynamic time-warping functions (in activity analysis), and re-par... Read More about Riemannian Analysis of Probability Density Functions with Applications in Vision.

Phase diagram of a higher-order active contour energy: the case of a long bar (2008)
Presentation / Conference Contribution

An extended phase field higher-order active contour model for networks and its application to road network extraction from VHR satellite images (2008)
Presentation / Conference Contribution

This paper addresses the segmentation from an image of entities that have the form of a 'network', i.e. the region in the image corresponding to the entity is composed of branches joining together at junctions, e.g. road or vascular networks. We pres... Read More about An extended phase field higher-order active contour model for networks and its application to road network extraction from VHR satellite images.

A Markov random field model for extracting near-circular shapes (2009)
Presentation / Conference Contribution

We propose a binary Markov random field (MRF) model that assigns high probability to regions in the image domain consisting of an unknown number of circles of a given radius. We construct the model by discretizing the `gas of circles' phase field mod... Read More about A Markov random field model for extracting near-circular shapes.

Segmentation of networks from VHR remote sensing images using a directed phase field HOAC model (2010)
Presentation / Conference Contribution

We propose a new algorithm for network segmentation from very high resolution (VHR) remote sensing images. The algorithm performs this task quasi-automatically, that is, with no human intervention except to fix some parameters. The task is made diffi... Read More about Segmentation of networks from VHR remote sensing images using a directed phase field HOAC model.

It's not about the commas: why referencing really matters. (2010)
Presentation / Conference Contribution

'Cite them right': Developing students' citation skills (2006)
Presentation / Conference Contribution

Student evaluation of two information literacy packages: Skills Plus and MOSAIC. (2006)
Presentation / Conference Contribution

The Unknown Artists of the Seventeenth-Century Spectacular Stage (2009)
Presentation / Conference Contribution

The monumentality of the basilica stoa at Thera and Antoninus Pius (1994)
Presentation / Conference Contribution

Paul's Cross and special worship (2013)
Preprint / Working Paper

Statius in Dante's Commedia (2013)
Preprint / Working Paper

Language and sovereignty: titles of address and the royal edict of 1632 (2013)
Preprint / Working Paper