VVG03
https://diglib.eg.org:443/handle/10.2312/1029
ISBN 3-905673-54-12024-03-28T23:40:45ZCollaborative Vision and Interactive Mosaicing
https://diglib.eg.org:443/handle/10.2312/vvg20031028
Collaborative Vision and Interactive Mosaicing
Robinson, J.A.
Peter Hall and Philip Willis
I propose criteria for collaborative vision applications where a camera user/operator and a computer work together to analyse a scene. An example of how these may be fulfilled is provided in IMP - an interactive mosaicing program.IMP generates mosaics in real-time, interacting with the user to cue camera movement and relay performance in-formation.
2003-01-01T00:00:00ZApplications of Clifford Algebra in Mixed Reality Environment
https://diglib.eg.org:443/handle/10.2312/vvg20031027
Applications of Clifford Algebra in Mixed Reality Environment
Ho, E.Y.T.
Peter Hall and Philip Willis
The 'beauty' of Clifford's Geometric Algebras is its ability to incorporate other algebras and it is the 'mother' algebra for all algebras. This paper introduces the advantage of using this algebra by combining and augmenting certain group of algebras, such as linear algebra, quaternion algebra, the Grassmann algebra and projective algebra to simplify mathematical manipulations in 3-dimensional rotations and projective geometry, especially in the context of mixed reality environment. Those 'augmented' representations are shown with applications in the mixed reality environment, especially for registration and computer vision based object recognition issues. Some simple scenarios with place-holder objects are described at the end for a full understanding of the mixed reality applications before other most recent engineering and computer science areas using this algebra for their applications are briefly discussed.
2003-01-01T00:00:00ZDigitisation to Presentation- BuildingVirtual Museum Exhibitions
https://diglib.eg.org:443/handle/10.2312/vvg20031026
Digitisation to Presentation- BuildingVirtual Museum Exhibitions
Patel, M.; White, M.; Walczak, K.; Sayd, P.
Peter Hall and Philip Willis
We describe an innovative system designed for museums to create, manage and present multimedia based representations of museum artefacts in virtual exhibitions both inside and outside museums. Our system creates digital surrogates through a novel stereo photogrammetry system with little user interaction. The resulting 3D objects are refined using state-of-the-art 3D modelling software configured for ease of use by museum staff. A repository of such digital surrogates is managed in an XML enabled relational database and provides the basis for the creation and presentation of virtual museum exhibitions, allowing current museum websites to evolve from a 2D to a 3D multimedia-rich domain. In this paper, we discuss the modelling and refinement processes which are based on stereo photogrammetry and the creation and visualisation of virtual museum exhibitions using virtual and augmented reality techniques.
2003-01-01T00:00:00ZEnhanced Texture Editing using Self Similarity
https://diglib.eg.org:443/handle/10.2312/vvg20031031
Enhanced Texture Editing using Self Similarity
Brooks, S.; Cardle, M.; Dodgson, N.A.
Peter Hall and Philip Willis
Texture mapping is an indispensable tool for achieving realism in computer graphics. Significant progress has been made in recent years with regards to the synthesis and editing of 2D texture images. However, the exploration of user control for semi-automatic texture editing remains an open area of research. We present methods that partially address the semantic and technical limitations of Self-Similarity Based Editing. This is achieved by providing the user with more control over the similarity metric during editing and over spatial rearrangement during cloning.
2003-01-01T00:00:00Z