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- Sahan S Hiniduma Udugama Gamage, Joan Lasenby
- Journal of biomechanics
- 2002

A new method is proposed for estimating the parameters of ball joints, also known as spherical or revolute joints and hinge joints with a fixed axis of rotation. The method does not require manualâ€¦ (More)

- Andreas Aristidou, Joan Lasenby
- Graphical Models
- 2011

Inverse Kinematics is defined as the problem of determining a set of appropriate joint configurations for which the end effectors move to desired positions as smoothly, rapidly, and as accurately asâ€¦ (More)

- Andreas Aristidou, Joan Lasenby
- The Visual Computer
- 2011

Optical motion capture systems suffer from marker occlusions resulting in loss of useful information. This paper addresses the problem of real-time joint localisation of legged skeletons in theâ€¦ (More)

- Joan Lasenby, W. J. Fitzgerald, Anthony N. Lasenby, C. J. L. Doran
- International Journal of Computer Vision
- 1998

We discuss a coordinate-free approach to the geometry of computer vision problems. The technique we use to analyse the three-dimensional transformations involved will be that of geometric algebra: aâ€¦ (More)

- Andreas Aristidou, Joan Lasenby
- 2010 4th International Symposium onâ€¦
- 2010

Articulated hand tracking systems have been commonly used in virtual reality applications, including systems with human-computer interaction or interaction with game consoles. However, building anâ€¦ (More)

- Maurice Ringer, Joan Lasenby
- BMVC
- 2002

Model-based optical motion capture systems require knowledge of the position of the markers relative to the underlying skeleton, the lengths of the skeletonâ€™s limbs, and which limb each marker isâ€¦ (More)

- Stuart Bennett, Joan Lasenby
- Computer Vision and Image Understanding
- 2014

Localization of chess-board vertices is a common task in computer vision, underpinning many applications, but relatively little work focusses on designing a specific feature detector that is fast,â€¦ (More)

- Chris Doran, Anthony N. Lasenby, Joan Lasenby
- ArXiv
- 2002

Projective geometry provides the preferred framework for most implementations of Euclidean space in graphics applications. Translations and rotations are both linear transformations in projectiveâ€¦ (More)

- Maurice Ringer, Joan Lasenby
- BMVC
- 2000

This paper describes a scheme for modelling and tracking the motion of articulated bodies using a number of video cameras. The aim is to obtain complete and accurate information on theâ€¦ (More)

- Rich Wareham, Jonathan Cameron, Joan Lasenby
- IWMM/GIAE
- 2004

This paper introduces the mathematical framework of conformal geometric algebra (CGA) as a language for computer graphics and computer vision. Specifically it discusses a new method for pose andâ€¦ (More)