Research D.W. Murray , E.J. Hayman, T. Thorhallsson. Keywords tracking, zoom, structure. Keyphrases visual tracking while zooming, 3D visual structure recovery while zooming. Recent results have showed how cameras which are free to zoom, and rotate but not translate, can be calibrated using special properties of the mapping between images obtained under rotation. Rotating and zooming cameras are important in practical applications such as surveillance and televised outside broadcasts, where the cameras can zoom and rotated independently but are coupled by viewing the same scene.
Work is underway to explore how scene structure can be best recovered in such situations.
Keyphrases self-calibration while rotating and zooming, 3D visual structure recovery. This project is exploring methods for automatically adjusting the zoom setting of an active camera so that it maintains the ratio of projected areas in the scene and image around the fixation point. The project aims to develop a hierarchy of approaches for zoom control, driven by a range of inputs from the simplest 2D image information to, say, a demand to recover more detailed structural information in a particular part of the scene. Research D.W. Murray , B.J. Tordoff. Keywords vision, zoom, cameras.