− We propose a vision based 3D object recognition and tracking system, which provides high level scene descriptions such as object identification and 3D pose information. The system is composed of object recognition part and real-time tracking part. In object recognition, we propose a feature which is robust to scale, rotation, illumination change and background clutter. A probabilistic voting ...

A method of robust feature-detection is proposed for visual tracking with a pan-tilt head. Even with good foreground models, the tracking process is liable to be disrupted by strong features in the background. Previous researchers have shown that the disruption can be somewhat suppressed by the use of image-subtraction. Building on this idea, a more powerful statistical model of background inte...

Tissue tracking technology of routinely acquired cardiovascular magnetic resonance (CMR) cine acquisitions has increased the apparent ease and availability of non-invasive assessments of myocardial deformation in clinical research and practice. Its widespread availability thanks to the fact that this technology can in principle be applied on images that are part of every CMR or echocardiographi...

Autonomous navigation of robot for on-road driving has gained growing importance in automobile research area. Image based path tracking is being considered for future driving assistance. Image from a monocular camera directing in front side is used for tracking the drivable road area and road direction. Vanishing Point estimation has been considered very important in case of driver assistance s...

In video-conferencing, the participant watches the screen rather than the camera. This turns the gaze direction away from the other party and makes eye contact impossible. Artificial gaze redirection by iris repositioning was proposed, but the feasibility of crucial algorithmic components, especially the challenging computer vision parts, was not demonstrated. This paper demonstrates a system f...

When observing a dynamic world, the size of image structures may vary over time. This article emphasizes the need for including explicit mechanisms for automatic scale selection in feature tracking algorithms in order to: (i) adapt the local scale of processing to the local image structure, and (ii) adapt to the size variations that may occur over time. The problems of corner detection and blob...

Accurate and fast registration of intra-operative 2D projection images to 3D pre-operative images is an important component of many image-guided surgical procedures. If the 2D image acquisition is repeated several times during the procedure, the registration problem can be cast instead as a 3D tracking problem. To solve the 3D problem, we propose in this paper to apply a real-time 2D region tra...

This paper presents a integrated solution to track multiple non-rigid objects (pedestrians) in a multiple cameras system with ground-plane trajectory prediction and occlusion modelling. The resulting system is able to maintain the tracking of pedestrians before, during and after occlusion. Pedestrians are detected and segmented using a dynamic background model combined with motion detection and...

Accurate and fast registration of intra-operative 2D projection images to 3D pre-operative images is an important component of many image-guided surgical procedures. If the 2D image acquisition is repeated several times during the procedure, the registration problem can be cast instead as a 3D tracking problem. To solve the 3D problem, we propose in this paper to apply a real-time 2D region tra...