Minimally invasive surgery (MIS) is performed for a growing number of treatments. Whereas open surgery requires large incisions, MIS relies on small incisions through which instruments are inserted and tissues are visualized with a camera. MIS results in benefits for patients compared with open surgery, but degrades the surgeon's perceptual-motor performance. We used a laparoscopic simulator to...

Multiview applications endow final users with the possibility to freely navigate within 3D scenes with minimumdelay. A real feeling of scene navigation is enabled by transmitting multiple high-quality camera views, which can be used to synthesize additional virtual views to offer a smooth navigation. However, when network resources are limited, not all camera views can be sent at high quality. ...

A number of recent papers have demonstrated that camera "selfcalibration" can be accomplished purely from image measurements, without requiring special calibration objects or known camera motion. We describe a method, based on self-calibration, for obtaining (scaled) Euclidean structure from multiple uncalibrated perspective images using only point matches between views. The method is in two st...

We present a 3D modeling system for traffic surveillance applications. The application contains several cameras positioned around a traffic scene. The video signals are compressed and streamed to a central client. At the central client a scene reconstruction is carried out, using all 2D camera views utilizing 3D camera calibration information. To combine all views into a 3D model, moving object...

We present a novel multi-camera framework to extract reliable pathlets [1] from tracking data. The proposed approach weights tracks based on their spatial and orientation similarity to simultaneous tracks observed in other camera views. The weighted tracks are used to build a Markovian state space of the environment and Spectral Clustering is employed to extract pathlets from a state-wise simil...

In this paper we present a disjoint camera track matching algorithm based on a “cumulative colour histogram transformation”, the “major colour” histograms matching and the post-matching integration algorithms. In order to reduce the “effects of variable illuminations” in disjoint camera environment, a cumulative colour histogram transformation is applied to located moving object image first. Th...

We present a novel technique for interpolating between two views of a dynamic scene. Our approach extends the concept of view morphing introduced in SD96] and retains the relative advantages of that method. The interpolation will portray one possible physically-valid version of what transpired in the scene during the intervening time between views. The scene is assumed to consist of a small num...

A method for recovering structure and motion from a set of scaled orthographic silhouette views with unconstrained camera motion is presented. The outer epipolar tangencies between six or more views are used simultaneously to recover the relative pose of the cameras and hence the visual hull of the object. The camera representation proposed permits a closed form solution in the optimization of ...

A method for recovering structure and motion from a set of scaled orthographic silhouette views with unconstrained camera motion is presented. The outer epipolar tangencies between six or more views are used simultaneously to recover the relative pose of the cameras and hence the visual hull of the object. The camera representation proposed permits a closed form solution in the optimization of ...

In this paper, we propose a real time system for tracking targets across blind regions of multiple cameras with non-overlapping fields of views (FOVs) using camera topology, and targets’ motion and shape information. Kalman filters are used to robustly track each target’s shape and motion in each camera view and the common ground plane view composed of all camera views. The target’s track in th...