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This paper presents a new approach to the problem of camera localization with non-overlapping camera views, particularly relevant for video surveillance systems. We show how to recast localization as quasi-convex optimization under the L-Infinity norm. Thereby we add the problem of reconstructing camera centers and 3D points for non-overlapping cameras with known internal parameters and known rotations...
Video synchronization is one of the first steps in most of the multi-camera systems. In this paper we introduce a novel, computationally simple and reliable approach for video synchronization that does not require any pre-computed camera geometries or tracking certain features. We define a feature called center of motion (COM) and obtain its trajectories along the temporal axis for both videos. Then...
Calibration of camera networks is a well studied problem. However, most previous attempts assume all the cameras in the network to be synchronized which is especially difficult over large distances. In this paper we present a simple method to fully calibrate the asynchronized cameras of differing frame rates from the acquired video content directly. The presented methods either utilize content based...
This paper introduces a synchronization methodology for distributed vision based sensor networks with clock skew or variable frame rates. The methodology requires a ballistic or otherwise predictive object to be tracked by the sensor network and used to calibrate the clock skew and/or relative variable frame rates between the cameras. The relative time stamp of each image captured can be extracted...
This paper describes a method to estimate the temporal alignment between N unsynchronized video sequences captured by cameras with non-overlapping fields of view. The sequences are recorded by stationary video cameras, with fixed intrinsic and extrinsic parameters. The proposed approach reduces the problem of synchronizing N non-overlapping sequences to the robust estimation of a single line in RN+1...
This work aims at defining a computational model of human emotional entrainment. Music, as a non-verbal language to express emotions, is chosen as an ideal test bed for these aims. We start from multimodal gesture and motion signals, recorded in a real world collaborative condition in an ecological setting. Four violin players were asked to play, alone or in duo, a music fragment in two different...
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