Motion detection in spatio-temporal space

Motion tracking as spatio-temporal motion boundary detection

The purpose of this study is to investigate tracking of moving objects in a sequence of images by detecting the surface generated by motion boundaries in the space–time domain. Estimation of this spatio-temporal surface is formulated as a Bayesian image partitioning problem. Minimization of the resulting energy functional seeks a solution biased toward smooth closed surfaces which coincide with...

Object motion detection using information theoretic spatio-temporal saliency

Article history: Received 30 June 2008 Received in revised form 23 January 2009 Accepted 2 February 2009

Direct Obstacle Detection and Motion from Spatio-Temporal Derivatives

Autonomous vehicles need a means of detecting obstructions on its path, to avoid collision. In this paper, a novel approach to obstacle detection is presented. A camera moves on a visible ground plane with the optical axis parallel to the ground. Camera motion parameters are linearly related to rst order spatio-temporal derivatives of the taken image sequence; image ow is not needed. Motion is ...

Spatio-Temporal Video Denoising by Block-Based Motion detection

This paper proposes a new video denoising technique where spatially adaptive noise filtering in wavelet (transform) domain is combined with temporal filtering in signal domain. AWGN is being considered which behaves as Gaussian random variable. In this paper, spatial filtering of individual frames is done in the wavelet domain, and the filtering between the frames is done by recursive temporal ...

Detection and Generalization of Spatio-temporal Trajectories for Motion Imagery