This paper presents a framework for surveillance videos of stationery places. To start with, we implement an algorithm to group incoming video stream into meaningful pieces called segments. Further we extract a feature of segment (i.e. motion) which is used to characterize the segments. Motion of a segment is extracted using two dimensional matrix which is constructed using accumulated pixel di...

In this paper, a motion field segmentation scheme for video compression is presented. A split-and-merge segmentation technique and linear regression are used to segment the field and an affine motion model is used to describe the movements of the regions. In the regression, a linearization of the displaced frame difference is minimized directly. The results are compared with block-based motion ...

The " knotting " properties of Brownian motion are investigated. Because the path of Brownian motion in 3-space intersects itself, the topological definition of a knot does not apply. A modified concept is defined; implication in a knot-tube. It is shown that 3-space Brownian motion is implicated in infinitely many disjoint knot-tubes in every time interval. As a corollary every segment of the ...

Multimedia event detection has become a popular research topic due to the explosive growth of video data. The motion features in a video are often used to detect events because an event may contain some specific actions or moving patterns. Raw motion features are extracted from the entire video first and then aggregated to form the final S. Phan ( ) · T. D. Ngo The Graduate University for Advan...

Future space missions will require the integration of voice, video and data communications at increasing speeds and reduced costs. Both manned and un-manned missions may use the NASA/JPL Deep Space Network (DSN), which consists of two segments, the space segment and the ground segment. The space segment will use Consultative Committee for Space Data Systems (CCSDS) Advanced Orbiting Systems (AO...

Cross-sectional echocardiography was used to study left ventricular wall motion in 44 patients with myocardial infarction, and the extent of observed asynergy was correlated with left ventricular function. Echocardiographic studies were performed in short and long axes of the ventricle and nine segments were identified for analysis. Wall motion in each segment was classified as normal, hyperkin...

BACKGROUND Intrafractional motion can be a substantial uncertainty in precision radiotherapy. Conventionally, the target volume is expanded to account for the motion. Couch-tracking is an alternative, where the patient is moved to compensate for the tumor motion. However, the couch motion may influence the patient's stress and respiration behavior decreasing the couch-tracking effectiveness. ...

Sensitivity to simulated directional sound motion in the rat primary auditory cortex. This paper examines neuron responses in rat primary auditory cortex (AI) during sound stimulation of the two ears designed to simulate sound motion in the horizontal plane. The simulated sound motion was synthesized from mathematical equations that generated dynamic changes in interaural phase, intensity, and ...

We describe a new technique that detects periodic motion. Assuming a static camera, we first segment moving objects from the background. By tracking objects of interest, we compute the object’s self-similarity as it evolves in time. For periodic motion, the self-similarity metric is periodic, and is Fourier analyzed to detect and characterize periodicity. Examples on real image sequences are gi...

A fundamental task of reconstructing non-rigid articulated motion from sequences of unstructured feature points is to solve the problem of feature correspondence and motion estimation. This problem is challenging in high-dimensional configuration spaces. In this paper, we propose a general model-based dynamic point matching algorithm to reconstruct freeform non-rigid articulated movements from ...