Journal ArticleDOI
Omni-directional visual surveillance
TLDR
A frame-rate, low-power, omni-directional tracking system (LOTS), with novel system component details is quasi-connected-components (QCC), which combines gap filling, thresholding-with-hysteresis (TWH), and a novel region merging/cleaning approach.About:
This article is published in Image and Vision Computing.The article was published on 2004-07-01. It has received 75 citations till now. The article focuses on the topics: Visibility (geometry) & Tracking system.read more
Citations
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Journal ArticleDOI
Computational Cameras: Convergence of Optics and Processing
Changyin Zhou,Shree K. Nayar +1 more
TL;DR: This paper uses the abstract notion of light field representation as a general tool to describe computational camera designs, where each camera can be formulated as a projection of a high-dimensional light field to a 2-D image sensor.
Journal ArticleDOI
Heterogeneous Fusion of Omnidirectional and PTZ Cameras for Multiple Object Tracking
TL;DR: Two methods are proposed: 1) geometry and 2) homography calibration, where polynomials with automated model selection are used to approximate the camera's projection model and spatial mapping, respectively, to improve the mapping accuracy and improve flexibility in adjusting to varying system configurations.
Journal ArticleDOI
Can You See Me Now? Sensor Positioning for Automated and Persistent Surveillance
TL;DR: This paper proposes sensor-planning methods that improve existing algorithms by adding handoff rate analysis, and preserves necessary uniform overlapped FOVs between adjacent cameras for an optimal balance between coverage and handoff success rate.
Journal ArticleDOI
Visual Attention on the Sphere
TL;DR: A novel computational approach is presented that performs in spherical geometry and thus is suitable for omnidirectional images and the homogeneity of the detected visual attention in omnid Directional images is illustrated.
Journal ArticleDOI
GPS coordinates estimation and camera calibration from solar shadows
Imran N. Junejo,Hassan Foroosh +1 more
TL;DR: A novel application is presented where one can accurately determine the geo-location of the camera up to a longitude ambiguity using only three points from these shadow trajectories without using any GPS or other special instruments.
References
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Proceedings ArticleDOI
Adaptive background mixture models for real-time tracking
Chris Stauffer,W.E.L. Grimson +1 more
TL;DR: This paper discusses modeling each pixel as a mixture of Gaussians and using an on-line approximation to update the model, resulting in a stable, real-time outdoor tracker which reliably deals with lighting changes, repetitive motions from clutter, and long-term scene changes.
Journal ArticleDOI
Closed-form solution of absolute orientation using unit quaternions
TL;DR: A closed-form solution to the least-squares problem for three or more paints is presented, simplified by use of unit quaternions to represent rotation.
Journal ArticleDOI
Pfinder: real-time tracking of the human body
TL;DR: Pfinder is a real-time system for tracking people and interpreting their behavior that uses a multiclass statistical model of color and shape to obtain a 2D representation of head and hands in a wide range of viewing conditions.
Book
Computer and Robot Vision
TL;DR: This two-volume set is an authoritative, comprehensive, modern work on computer vision that covers all of the different areas of vision with a balanced and unified approach.
Book ChapterDOI
Non-parametric Model for Background Subtraction
TL;DR: A novel non-parametric background model that can handle situations where the background of the scene is cluttered and not completely static but contains small motions such as tree branches and bushes is presented.