Tracking Humans

Author: David Diaz
Publisher: Rowman & Littlefield
ISBN: 0762794828
Size: 51.82 MB
Format: PDF
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Tracker. The very word evokes images of buckskin-clad braves crouching over the ground, carefully studying the signs before them—a part of history. But the modern world has not put behind it the need for the earthy business of tracking. Such skills are still routinely used by the military, rescue personnel, and law enforcement, as well as by hunters and people living at subsistence level throughout the world. Tracking Humans is the ultimate authoritative guide to this most complex pursuit. A great resource for military, law enforcement, and rescue professionals, Tracking Humans is also useful for outdoor enthusiasts. Users will find it invaluable as an on-site manual to assist in any ongoing search. Unlike many tracking manuals, this guide focuses on tracking humans, whether they're enemy combatants or lost children. Author David Diaz explains what it takes to be an expert tracker, from the physical stamina to the focus and perception necessary to do the job correctly. He explains the tools of the tracker and presents essential safety tips every tracker should know. Tracking Humans is an important tool for anyone dealing with missing persons—it could be an essential lifesaver.

Conditional Random People Tracking Humans With Crfs And Grid Filters

Author:
Publisher:
ISBN:
Size: 47.77 MB
Format: PDF, Mobi
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We describe a state-space tracking approach based on a Conditional Random Field (CRF) model, where the observation potentials are learned from data. We find functions that embed both state and observation into a space where similarity corresponds to L1 distance, and define an observation potential based on distance in this space. This potential is extremely fast to compute and in conjunction with a grid-filtering framework can be used to reduce a continuous state estimation problem to a discrete one. We show how a state temporal prior in the grid-filter can be computed in a manner similar to a sparse HMM, resulting in real-time system performance. The resulting system is used for human pose tracking in video sequences.

Analyzing Video Sequences Of Multiple Humans

Author: Jun Ohya
Publisher: Springer Science & Business Media
ISBN: 1461510031
Size: 43.53 MB
Format: PDF, Mobi
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Analyzing Video Sequences of Multiple Humans: Tracking, Posture Estimation and Behavior Recognition describes some computer vision-based methods that analyze video sequences of humans. More specifically, methods for tracking multiple humans in a scene, estimating postures of a human body in 3D in real-time, and recognizing a person's behavior (gestures or activities) are discussed. For the tracking algorithm, the authors developed a non-synchronous method that tracks multiple persons by exploiting a Kalman filter that is applied to multiple video sequences. For estimating postures, an algorithm is presented that locates the significant points which determine postures of a human body, in 3D in real-time. Human activities are recognized from a video sequence by the HMM (Hidden Markov Models)-based method that the authors pioneered. The effectiveness of the three methods is shown by experimental results.

Multimodal Technologies For Perception Of Humans

Author: Rainer Stiefelhagen
Publisher: Springer Science & Business Media
ISBN: 3540685847
Size: 14.88 MB
Format: PDF, ePub
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This book constitutes the thoroughly refereed joint post-workshop proceedings of two co-located events: the Second International Workshop on Classification of Events, Activities and Relationships, CLEAR 2007, and the 5th Rich Transcription 2007 Meeting Recognition evaluation, RT 2007, held in succession in Baltimore, MD, USA, in May 2007. The workshops had complementary evaluation efforts; CLEAR for the evaluation of human activities, events, and relationships in multiple multimodal data domains; and RT for the evaluation of speech transcription-related technologies from meeting room audio collections. The 35 revised full papers presented from CLEAR 2007 cover 3D person tracking, 2D face detection and tracking, person and vehicle tracking on surveillance data, vehicle and person tracking aerial videos, person identification, head pose estimation, and acoustic event detection. The 15 revised full papers presented from RT 2007 are organized in topical sections on speech-to-text, and speaker diarization.

Automated Human Recognition And Tracking For Video Surveillance System

Author: Fadhlan Hafizhelmi bin Kamaru Zaman
Publisher:
ISBN:
Size: 46.75 MB
Format: PDF, Kindle
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Recent research in video surveillance system has shown an increasing focus on creating reliable systems utilizing non-computationally expensive technique for observing humans' appearance, movements and activities, thus providing analytical information for advanced human behavior analysis and realistic human modeling. In order for the system to function, it requires robust method for detecting and tracking human from a given input of video streams. In this thesis, a human detection technique suitable for video surveillance is presented which requires fast computations in addition of accurate results. The techniques proposed include adaptive frame differencing for background subtraction, contrast adjustment for shadow removal, and shape based approach for human detection. The tracking technique on the other hand uses correspondence approach. Event Based Video Retrieval (EBVR) system is also proposed for efficient surveillance data management and automated human recognition with unique ID assignment. Proposed human detection and tracking are integrated with EBVR and motion detection into a complete automated surveillance system called Active Vis Video Surveillance Analysis System (AVSAS) which produces good result and real-time performance especially in non-crowded scene. The EBVR system also proves to be able to handle automated human recognition with unique ID assignment accurately.

Computational Studies Of Human Motion

Author: David A. Forsyth
Publisher: Now Publishers Inc
ISBN: 1933019301
Size: 56.18 MB
Format: PDF, ePub, Docs
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Computational Studies of Human Motion: Part 1, Tracking and Motion Synthesis reviews methods for kinematic tracking of the human body in video. The review confines itself to the earlier stages of motion, focusing on tracking and motion synthesis. There is an extensive discussion of open issues. The authors identify some puzzling phenomena associated with the choice of human motion representation --- joint angles vs. joint positions. The review concludes with a quick guide to resources and an extensive bibliography of over 400 references. Computational Studies of Human Motion: Part 1, Tracking and Motion Synthesis is an invaluable reference for those engaged in computational geometry, computer graphics, image processing, imaging in general, and robotic.

Control Theory For Humans

Author: Richard J. Jagacinski
Publisher: CRC Press
ISBN: 1135690227
Size: 36.73 MB
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This textbook provides a tutorial introduction to behavioral applications of control theory. Control theory describes the information one should be sensitive to and the pattern of influence that one should exert on a dynamic system in order to achieve a goal. As such, it is applicable to various forms of dynamic behavior. The book primarily deals with manual control (e.g., moving the cursor on a computer screen, lifting an object, hitting a ball, driving a car), both as a substantive area of study and as a useful perspective for approaching control theory. It is the experience of the authors that by imagining themselves as part of a manual control system, students are better able to learn numerous concepts in this field. Topics include varieties of control theory, such as classical, optimal, fuzzy, adaptive, and learning control, as well as perception and decision making in dynamic contexts. The authors also discuss implications of control theory for how experiments can be conducted in the behavioral sciences. In each of these areas they have provided brief essays intended to convey key concepts that enable the reader to more easily pursue additional readings. Behavioral scientists teaching control courses will be very interested in this book.

Building The Information Society

Author: Rene Jacquart
Publisher: Springer Science & Business Media
ISBN: 9781402081569
Size: 55.57 MB
Format: PDF, ePub
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In the context of the 18th IFIP World Computer Congress (WCC’04), and beside the traditional organization of conferences, workshops, tutorials and student forum, it was decided to identify a range of topics of dramatic interest for the building of the Information Society. This has been featured as the "Topical day/session" track of the WCC’04. Topical Sessions have been selected in order to present syntheses, latest developments and/or challenges in different business and technical areas. Building the Information Society provides a deep perspective on domains including: the semantic integration of heterogeneous data, virtual realities and new entertainment, fault tolerance for trustworthy and dependable information infrastructures, abstract interpretation (and its use for verification of program properties), multimodal interaction, computer aided inventing, emerging tools and techniques for avionics certification, bio-, nano-, and information technologies, E-learning, perspectives on ambient intelligence, the grand challenge of building a theory of the Railway domain, open source software in dependable systems, interdependencies of critical infrastructure, social robots, as a challenge for machine intelligence. Building the Information Society comprises the articles produced in support of the Topical Sessions during the IFIP 18th World Computer Congress, which was held in August 2004 in Toulouse, France, and sponsored by the International Federation for Information Processing (IFIP).