| Document-Based and Message-Centric Security Using XML Authentication and Encryption for Coalition and Interagency Operations |
Sep-2009 |
228 pages |
| Authors:
William; Jeffrey S Sr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA MODELING VIRTUAL ENVIRONMENTS AND SIMULATION (MOVES)
|
 | Different agencies and different nations are not able to securely communicate and share structured information due to differences in security policies and data formats. The current evolution of security and data policies is not solving this fundamental problem. Document-based message-centric XML security can provide satisfactory security within a diversified communications framework between traditional and nontraditional partners by utilizing existing Web standards for XML canonicalization, XML digital signature, XML compression and ... |
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| Ambiguity Function Analysis for the Hybrid Mimo Phased-Array Radar (Postprint) |
Sep-2009 |
8 pages |
| Authors:
Muralidhar Rangaswamy; Daniel R Fuhrmann; J P Browning; MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| The Hybrid MIMO Phased Array Radar, or HMPAR, is a notional concept for a multisensor radar architecture that combines elements of traditional phased-array radar with the emerging technology of Multiple-Input Multiple Output (MIMO) radar. A HMPAR comprises a large number, MP, of T/R elements, organized into M subarrays of P elements each. Within each subarray, passive element level phase shifting is used to steer transmit and receive beams in some ... |
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| Experimental Investigation of the Performance of Image Registration and De-aliasing Algorithms |
Sep 2009 |
11 pages |
| Authors:
Peter N Crabtree; Phan D Dao; Richard H Picard; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
|
| Various image de-aliasing techniques and algorithms have been developed to improve the resolution of sensor-aliased images captured with an undersampled point spread function. In the literature these types of algorithms are sometimes included under the broad umbrella of superresolution. However, in the current paper we consider them to be a form of image restoration, because we aim to restore image resolution lost due to sensor aliasing, but only up to ... |
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| Error Bounds for Finite-Difference Methods for Rudin-Osher-Fatemi Image Smoothing |
Sep 2009 |
33 pages |
| Authors:
Jingyue Wang; Bradley J Lucier; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| We bound the difference between the solution to the continuous Rudin-Osher-Fatemi image smoothing model and the solutions to various finite-difference approximations to this model. These bounds apply to typical images, i.e., images with edges or with fractal structure. These are the first bounds on the error in numerical methods for ROF smoothing. |
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| Sparse Representations for Three-Dimensional Range Data Restoration |
Sep 2009 |
6 pages |
| Authors:
Mona Mahmoudi; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Sparse representations of signals, in particular with learned dictionaries, are widely used for state-of-the-art audio, image, and video restoration. In this paper, the problem of denoising and occlusion restoration of 3D range data based on dictionary learning and sparse representations is explored. We consider the 3D surface obtained from a desktop range scanner as an image, where the value of each pixel represents the depth of a point on the ... |
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| Multi-Aspect Radar Algorithms (MARA) Study |
31-Aug-2009 |
36 pages |
| Authors:
Donald Coleman; James K Hall; SCI-TEQ INC HERNDON VA
|
| Sci-Teq, Inc. submits this report as the second quarterly report on the 18 month study entitled Multi-Aspect Radar Algorithms (MARA). The MARA research study is investigating and defining a surveillance system concept for a net-sentric surveillance sensor system. The system will be comprised of multiple, geographically dispersed, multi-band, multi-static Inverse Synthetic Aperture Radar (ISAR) imaging sensors with co-located ESM sensors. The operational objective of the multi-sensor net-worked systems is to ... |
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| Optimal Time and Energy Efficiency in Legged Robotics |
17-Aug-2009 |
5 pages |
| Authors:
Paul Muench; Ka C Cheok; Gregory Czerniak; ARMY RESEARCH DEVELOPMENT AND ENGINEERING COMMAND WARREN MI
|
| Although bio-inspired legged robots have advantageous mobility, they can be very inefficient. Their intrinsic walking mobility is sometimes outweighed by the inefficiency of their drive-train. Some of these inefficiencies are due to collision losses, but they are also due to sub-optimal powering schemes. This paper addresses the powering schemes and seeks to clearly delineate an optimal solution to powering the walking motion of a two-legged or biped walker. We examine ... |
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| Free-Space Quantum Key Distribution using Multilevel Encoding via Transverse Field Modulation: Preprint |
01-Aug-2009 |
6 pages |
| Authors:
Mark T Gruneisen; AIR FORCE RESEARCH LAB KIRTLAND AFB NM
|
| Transverse modulation of the complex optical field defines sets of orthogonal states for multilevel quantum key distribution. Principles of holography are evaluated as a means of generating and sorting the single photon states. |
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| Universal Priors for Sparse Modeling(PREPRINT) |
Aug 2009 |
6 pages |
| Authors:
Ignacio Ramirez; Federico Lecumberry; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Sparse data models, where data is assumed to be well represented as a linear combination of a few elements from a dictionary, have gained considerable attention in recent years, and their use has led to state-of-the-art results in many signal and image processing tasks. It is now well understood that the choice of the sparsity regularization term is critical in the success of such models. In this work, we use ... |
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| Collaborating with the Private Sector |
Aug 2009 |
112 pages |
| Authors:
Frederick Bartell; Carrie Lacy; Melissa Moraczewski; Tanya Nodlinski; Sarah Norris; Kate Prasse; Ashley Thomalla; Katherine Zielinski; GLOBAL INNOVATION AND STRATEGY CENTER OMAHA NE INTERN PROGRAM
|
| Attacks on the nation's networks are increasing exponentially, as is a growing dependency on cyberspace. It is imperative that the nation's critical infrastructure is protected, especially telecommunications, financial systems, the water supply, electrical grids, and transportation. Currently, the private industry owns 85 percent of the nation's critical infrastructure, while the U.S. government owns only 15 percent. Thus, the U.S. government must work with the private industry to create a collaboration ... |
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| Collective Inference with Learned and Engineered Knowledge |
17-Jul-2009 |
18 pages |
| Authors:
David Jensen; MASSACHUSETTS UNIV AMHERST DEPT OF COMPUTER SCIENCE
|
| A persistent goal of research in artificial intelligence has been to enable learning and reasoning with probabilistic models in complex domains. Much of this work has been directed toward systems that complement, rather than replace, human abilities and knowledge. Models that fuse engineering knowledge (knowledge from human sources) with learned information (information gained algorithmically) can take advantage of the strengths of both approaches, yielding more accurate predictions. A particularly fruitful ... |
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| Nonlinear Geometric and Differential Geometric Guidance of UAVs for Reactive Collision Avoidance |
07-Jul-2009 |
69 pages |
| Authors:
Anusha Mujumdar; Radhakant Padhi; INDIAN INST OF SCIENCE BANGALORE (INDIA)
|
| Local collision avoidance for safe autonomous Unmanned Aerial Vehicles in an urban environment has been investigated. A nonlinear differential geometric guidance law based on 'collision cone approach' and 'dynamic inversion' was developed and successfully simulated. Both linear 'aiming point guidance' (APG) and nonlinear APG algorithms have been developed and validated from 3-D simulation studies. Finally a first-order autopilot was incorporated to provide satisfactory guidance with up to 0.2 second delay. ... |
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| Quantum Enhanced Imaging by Entangled States |
Jul-2009 |
123 pages |
| Authors:
Doyle Nichols; NORTHROP GRUMMAN SYSTEMS CORP LINTHICUM HEIGHTS MD
|
| The use of entangled states in a prospective standoff imaging sensor has been explored. Specifically, the question of whether enhanced performance (in terms of achievable resolution, in particular) may be obtained through the use of entangled states in a ghost imaging configuration has been investigated. The resiliency of such a system in the presence of transmission impairments that necessarily accompany sensors in a tactical environment, such as large optical loss, ... |
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| A Coalition Approach to Higher-Level Fusion |
Jul-2009 |
15 pages |
| Authors:
Michael Hinman; Luc Pigeon; Eloi Bosse; Dale Lambert; Steven Wark; Clinton Blackman; AIR FORCE RESEARCH LAB ROME NY INFORMATION DIRECTORATE
|
| This paper outlines a collaborative program of work in higher-level fusion being conducted between Australia, Canada, the United States, and the United Kingdom under the auspices of a TTCP panel on Information fusion. The paper shows how work from the four nations has been integrated through a common scenario, which the panel proposes to subsequently offer as a benchmarking scenario for the higher-level fusion community. |
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| Survey of Knowledge Representation and Reasoning Systems |
Jul-2009 |
|
| Authors:
Kerry Trentelman; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA)
|
 | As part of the information fusion task we wish to automatically fuse information derived from the text extraction process with data from a structured knowledge base. This process will involve resolving, aggregating, integrating and abstracting information - via the methodologies of Knowledge Representation and Reasoning - into a single comprehensive description of an individual or event. This report surveys the key principles underlying research in the field of Knowledge Representation ... |
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| 3D Facial Pattern Analysis for Autism |
Jul 2009 |
13 pages |
| Authors:
Ye Duan; MISSOURI UNIV-COLUMBIA
|
| The goal of this project is to use recently developed 3D shape acquisition technologies and advanced computational techniques to define the autism face and determine whether there is a statistically significant facial phenotype. During this report period, we had generated a set of precise, highly replicable 3D anthropometric data for core ASD children and age-matched, typically developing controls, which has not previously been done. We had conducted preliminary facial pattern ... |
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| Comparison of GOES Cloud Classification Algorithms Employing Explicit and Implicit Physics |
Jul 2009 |
13 pages |
| Authors:
Richard L Bankert; Cristian Mitrescu; Steven D Miller; Robert H Wade; NAVAL RESEARCH LAB MONTEREY CA
|
| Cloud-type classification based on multispectral satellite imagery data has been widely researched and demonstrated to be useful for distinguishing a variety of classes using a wide range of methods. The research described here is a comparison of the classifier output from two very different algorithms applied to Geostationary Operational Environmental Satellite (GOES) data over the course of one year. The first algorithm employs spectral channel thresholding and additional physically based ... |
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| Reconstruction of the Orientation Distribution Function in Single and Multiple Shell Q-Ball Imaging within Constant Solid Angle |
Jul 2009 |
37 pages |
| Authors:
Iman Aganj; Christophe Lenglet; Guillermo Sapiro; Essa Yacoub; Kamil Ugurbil; Noam Harel; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Q-ball imaging (QBI) is a high angular resolution diffusion imaging (HARDI) technique which has been proven very successful in resolving multiple intravoxel fiber orientations in MR images. The standard computation of the orientation distribution function (ODF, the probability of diffusion in a given direction) from q-ball data uses linear radial projection, neglecting the change in the volume element along each direction. This results in spherical distributions that are different from ... |
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| Active Computation for Network ATR Systems |
30-Jun-2009 |
7 pages |
| Authors:
Joseph A O'Sullivan; Michael D DeVore; WASHINGTON UNIV ST LOUIS MO DEPT OF ELECTRICAL AND SYSTEMS ENGINEERING
|
| Our work focused on design and implementations guidelines for ATR systems that must adapt to time-varying resource constraints. The goal is to have systems that can dynamically change based on the availability of time, number of processors, communication bandwidth, and system architecture including access to remote databases. The systems should have nearly optimal performance given the resources available. One set of designs proposed is based on hierarchical data and processing ... |
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| Investigation into the Impacts of Migration to Emergent NSA Suite B Encryption Standards |
Jun-2009 |
117 pages |
| Authors:
Jacob P Venema; Jonathan L Y Shu; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As information sharing becomes increasingly necessary for mission accomplishment within the Department of Defense, the rules for protecting information have tightened. The sustained and rapid advancement of information technology in the 21st century dictates the adoption of a flexible and adaptable cryptographic strategy for protecting national security information. RSA techniques, while formidable, have begun to present vulnerabilities to the raw computing power that is commercially available today. This thesis is ... |
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| Scalability of Robotic Controllers: Speech-Based Robotic Controller Evaluation |
Jun-2009 |
54 pages |
| Authors:
Elizabeth S Redden; Rodger A Pettitt; Christian B Carstens; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
|
| This study, which took place at Fort Benning, GA, focused on the feasibility of reducing robotic controller size by replacing some of the manual controls with speech-based controls. Eleven Soldiers from the Officers Candidate School served as participants. After training on the operation of the iRobot PackBot small unmanned ground vehicle (SUGV) system, each Soldier teleoperated the SUGV using two controller conditions; a combination of speech and manual control and ... |
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| Characterization of Robotic Tail Orientation as a Function of Platform Position for Surf-Zone Robots |
Jun-2009 |
103 pages |
| Authors:
Courtney L Holland; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Naval Postgraduate School Small Robot Initiative is an ongoing effort to develop autonomous robotic platforms for military applications. The latest design in this series, a quadruped robot with a tail for stability and obstacle climbing, is currently under development in collaboration with Case Western Reserve University. Tail orientation as a function of robot platform attitude is tested for angle of bank climbs at 10 and 15 degrees. Data indicate ... |
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| Programming Methodology for High Performance Applications on Tiled Architectures |
Jun-2009 |
431 pages |
| Authors:
Mark A Richards; Daniel P Campbell; GEORGIA INST OF TECH ATLANTA
|
| The core activity of the original Polymorphous Computing Architectures (PCA) program was to advance the design and implementation of several emerging academic multiprocessor-on-a-chip architecture projects (chip multiprocessors, or CMPs). The Georgia Tech team's primary role in the PCA program was to facilitate definitions and implementation of the Morphware Stable Interface (MSI), application software development architecture intended to be portable across PCA architectures, offer high development productivity, and maintain high performance ... |
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| Control of Small Robot Squads in Complex Adversarial Environments: a Review |
Jun-2009 |
32 pages |
| Authors:
Alexander Kott; STUART YOUNG; ARMY RESEARCH LAB ADELPHI MD
|
| While a number of excellent review articles on military robots have appeared in existing literature, this paper focuses on a distinct sub-space of related problems: small military robots organized into moderately sized squads, operating in a ground combat environment. Specifically, we consider the following: Command of practical small robots, comparable to current generation, small unmanned ground vehicles (e.g., Pac,Bots) with limited computing and sensor payload, as opposed to larger vehicle-sized ... |
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| Anticipatory Understanding of Adversary Intent: A Signature-Based Knowledge System |
Jun-2009 |
45 pages |
| Authors:
Dennis K Leedom; Robert G Eggleston; EVIDENCE BASED RESEARCH INC VIENNA VA
|
| This paper outlines the recent development of a new ontological framework for modeling the intentional behavior of an adversary relative to its long-term strategic goals within a complex and emergent battlespace. Motivated by recent military doctrine and knowledge management literature, the paper describes how an adversary and its battlespace environment can be represented by four classes of knowledge: (1) battlespace artifacts, (2) cause-effect system models, (3) tactical episodes, and (4) ... |
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| Integration of Cyber Situational Awareness into System Design and Development |
Jun-2009 |
79 pages |
| Authors:
Lee E Chase; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Cyber situational awareness (SA) is the correlation of network status to operational impact. This capability is increasingly important for commanders and individual weapon system platforms as the DoD continues its exploitation of net-centric operations. To achieve higher maturity levels of cyber SA, the acquisition community needs to act as an enabler by making cyber issues an integral part of early system design and development. This paper identifies key cyber characteristics ... |
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| Development of a Computer-aided Diagnosis System for Early Detection of Masses Using Retrospectively Detected Cancers on Prior Mammograms |
Jun-2009 |
128 pages |
| Authors:
Jun Wei; Wendy M Kohrt; L M Glode; Robert S Schwartz; Daniel W Barry; MICHIGAN UNIV ANN ARBOR
|
| The performance of a CAD system for subtle lesions is generally much lower than their performance for less subtle lesions. The goal of this project is to develop a CAD system using advanced computer vision techniques aiming at improved detection of retrospectively seen cancers on prior mammograms and incorporate the developed CAD system into our current CAD system. During the project years, we have performed the following tasks: (1) collect ... |
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| Enabling Test and Evaluation and Training for Undersea Range Programs |
Jun 2009 |
8 pages |
| Authors:
Robert Reid; NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI
|
| This article discusses leveraging test and evaluation (T&E) and training programs in the development, production, and installation of instrumented undersea ranges for the U.S. Navy and other customers. Enabling and leveraging of this capability also touches other non- Department of Defense arenas, such as the underwater tracking of marine mammals, with the same infrastructure that the U.S. Fleets use for undersea warfare test and training. This infrastructure includes an underwater ... |
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| A Variational Framework for Non-Local Image Inpainting |
Jun 2009 |
16 pages |
| Authors:
Pablo Arias; Vicent Caselles; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Non-local methods for image denoising and inpainting have gained considerable attention in recent years. This is in part due to their superior performance in textured images and regions, a known weakness of purely local methods. Local methods on the other hand have demonstrated to be very appropriate for the recovering of geometric structure such as image edges. The synthesis of both types of methods is a trend in current research. ... |
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| Seeing 3D Objects in a Single 2D Image |
Jun 2009 |
10 pages |
| Authors:
Diego Rother; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| A general framework simultaneously addressing pose estimation, 2D segmentation, object recognition, and 3D reconstruction from a single image is introduced in this paper. The proposed approach partitions 3D space into voxels and estimates the voxel states that maximize a likelihood integrating two components: the object fidelity, that is, the probability that an object occupies the given voxels, here encoded as a 3D shape prior learned from 3D samples of objects ... |
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| Exemplar-Based Interpolation of Sparsely Sampled Images |
Jun 2009 |
16 pages |
| Authors:
Gabriele Facciolo; Pablo Arias; Vicent Caselles; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| A nonlocal variational formulation for interpolating a sparsely sampled image is introduced in this paper. The proposed variational formulation, originally motivated by image inpainting problems, encourages the transfer of information between similar image patches, following the paradigm of exemplar-based methods. Contrary to the classical inpainting problem, no complete patches are available from the sparse image samples, and the patch similarity criterion has to be redefined as here proposed. Initial experimental ... |
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| A Literature Review on Operator Interface Technologies for Network Enabled Operational Environments Using Complex System Analysis |
30-May-2009 |
41 pages |
| Authors:
Ming Hou; Haibini Zhu; NIPISSING UNIV NORTH BAY (ONTARIO)
|
| A literature review was conducted to examine existing and potential advanced interface technologies for supervisory control of multiple heterogeneous assets (e.g., UAV swarming) in a NEO environment. These technologies include behavioural-based interface design approaches, physiological-based interface design approaches, and multi-agent interface design and implementation methodologies. The emphasis was on adaptive interfaces and intelligent agent system technologies. An analysis was conducted to compare differences between requirements of a NEO complex environment ... |
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| Center of Gravity Concept: Informed by the Information Environment |
18-May-2009 |
56 pages |
| Authors:
Joakim Karlquist; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
|
| The information sphere is an integral part of the current environment. The center of gravity (CoG) theory currently is matched for conventional, linear, industrial age warfare in the physical domain. The CoG concept is thus not suited to work in the fast changing information environment and needs revision. Nevertheless, the CoG concept is deeply ingrained in United States military doctrine. The CoG concept can be refined to be useful in ... |
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| Don't Forget the Cyber! Why the Joint Force Commander Must Integrate Cyber Operations Across Other War Fighting Domains, and How a Joint Forces Cyberspace Component Commander Will Help |
04-May-2009 |
31 pages |
| Authors:
Martin Stallone; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| Amidst a geometric increase in the interconnectedness of our world, the official Department of Defense definition calls cyberspace a global domain in which all military departments and combatant commands need to operate unimpeded. Despite the operational implications of this statement, there is little published research about how the current Unified Command Plan affects the integration of cyber operations with actions in other domains in the geographic commands. This paper finds ... |
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| Counterinsurgency and Robots: Will the means Undermine the Ends? |
04-May-2009 |
28 pages |
| Authors:
Samuel N Deputy; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| The recent introduction of unmanned and robotic systems into counterinsurgency (COIN) operations has created marked advantages at the tactical level of operations. Despite tactical advantages created by increasing capabilities and presence on the battlefield, unmanned and robotic systems produce a collective operational impact that increases risk. The operational risk assumed by commanders charged with conducting COIN is a result of unknown variables and side effects generated by the interaction of ... |
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| Performance Moderated Functions Server's (PMFserv) Military Utility: A Model and Discussion |
May-2009 |
30 pages |
| Authors:
Daniel N Cassenti; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
|
| The Performance Moderated Functions Server (PMFserv) modeling system is a structure designed to model the behavior of agents that are simulated based on established psychological principles. First, I detail the properties and principles of PMFserv, and then compare PMFserv to other prominent modeling. Based on these comparisons, PMFserv demonstrates a unique modeling skill set that may be of interest to U.S. Army research, and its limitations may be overcome through ... |
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| Storing and Predicting Dynamic Attributes in a World Model Knowledge Store |
May-2009 |
191 pages |
| Authors:
Daniel A Kent; FLORIDA UNIV GAINESVILLE MECHANICAL AND AEROSPACE ENGINEERING
|
| The world is an ever-changing, dynamic environment. If robots and other intelligent systems are to find ways to cope with and reason about the world adequately, they must be capable of understanding these dynamic features. This dissertation examines the need for a centralized knowledge store capable of storing information that is both spatial and temporal in nature. The interface of a new and unique architecture to handle the exchange of ... |
|
| Finite Set Control Transcription for Optimal Control Applications |
May-2009 |
260 pages |
| Authors:
Stuart A Stanton; TEXAS UNIV AT AUSTIN
|
| An enhanced method in optimization rooted in direct collocation is formulated to treat the finite set optimal control problem. This is motivated by applications in which a hybrid dynamical system is subject to ordinary differential continuity constraints, but control variables are contained within finite spaces. Resulting solutions display control discontinuities as variables switch between one feasible value to another. Solutions derived are characterized as optimal switching schedules between feasible control ... |
|
| High Frontier, The Journal for Space & Missile Professionals. Volume 5, Number 3 |
May 2009 |
53 pages |
| Authors:
AIR FORCE SPACE COMMAND PETERSON AFB CO
|
| High Frontier, Air Force Space Command's space professional journal, is published quarterly. The journal provides a scholarly forum for professionals to exchange knowledge and ideas on space-related issues throughout the space community. The journal focuses primarily on Air Force and Department of Defense space programs; however, the High Frontier staff welcomes submissions from within the space community. |
|
| Multiple q-Shell ODF Reconstruction in q-Ball Imaging |
May 2009 |
10 pages |
| Authors:
Iman Aganj; Christophe Lenglet; Guillermo Sapiro; Essa Yacoub; Kamil Ugurbil; Noam Harel; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Q-ball imaging (QBI) is a high angular resolution diffusion imaging (HARDI) technique which has been proven very successful in resolving multiple intravoxel fiber orientations in MR images. The standard computation of the orientation distribution function (ODF, the probability of diffusion in a given direction) from q-ball uses linear radial projection, neglecting the change in the volume element along the ray, thereby resulting in distributions different from the true ODFs. A ... |
|
| Sparse Representation for Computer Vision and Pattern Recognition |
May 2009 |
12 pages |
| Authors:
John Wright; Yi Ma; Julien Mairal; Guillermo Sapiro; Thomas Huang; Shuicheng Yan; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Techniques from sparse signal representation are beginning to see significant impact in computer vision, often on non-traditional applications where the goal is not just to obtain a compact high-fidelity representation of the observed signal, but also to extract semantic information. The choice of dictionary plays a key role in bridging this gap: unconventional dictionaries consisting of, or learned from, the training samples themselves provide the key to obtaining state-of-the art ... |
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| Simultaneous Object Classification and Segmentation with High-Order Multiple Shape Models |
May 2009 |
12 pages |
| Authors:
Federico Lecumberry; Alvaro Pardo; Guillermo Sapiro; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| Shape models (SMs), capturing the common features of a set of training shapes, represent a new incoming object based on its projection onto the corresponding model. Given a set of learned SMs representing different objects classes, and an image with a new shape, this work introduces a joint classification-segmentation framework with a twofold goal. First, to automatically select the SM that best represents the object, and second, to accurately segment ... |
|
| Joint Collaborative Technology Experiment |
17-Apr-2009 |
15 pages |
| Authors:
Brian Skibba; Gary N Dion; Randy J Shirts; Danies Class; Rodney Brown; John Messamore; See Yee; Donny Ciccimaro; Michael Wills; Jeff Wit; Thomas Denewiler; Nicholas Stroumtsos; Gary S Anselmo; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| Use of unmanned systems is rapidly growing within the military and civilian sectors in a variety of roles including reconnaissance, surveillance, explosive ordinance disposal (EOD), and force-protection and perimeter security. As utilization of these systems grows at an ever increasing rate, the need for unmanned systems teaming and inter-system collaboration becomes apparent. Collaboration provides a means of enhancing individual system capabilities through relevant data exchange that contributes to cooperative behaviors ... |
|
| Integration of Hardware-in-the-loop Facilities Over the Internet |
15-Apr-2009 |
58 pages |
| Authors:
Wilford Smith; Jarrett Goodell; Mark J Brudnak; ARMY TANK-AUTOMOTIVE RESEARCH AND DEVELOPMENT CENTER WARREN MI
|
| This briefing discusses a hardware in loop vehicle simulator in Warren, Michigan that provides the driver with realistic power response from the Power and Energy Systems Integration Lab over the internet. |
|
| Portable Language-Independent Adaptive Translation From OCR |
15-Apr-2009 |
5 pages |
| Authors:
Prem Natarajan; BBN TECHNOLOGIES CAMBRIDGE MA
|
| This is the sixth R&D quarterly progress report (QPR) of the BBN-led team under DARPA's MADCAT program. This report is organized by technical task area. The following tasks were performed this quarter: 1.1. Pre-Processing and Page Segmentation - Text Segmentation and Verification; Shape-DNA based Handwritten Text Line Detection; Text line detection and separation. 1.2. Text Recognition - Error Analysis; Training with Phase 2 Data; Unsupervised Scribe Adaptation; Named Entity Detection ... |
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| 2-Player Game With Uncertainty to Protect Mission Critical Information Over Blue Networks |
Apr-2009 |
21 pages |
| Authors:
Sarah L Muccio; Claire Maxey; Jennifer Nash; AIR FORCE RESEARCH LAB ROME NY INFORMATION DIRECTORATE
|
| This project uses game theory to develop a non-cooperative game with a defender and an intruder. The defender attempts to protect critical information on his system using the available resources efficiently while the intruder seeks to obtain that information without being detected by the defender. This defender will defend using a different combination of only three defensive resources: encryption, distributed data, and fake honeypots. By quantifying each defense, a cost ... |
|
| Test Results of Autonomous Behaviors for Urban Environment Exploration |
Apr-2009 |
16 pages |
| Authors:
H R Everett; G Ahuja; B Sights; D Fellars; G Pacis Kogut; E Rius; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| Under various collaborative efforts with other government labs, private industry, and academia, SPAWAR Systems Center Pacific (SSC Pacific) is developing and testing advanced autonomous behaviors for navigation, mapping, and exploration in various indoor and outdoor settings. As part of the Urban Environment Exploration project, SSC Pacific is maturing those technologies and sensor payload configurations that enable man-portable robots to effectively operate within the challenging conditions of urban environments. For example, ... |
|
| Evolving U.S. Department of Defense (DoD) Unmanned Systems Research, Development, Test, Acquisition & Evaluation (RDTA&E) |
Apr-2009 |
9 pages |
| Authors:
Robin T Laird; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| As research, development, test, acquisition and evaluation (RDTA&E) of unmanned systems experiences increased attention by the Department of Defense (DoD), elements within the acquisition community are responding by mapping out changes to management systems, including fundamental policy shifts, to support the expanding role of robots on the battlefield. Unmanned systems - air, land, and sea - are increasing in complexity and capability such that their use is becoming pervasive in ... |
|
| Portable Language-Independent Adaptive Translation from OCR. Phase 1 |
Apr-2009 |
26 pages |
| Authors:
Prem Natarajan; BBN TECHNOLOGIES CAMBRIDGE MA
|
| The objective of MADCAT is to produce a robust, highly accurate transcription engine that ingests documents of multiple types and produces English transcriptions of their content. For addressing the technical challenges implicit in that goal, the BBN-led team proposed a system that embodies integration of five major operations: (1) pre-processing and image enhancement, (2) page segmentation, (3) text recognition, and (4) metadata extraction. In Phase 1 of the MADCAT effort, ... |
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| Representation and Analysis of Probabilities Intelligence Data (RAPID) |
Apr-2009 |
27 pages |
| Authors:
Eugene Fink; Jaime G Carbonell; Anatole Gershman; Ganesh Mani; Dwight Dietrich; CARNEGIE-MELLON UNIV PITTSBURGH PA
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| Tools were developed for the representation and analysis of uncertainty in INTEL data and targeted uncertainty reduction. The purpose is to help INTEL analysts answer these questions: 1) What hypotheses can be validated/refuted based on available uncertain data and at what level of certainty? 2) What missing data is critical for verifying or refuting given hypotheses and increasing the certainty of current conclusions? 3) What are the tradeoffs between the ... |
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Cybernetics
