There have been several algorithms proposed for multisensor tracking of multiple objects using a centralized processing architecture, but because of considerations such as reliability, survivability, and communication...
详细信息
Battelle is developing a real-time multispectral imaging and classification system which can be taken into the field to support automated target/background discrimination. The system consists of a passive, multispectr...
详细信息
ISBN:
(纸本)0780318935
Battelle is developing a real-time multispectral imaging and classification system which can be taken into the field to support automated target/background discrimination. The system consists of a passive, multispectral imaging electro-optical sensor suite and a real-time digital data collection and data infusion image processor. The implemented algorithms include unsupervised maximum likelihood, Linde Buzo Gray, and fuzzy clustering algorithms along with Multilayer Perceptron and Learning Vector Quantization neural networks. Supervised clustering of the data was also used. Meanwhile, the system also has applications in environmental remote sensing, industrial inspection and medical imaging.
An unsupervised learning artificial neural network, DIGNET, is used to design a multi-sensor data fusion system. DIGNET is a self-organizing neural network model with its system parameters analytically determined from...
详细信息
An unsupervised learning artificial neural network, DIGNET, is used to design a multi-sensor data fusion system. DIGNET is a self-organizing neural network model with its system parameters analytically determined from self-organization during the learning process. The fast and stable clustering of DIGNET on statistical pattern recognition is used to supplement the decision making on multi-sensor detection problems. Features of the received signals are extracted by using signal processing techniques at each sensor stage before presented to data fusion. The data fusion architecture consists of DIGNET models and decision making algorithms. The function of DIGNET is to perform feature clustering prior to data fusion. The clusters of features created by DIGNET are fused by a decision making algorithm for an integrated decision. Experimental results in a multi-sensor moving target indication system show that data fusion with DIGNET successfully detects and tracks multiple moving targets embedded in clutter.
This paper describes applications of Maximum Likelihood Adaptive Neural System (MLANS) to the characterization of clutter in IR images and to the identification of targets. The characterization of image clutter is nee...
详细信息
An unsupervised learning artificial neural network, DIGNET, is used to design a multi-sensor data fusion system. DIGNET is a self-organizing neural network model with its system parameters analytically determined from...
详细信息
An unsupervised learning artificial neural network, DIGNET, is used to design a multi-sensor data fusion system. DIGNET is a self-organizing neural network model with its system parameters analytically determined from self-organization during the learning process. The fast and stable clustering of DIGNET on statistical pattern recognition is used to supplement the decision making on multi-sensor detection problems. Features of the received signals are extracted by using signal processing techniques at each sensor stage before presented to data fusion. The data fusion architecture consists of DIGNET models and decision making algorithms. The function of DIGNET is to perform feature clustering prior to data fusion. The clusters of features created by DIGNET are fused by a decision making algorithm for an integrated decision. Experimental results in a multi-sensor moving target indication system show that data fusion with DIGNET successfully detects and tracks multiple moving targets embedded in clutter.
Battelle scientists are involved in the development of a real-time multispectral imaging and classification system which can be taken into the field to support automated target/background discrimination. The system al...
详细信息
Battelle scientists are involved in the development of a real-time multispectral imaging and classification system which can be taken into the field to support automated target/background discrimination. The system also has applications in environmental remote sensing, industrial inspection and medical imaging. The Battelle-developed system consists of a passive, multispectral imaging Electro-Optical (E-O) sensor suite and a real-time digital data collection and data fusion image processor. The E-O sensor suite, able to collect imagery in 12 distinct wavebands from the ultraviolet (UV) through the long wave infrared (LWIR), consists of five charge-coupled device (CCD) cameras and two thermal IR imagers integrated on a common platform. The data collection and processing system consists of video switchers, recorders and a real-time sensorfusion/classification hardware system which takes any three wavebands as input and fuses the bands together by applying look-up tables, derived from tailored neural network algorithms, to classify the scene. The result is then visualized in a video format on a full color, 9-inch, active matrix Liquid Crystal Display (LCD). A variety of classification algorithms including artificial neural networks and data clustering techniques were successfully optimized to perform pixel-level classification of imagery in complex scenes. The optimized classification algorithm is used to populate the look-up tables in the real-time sensorfusion board for use in the field.< >
Near-simultaneous, multispectral, coregistered imagery of ground target and background signatures were collected over a full diurnal cycle in the MWIR, LWIR, near-infrared, blue, green, and red wavebands using Battell...
详细信息
ISBN:
(纸本)0819412015
Near-simultaneous, multispectral, coregistered imagery of ground target and background signatures were collected over a full diurnal cycle in the MWIR, LWIR, near-infrared, blue, green, and red wavebands using Battelle's portable sensor suite. The imagery data were processed with classical statistical algorithms and artificial neural networks to discriminate target signatures from background clutter and investigate automatic target detection and recognition schemes.
Following the acceptance of the linear Gauss Markov paradigm pioneered by Kalman, the engineering practice for the design of target tracking applications had been maturing over the last two decades. In recent years ho...
详细信息
ISBN:
(纸本)0819411914
Following the acceptance of the linear Gauss Markov paradigm pioneered by Kalman, the engineering practice for the design of target tracking applications had been maturing over the last two decades. In recent years however two emerging facts have called for a renewed attention from the research community: (1) the generalization of multiple sensorarchitectures, motivated by higher requirements in terms of target description and robustness to electronic warfare, and (2) the availability of affordable imaging sensors, following progress in infrared detectors technology. The purpose of this communication is to report on some recent work addressing the issues raised by these two new aspects of tracking application design. Ideas are illustrated using an air defense scenario.
The computer vision literature describes many methods to perform obstacle detection and avoidance for autonomous or semi-autonomous vehicles. Methods may be broadly categorized into field-based techniques and feature-...
详细信息
ISBN:
(纸本)0819411922
The computer vision literature describes many methods to perform obstacle detection and avoidance for autonomous or semi-autonomous vehicles. Methods may be broadly categorized into field-based techniques and feature-based techniques. Field-based techniques have the advantage of regular computational structure at every pixel throughout the image plane. Feature-based techniques are much more data driven in that computational complexity increases dramatically in regions of the image populated by features. It is widely believed that to run computer vision algorithms in real time a parallel architecture is necessary. Field-based techniques lend themselves to easy parallelization due to their regular computational needs. However, we have found that field-based methods are sensitive to noise and have traditionally been difficult to generalize to arbitrary vehicle motion. Therefore, we have sought techniques to parallelize feature-based methods. This paper describes the computational needs of a parallel feature-based range-estimation method developed by NASA Ames. Issues of processing-element performance, load balancing, and data-flow bandwidth are addressed along with a performance review of two architectures on which the feature-based method has been implemented.
The Australian Defence Science and Technology Organization is developing a single-platform sensorfusion testbed based around an experimental X-band generic pulse Doppler radar. Initial research will examine real-time...
详细信息
ISBN:
(纸本)0818641207
The Australian Defence Science and Technology Organization is developing a single-platform sensorfusion testbed based around an experimental X-band generic pulse Doppler radar. Initial research will examine real-time fusion of amplitude monopulse radar azimuth and elevation and video position estimates and the tracking ability of the combined sensor system. The addition of further signal processing and sensors will allow experimental verification of a variety of sensorfusion and management algorithms. Examples of preliminary data are shown and the continuing development of the test-bed and its applications are discussed.
暂无评论