Author: James G. Wieler
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 56
Book Description
A storm tracking algorithm designed to detect and track fine structure in digitized radar data is evaluated. These fine structures are defined by regions containing values within 3 dB of peaks in reflectivity factor. The algorithm describes storm structure and evolution by correlating these peak regions in time and space. The evaluation consists of a comparison of the algorithm output with raw data and with output from an AFGL algorithm which detects and tracks three-dimensional reflectivity weighted centroids defined by a preselected threshold. It is concluded that the algorithm cannot reliably detect and track significant structures within storms when applied to data sets with a temporal resolution of aprox. 6 min and a spatial resolution of 1.0 deg in azimuth and 0.7 deg in elevation. The significance of tracking 3 dB peaks is questioned and the implication of defining a larger peak threshold is discussed. The algorithm does track the large features of storms with results similar to the AFGL algorithm. However, it does not run in real time and is not modular, unlike the AFGL algorithm.
An Evaluation of an Automatic Cell Detection and Tracking Algorithm
Author: James G. Wieler
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 56
Book Description
A storm tracking algorithm designed to detect and track fine structure in digitized radar data is evaluated. These fine structures are defined by regions containing values within 3 dB of peaks in reflectivity factor. The algorithm describes storm structure and evolution by correlating these peak regions in time and space. The evaluation consists of a comparison of the algorithm output with raw data and with output from an AFGL algorithm which detects and tracks three-dimensional reflectivity weighted centroids defined by a preselected threshold. It is concluded that the algorithm cannot reliably detect and track significant structures within storms when applied to data sets with a temporal resolution of aprox. 6 min and a spatial resolution of 1.0 deg in azimuth and 0.7 deg in elevation. The significance of tracking 3 dB peaks is questioned and the implication of defining a larger peak threshold is discussed. The algorithm does track the large features of storms with results similar to the AFGL algorithm. However, it does not run in real time and is not modular, unlike the AFGL algorithm.
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 56
Book Description
A storm tracking algorithm designed to detect and track fine structure in digitized radar data is evaluated. These fine structures are defined by regions containing values within 3 dB of peaks in reflectivity factor. The algorithm describes storm structure and evolution by correlating these peak regions in time and space. The evaluation consists of a comparison of the algorithm output with raw data and with output from an AFGL algorithm which detects and tracks three-dimensional reflectivity weighted centroids defined by a preselected threshold. It is concluded that the algorithm cannot reliably detect and track significant structures within storms when applied to data sets with a temporal resolution of aprox. 6 min and a spatial resolution of 1.0 deg in azimuth and 0.7 deg in elevation. The significance of tracking 3 dB peaks is questioned and the implication of defining a larger peak threshold is discussed. The algorithm does track the large features of storms with results similar to the AFGL algorithm. However, it does not run in real time and is not modular, unlike the AFGL algorithm.
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
The Lincoln Laboratory Journal
Author:
Publisher:
ISBN:
Category : Electronics
Languages : en
Pages : 556
Book Description
Publisher:
ISBN:
Category : Electronics
Languages : en
Pages : 556
Book Description
Accessions List
Author: United States. National Environmental Satellite, Data, and Information Service. Library and Information Services Division
Publisher:
ISBN:
Category :
Languages : en
Pages : 606
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 606
Book Description
Accessions List
Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 16
Book Description
Accessions List
Author: Assessment and Information Services Center (U.S.). Library and Information Services Division
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 606
Book Description
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 606
Book Description
Biomedical Image Analysis
Author: Rangaraj M. Rangayyan
Publisher: CRC Press
ISBN: 0203492544
Category : Medical
Languages : en
Pages : 1312
Book Description
Computers have become an integral part of medical imaging systems and are used for everything from data acquisition and image generation to image display and analysis. As the scope and complexity of imaging technology steadily increase, more advanced techniques are required to solve the emerging challenges. Biomedical Image Analysis demonstr
Publisher: CRC Press
ISBN: 0203492544
Category : Medical
Languages : en
Pages : 1312
Book Description
Computers have become an integral part of medical imaging systems and are used for everything from data acquisition and image generation to image display and analysis. As the scope and complexity of imaging technology steadily increase, more advanced techniques are required to solve the emerging challenges. Biomedical Image Analysis demonstr
Meteorological and Geoastrophysical Abstracts
Author:
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 922
Book Description
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 922
Book Description
The Impact of Weather on Aviation Safety
Author: United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Investigations and Oversight
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 732
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 732
Book Description
Image Analysis and Recognition
Author: Aurélio Campilho
Publisher: Springer Science & Business Media
ISBN: 3642137741
Category : Computers
Languages : en
Pages : 465
Book Description
This book constitutes the thoroughly refereed proceedings of the 7th International Conference, ICIAR 2010, held in Póvoa de Varzin, Portugal in June 2010. The 88 revised full papers were selected from 164 submissions. The papers are organized in topical sections on Image Morphology, Enhancement and Restoration, Image Segmentation, Featue Extraction and Pattern Recognition, Computer Vision, Shape, Texture and Motion Analysis, Coding, Indexing, and Retrieval, Face Detection and Recognition, Biomedical Image Analysis, Biometrics and Applications
Publisher: Springer Science & Business Media
ISBN: 3642137741
Category : Computers
Languages : en
Pages : 465
Book Description
This book constitutes the thoroughly refereed proceedings of the 7th International Conference, ICIAR 2010, held in Póvoa de Varzin, Portugal in June 2010. The 88 revised full papers were selected from 164 submissions. The papers are organized in topical sections on Image Morphology, Enhancement and Restoration, Image Segmentation, Featue Extraction and Pattern Recognition, Computer Vision, Shape, Texture and Motion Analysis, Coding, Indexing, and Retrieval, Face Detection and Recognition, Biomedical Image Analysis, Biometrics and Applications