<>Online access to Slides Database Management System:
http://lincpc04.cacs.louisiana.edu/cgi-bin/aladdin/nwrcslides/index.htm
<>Power Point Presentation on Slide Database System
http://www.cacs.louisiana.edu/~ahafez/demos/slide-db.ppt
Web to Bayou Periodical Index (WBPI) [ELR98]
The system enhances the search capabilities of legacy internet
resources (e.g. old-style pre-existing resources developed prior to the
advent of more modern methods). Two approaches are modeled and
implemented. The first approach uses structured databases and the other
approach uses HTML documents enhanced with content tags that are managed
by the Isite retrieval engine.
Both implementations enable users to specify search terms in particular
fields of the resource in order to obtain only that small portion of the
resource that match the specified search field values. The URL below is
for the approach based on creating a structured DB. We use Pro-C, CGI
programs and Oracle DB.
http://www.ucs.louisiana.edu/cgi-bin/vvrres/bayou/bayou.cgi
Aerial Photography Index System
The
Aerial Photography Index System includes a search engine that allows an
Internet user of the RAC's aerial photography website (file:///V:/Program%20Files/Apache%20Group/Apache2/htdocs/www.rac.louisiana.edu)
to search for aerial photographs by place name, by longitude and latitude,
or by the photograph's roll and frame number. The development of the
search engine entailed the development of an internet link to the
Geographic Names Information System (GNIS) developed by the Census Bureau
and maintained by the USGS to retrieve the geographic coordinates for
place name specified in a user query. The system uses a metadata file with
the corner coordinates for each frame of aerial photography to determine
the match between coordinates returned by the GNIS and the aerial
phtographies stored in our website. Future plans include the development
of a map based search interface that will allow the user to click on an
area of a map and retrieve the photography covering that region, along
with the capability to retrieve all frames of aerial photography within an
arbitrary region that a user can sketch.
Multiple demonstrations of the Aerial Photography Indexing System have
been provided to the USGS-National Mapping Division, Louisiana Geographic
Information Council (LAGIC), USGS-National Wetlands Research Center,
Louisiana State Foresters Annual Meeting, Eros Data Center, Louisiana
Department of Natural Resources, and at the 15th Annual Louisiana Remote
Sensing/GIS Workshop. In accordance with the Aerial Photography Index
System, the EE-IR Center's GIS Specialist has developed metadata for the
aerial photography within the system. These data are then served online
with the photographs via the EE-IR Center metadata repository.
Java and CGI are used in the implementation of the Aerial Photography
Index System.
<>Power Point Presentation on Aerial Photography Indexing System
http://www.louisiana.edu/~ahafez/demos/gnis.ppt
Meta-Data Conversion system
The
Metadata Converter/Crawler System is designed to translate metadata
from the Federal Geographic Data Committee standard to the MARC21
and XML/RDF standards (with an ISO mapping coming in a later stage of
development). The importance of conversion lies in producing a standard
representation for heterogeneous metadata formats to enable better
classification quality and search performance for Web content management.
By extracting the semantic content of the metadata records and
transforming it automatically into other formats, our process greatly
increases the value of the original, high quality resources. In addition,
our system builds in a mechanism for tracking and managing online linkages
back to the original full metadata record by way of persistent uniform
resource locators. Once records are registered with our converter, they
are then indexed automatically with a web crawler for inclusion in our
global metadata search engine. Taken as a whole, our system is a
comprehensive alternative to the existing Z39.50-based FGDC Clearinghouse
model managed by the U.S. government. The system is implemented using C,
Java, and CGI.
Online access to the Converter
http://cuadra.nwrc.gov/converter
Power Point Presentation for Meta-Data Conversion System
http://www.louisiana.edu/~ahafez/demos/convert.ppt
Web to Database System(WDB)
The system is
an enhanced version of a general purpose tool for linking tables in a
relational database system to the Web, for searching via standard Web
browsers. NWRC has two bibliographic databases stored as a MiniSQL DB that
are provided Web access by means of this software: Wetlands Values
Database and Duckdata, a waterfowl and wetlands information database. The
user-interface has been enhanced to allow more versatile query
specifications. Also, some update functions are added. WDB was written in
Perl.
http://www.nwrc.gov/duckdata/duckdata.html
http://cuadra.nwrc.gov/cgi-bin/wetvalues/form.pl
Catalog Acquisition and Search Tool
(CAST)
This is a search engine for electronic product
catalogs on the internet. The system is designed and developed to access
multiple catalogs from multiple distributors of a given class of products.
It is assumed that the critical information that needs to be indexed
appears in an HTML document in a tabular form. The needed catalog pages
are downloaded to our site and enhanced by the (automatic) insertion of
content tags. This downloading is carried out by our own extension of a
public domain spider, called the MOM-Spider.
Flexible searches of the catalogs are made possible by using the Isite
retrieval engine called ISITE, which is capable of exploiting the content
tags that have been inserted into the HTML catalogs. We also enhance ISITE
with a concept based retrieval capability (using ideas described in
the CS3
project). Most of the programming or software modifications we did
involves the Perl language.
An
Image Retrieval System that enables the retrieval of images by content.
Depending on the color contents of the query image, the system retrieves
images that are closest to an image from the database chosen as the query.
The goal of this work is to improve the efficiency of content based image
retrieval by using what we call an Estimated Distance, rather than the
more expensive Real Distance that users would prefer to adopt. The
improvement in efficiency will yield the benefit that the system can deal
with an image database consisting of a very large number of images. The
current demo shows that, for a chosen small collection of images, the
Estimated Distance based on color indeed allows the user to find the
images in the "right" order. Java and CGI are used to implement this
system.
Personalizing the Web Page of EE-IR
center
NWRC is developing an organization-specific portal
that channelizes information from various information resources. Users
accessing the EE-IR center's Home page may be interested in displaying
only parts of the information contained in some channels (sub-channels).
In this system, we provide a tool that is used to tailor different
views of the information on EE-IR center's Home page. The tool is enhanced
with an interface that allows those users accessing the EE-IR center's Web
page, to personalize and customize the layout and channels/sub-channels of
the information provided by the EE-IR center.
The system is implemented using Javascript, Pro C, CGI, and Oracle.
Power Point Presentation:
http://www.cacs.louisiana.edu/~ahafez/demos/personalize.ppt
Project Management Tool
Project
Management Tool is a web based tool that lets users track progress of
various projects. It is fully integrated, web-enabled tool that helps in
efficient monitoring of the projects and searching for the details of a
single or multiple projects. The functionalities of this tool includes
browsing through the existing projects, searching by the fields of team
members or project title or date, adding new project, and updating the
information for each project. This software helps in project planning,
tracking the projects, and multi project management. Security is provided
through limited access for searching/browsing the data, and adding
information to the projects.
Detailed and timely updation of each project's information helps in
keeping track of the team members involved, the status of the project, the
location, implementation ideas, software used and the summary of each
project. Further advantages of this tool can be in analyzing the project
progress versus the initial planning. It can also helps in assigning the
resources to the projects, and depending on a person's availability
reschedule the person to a different project.
C and CGI are use to implement the system.
References
[ChRa97a]
S. K. Choubey
and V. V. Raghavan. Generic and fully automatic content based image
retrieval architecture. In Proc. of the 12th International Symposium on
Methodologies for Intelligent Systems, Charlotte, NC, Oct. 1997. document.
[ChRa97b]
S. K. Choubey and V. V. Raghavan.
Generic and fully automatic content based image retrieval using texture.
In International Conf. on Imaging Science, Systems, and Technology, pages
228--237, Las Vegas, NV, June- July 1997. document.
[ChRa97c]
S. K. Choubey and V. V. Raghavan.
Generic and fully automatic content-based image retrieval using color.
Pattern Recognition Letters, 18:1233--1240, Nov. 1997. document.
[ELR98]
M. C. Erie, S. M. LeBlanc, and V. V.
Raghavan. Enhancing search capabilities of legacy internet resources. In
InForum 98- Science at the Desktop: Synergy through Sharing, Oak Ridge,
TN, May 1998.
[LJRT99]
F. Lu, T. D. Johnsten, V. V. Raghavan,
and D. Traylor. Enhancing internet search engines to achieve concept-based
retrieval. In InForum'99-Improving the Visibility of R & D
Information, Oak Ridge, TN, May 1999.