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Historical Aerial Photography CD Rom 1988 The above statewide graphic
Photo Index was prepared using GIS software (ESRI ArcView) and RIGIS data.
The images for 1988 are contained on one CDROM. Computer viewing software
provided on this CDROM is courtesy of LizardTech Inc. of Seattle, Washington,
U.S.A. A separate photoindex in html
format for the CDROM are linked to corresponding images for Rhode Island. To
view the linked images install the provided MrSID_GeoViewer_setup.exe
software and open the HTML document. Then click on any index box to view the corresponding
image. Index numbers were
derived from a combination of the flight line and photo number for each original
photograph. Photo index outline limits are approximate. Aerial photography in Rhode Island for 1988 was
captured for Rhode Island Solid Waste Management Corp. by Aero Graphics Corp.
Bohemia, N.Y. The original
photography used for this project consisted of approximately 441- 9” X 9”
photographs produced using standard airborne photogrammetric techniques
between April 13 and May 4,1992.
Actual dates along with a photo identification number were imprinted
on each of the photographs.
Approximately every other image was used to create the 1992 indexes,
utilizing 217 images. For this
project one-index CDROM products have been produced, providing full coverage
for the state. Scanning of the original photopositive images was done by an intern from Rhode Island College (RIC) at the Statewide Planning Offices in Providence in February of 2004. Reduction of the scanned product to TIF image file format, and compression to MrSID images was also completed by an intern from RIC at the Statewide Planning Offices. Individual prints were scanned on flat bed scanners using commercially available software and microcomputers with MSWindow operating systems. The scanning rate selected was 400 dots per inch (dpi) with 8 bit gray (standard) and software default settings selected. Resulting scanned images were saved to Tagged Image File (tif) format. The tif images were then compressed at a 5:1 ratio with LizardTech MrSID Geospatial Encoder 1.4 and saved with file names corresponding to the same photo numbers imprinted on the photos. Indexing and transfer of data to CDROM media was conducted at the Rhode Island Department of Administration, Statewide Planning Program by state employees in February & March 2004.The Photo Index was prepared using GIS software (ESRI ArcView) and RIGIS data. Photo numbers were derived from a combination of the flight line and photo number of each original photograph. Photo outline limits are approximate. You may want to use another image viewing software package already installed on your computer to view this index as a JPEG image. The corresponding image file index001.jpg can be found in the file folder PhotoIndex_files. Software For
those who are not already GIS users or who lack the specialized software
required for extended GIS analysis, we have included Lizardtech's MrSID
GeoViewer. This program is also available for free over the world wide web
and can be accessed at http://www.lizardtech.com/.
Please consult the accompanying license for any questions concerning this
program's usage. If
you do not already have Arcview or another application that supports the
MrSID image format, you will need to install the MrSID GeoViewer software on your
computer. MrSID
GeoViewer is a very small installation. It requires only the following: Windows
Power
Macintosh
Additionally, please note
that ESRI's Arcexplorer
(2.0) supports the MrSID image format. Arcexplorer is a free GIS data viewer
available from ESRI. For information about
other GIS and image processing software with which to view MrSID images,
please see http://www.lizardtech.com/.
About RIGIS The
Rhode Island Geographic Information System (RIGIS) is a consortium of
government and private organizations employing computer and communications
technology to manage and use a collective database of comprehensive
geographically related information. The mission of the RIGIS is to monitor,
coordinate, and provide leadership for activities related to the use of GIS
technology within Rhode Island, to support initiatives to implement or use
the technology, and to manage and provide access to a common database of
geographically referenced information. The
RIGIS database is maintained on a server at the University of Rhode Island's
Kingston Campus, and at the Rhode Island Department of Administration in
Providence. The Environmental Data Center within the Department of Natural
Resource Sciences at the University provides on line access (web-browser
only) to most RIGIS data via the Internet at http://www.edc.uri.edu/RIGIS. Data
can also be provided on magnetic and optical media by request from the RIGIS
coordinator at the RI Department of Administration's Statewide Planning
program at rigis@admin.ri.gov. RIGIS
data are copyright protected and licensed for use by the RI Board of
Governors for Higher Education. Restrictions include prohibiting the secondary
distribution of RIGIS data without prior written approval. RIGIS Contact Information: John Stachelhaus-RIGIS
Coordinator email: rigis@admin.ri.gov telephone: (401) 222-6483 |