RIGIS03/04 Digital Orthophotos of Rhode Island 2003-2004

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Chas. H. Sells Inc
Originator: Rhode Island Department of Transportation
Originator: Rhode Island Geographic Informaiton System
Publication_Date: 20051115
Title: RIGIS03/04 Digital Orthophotos of Rhode Island 2003-2004
Geospatial_Data_Presentation_Form: remote sensing image
Online_Linkage: <http://www.rigis.org>
Description:
Abstract:
An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. For this dataset, the natural color orthoimages were produced at 2 foot pixel resolution. Each compressed and mosaiced orthoimage provides imagery for a 20000- by 20000-foot block on the ground. The original projected coordinate system was the Rhode Island State Plane Coordinate System in U.S. Survey feet by RIGIS. There is no image overlap been adjacent files. Images as originally provided were from 1:30000 flight photo scale and reduced to 1:5000 image scale following the scanning and orthorectification process. Map accuracy for 1:5000 scale is plus or minus 3-5 meters. As packaged on CD-ROM media by RIGIS there are three CDs containing the RIGIS03/04 image data set with some overlap to capture entire town areas on one CD. There are 41 year 2003 images on RIGIS03east; 40 year 2004 images and 5 overlapping 2003 images on RIGIS04South; and 36 year 2004 images and 14 overlapping 2003 images on RIGIS04North. Each compressed mosaiced image in MrSID MG3 format is about 11.75 megabytes in size. When reverted back to full TIF images, a corresponding 4 square mosaic size is about 300 megabytes.
Purpose:
These data have been created as a result of the need for having geospatial data in the form of orthoimagery available for transportation infrastructure inventory and planning.
Supplemental_Information:
Map accuracy for 1:5000 scale is plus or minus 3-5 meters. Since part of the facility to users with computer software is an ability to zoom in or blow up these images and compare them with other data, these accuracy and resolution criteria must be kept in mind while using this product.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20030328
Single_Date/Time:
Calendar_Date: 20030414
Single_Date/Time:
Calendar_Date: 20040408
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.6352
East_Bounding_Coordinate: -71.6167
North_Bounding_Coordinate: 41.6344
South_Bounding_Coordinate: 41.6205
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: 2 foot orthoimage
Theme_Keyword: rectified photograph
Theme_Keyword: rectified image
Theme_Keyword: orthophoto
Theme_Keyword: natural color orthophoto
Theme_Keyword: orthoimage
Theme_Keyword: image map
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: US
Place_Keyword: Northeast
Place_Keyword: New England
Place_Keyword: Rhode Island
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: RI
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Providence, RI-MA
Access_Constraints: None.
Use_Constraints:
Users are requested to abide by the terms of the RIGIS license agreement. License terms include (1) restrictions on secondary distribution of these data, and (2) graphic displays and printed tabular listings derived from RIGIS data may be used in publications and presentations, provided that credit is given to RIGIS as the source of the information. Please review the RIGIS license agreement at <http://www.edc.uri.edu/rigis/license.html> for more information before accessing these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: RIGIS Coordinator
Contact_Organization: RI Department of Administration - DoIT
Contact_Position: RIGIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: RI Department of Administration - RIGIS
Address: One Capitol Hill
City: Providence
State_or_Province: RI
Postal_Code: 02908 5872
Country: US
Contact_Address:
Address_Type: mailing and physical address
Address: The Environmental Data Center
Address: The University of Rhode Island
Address: Coastal Center at Kingston
City: Kingston
State_or_Province: RI
Postal_Code: 02881
Country: US
Contact_Voice_Telephone: 401 222-6483
Contact_Voice_Telephone: 401 874-2180
Contact_Facsimile_Telephone: 401 222-6482
Contact_Electronic_Mail_Address: rigis@admin.ri.gov
Contact_Electronic_Mail_Address: greg@edc.uri.edu
Hours_of_Service: M-F 8-4 EST
Contact_Instructions: email preferred
Data_Set_Credit:
The Rhode Island Department of Transporatation and the Rhode Island Geographic Information System (RIGIS)
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Native_Data_Set_Environment: Digital Orthorectified Imagery
Cross_Reference:
Citation_Information:
Originator: Chas H Sells
Originator: Rhode Island Department of Trnasportation
Publication_Date: 20051128
Title: Digital Orthophotography of Rhode Island 2003 2004
Geospatial_Data_Presentation_Form: remote-sensing image
Other_Citation_Details: Native Tiff Images
Online_Linkage: 158.123.8.8
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
During photographic reproduction of the source photographs, limited analog dodging (radiometric editing) is performed to improve image quality. Analog dodging consists of holding back light from certain areas of the sensitized photographic material to avoid overexposure. The diapositive is inspected to ensure clarity and radiometric uniformity. Diapositive image brightness values are collected with a minimum of image quality manipulation. Image brightness values may deviate from the brightness values of the original images because of image value interpolation during the scanning and rectification processes. Radiometry is verified by visual inspection of the digital orthophoto with the original unrectified image to determine if the digital orthophoto has the same or better image quality as the original unrectified input image. Slight systematic radiometric differences can be detected between adjacent orthoimage files; these are due primarily to differences in source photograph capture dates and sun angles along flight lines when the aerial photographs were taken. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching.
Logical_Consistency_Report:
During photographic reproduction of the source photographs, limited analog dodging (radiometric editing) is performed to improve image quality. Analog dodging consists of holding back light from certain areas of the sensitized photographic material to avoid overexposure. The diapositive is inspected to ensure clarity and radiometric uniformity. Diapositive image brightness values are collected with a minimum of image quality manipulation. Image brightness values may deviate from the brightness values of the original images because of image value interpolation during the scanning and rectification processes. Radiometry is verified by visual inspection of the digital orthophoto with the original unrectified image to determine if the digital orthophoto has the same or better image quality as the original unrectified input image. Slight systematic radiometric differences can be detected between adjacent orthoimage files; these are due primarily to differences in source photograph capture dates and sun angles along flight lines when the aerial photographs were taken. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching.
Completeness_Report: Complete to publicaiton date
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The locations of surveyed ground control points were compared with their locations on the GeoTIFF images upon which each point appeared. The distance between the ground control point and the orthophoto location was used to calculate a project-wide RMSE value in ground units.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 2
Horizontal_Positional_Accuracy_Explanation:
The location of surveyed ground control points used were compared with their location on the GeoTIFF image upon which each point appeared. The difference in the ground location vs. the orthophoto location was used to calculate a project-wide RMSE value in ground units.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Chas H Sells Inc
Originator: RI Department of Administration
Originator: Rhode Island Geographic Information System
Originator: Rhode Island Department of Transportation
Publication_Date: 20051215
Title: RI Orthoimagery
Edition: 2003/2004
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Larger_Work_Citation:
Citation_Information:
Originator: Chas. H. Sells
Originator: Rhode Island Department of Transportation
Originator: Rhode Island Geographic Information System
Originator: Rhode Island Department of Administration - DoIT
Originator: The University of Rhode Island
Publication_Date: 20051115
Title: RIGIS0304 OrthoImagery
Edition: 2003-2004
Geospatial_Data_Presentation_Form: remote-sensing image
Online_Linkage: www.edc.uri.edu/rigis
Source_Scale_Denominator: 30000
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20030328
Single_Date/Time:
Calendar_Date: 20030414
Single_Date/Time:
Calendar_Date: 20040408
Source_Currentness_Reference: ground condition
Source_Contribution: Source imagery for ortho tile production
Process_Step:
Process_Description:
Ground control was from the RIGIS 1997 DEM data set augmented by Chas H Sells to support the accuracy requirements. AeroTriangulation was performed in a softcopy environment. Every exposure was triangulated to meet accuracy requirements. The original RIGIS97 DEMs were used as a base, and modified with additional breaklines where needed to meet the accuracy requirements, or where the terrain had changed.
Process_Date: 20051028
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\xmlAF.tmp
Process_Step:
Process_Description:
Original 10000X10000 foot tif image fies were compressed at a 25:1 compression ration and mosaiced into a four square tif to sid image tile MG3 file format with Lizardtech software
Process_Date: 20051128
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: RIGIS Coordinator
Contact_Organization: RI Department of Administration - RIGIS
Contact_Position: RIGIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: RI Department of Administration
Address: One Capitol Hill - RIGIS-
City: Providence
State_or_Province: RI
Postal_Code: 02908 5872
Country: US
Contact_Voice_Telephone: 401 222-6483
Contact_Facsimile_Telephone: 401 222-6482
Contact_Electronic_Mail_Address: rigis@admin.ri.gov
Hours_of_Service: M-F 8-4 EST
Cloud_Cover: 0 percent clouds
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 10000
Column_Count: 10000
Vertical_Count: 2
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 3800
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999994
Longitude_of_Central_Meridian: -71.500000
Latitude_of_Projection_Origin: 41.083333
False_Easting: 328083.333333
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 2
Ordinate_Resolution: 2
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000000000000000
Denominator_of_Flattening_Ratio: 298.25722210088
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Band_1
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Count
Detailed_Description:
Entity_Type:
Entity_Type_Label: Band_2
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Count
Detailed_Description:
Entity_Type:
Entity_Type_Label: Band_3
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Count
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Rhode Island Environmental Data Center
Contact_Person: Erica Tefft
Contact_Address:
Address_Type: mailing and physical
Address: 1 Greenhouse Road
City: Kingston
State_or_Province: RI
Postal_Code: 02881
Contact_Voice_Telephone: 401-874-5054
Contact_Electronic_Mail_Address: erica@edc.uri.edu
Contact_Instructions: email preferred
Distribution_Liability:
This dataset is provided 'as is.' The producer(s) of this dataset, contributors to this dataset, the Rhode Island Geographic Information System (RIGIS) consortium, the State of Rhode Island, and the University of Rhode Island do not make any warranties of any kind for this dataset, and are not liable for any loss or damage however and whenever caused by any use of this dataset.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Esri shapefile
File_Decompression_Technique: ZIP
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.rigis.org>
Fees:
No fee for downloading directly from the RIGIS Data Distribution System located at <http://www.rigis.org>.
Metadata_Reference_Information:
Metadata_Date: 20051115
Metadata_Review_Date: 20051130
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: RI Dept. of Administration
Contact_Person: RIGIS Coordinator
Contact_Position: GIS Manager
Contact_Address:
Address_Type: mailing and physical address
Address: RI Department of Administration - RIGIS
Address: One Capitol Hill
City: Providence
State_or_Province: RI
Postal_Code: 02908-5872
Country: US
Contact_Address:
Address_Type: mailing and physical address
Address: The University of Rhode Island
Address: Environmental Data Center
Address: Coastal Institute at Kingston
City: Kingston
State_or_Province: RI
Postal_Code: 02881
Country: United States of America
Contact_Voice_Telephone: 401 222-6483
Contact_Voice_Telephone: 1-401-874-2180
Contact_Facsimile_Telephone: 401 222-6482
Contact_Facsimile_Telephone: 1-401-874-4561
Contact_Electronic_Mail_Address: rigis@admin.ri.gov
Contact_Electronic_Mail_Address: greg@edc.uri.edu
Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM (Central Time)
Metadata_Standard_Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: none
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.22 on Mon Aug 31 14:35:38 2015