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: Profile_Name: ESRI Metadata Profile