April 2014 Rhode Island Statewide High Resolution Orthoimages

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Originator: Fugro EarthData, Inc.
Publication_Date: 20150304
Title: April 2014 Rhode Island Statewide High Resolution Orthoimages
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Rolla, MO
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested bibliographic reference: RIGIS, 2015. April 2014 Rhode Island Statewide High Resolution Orthoimages. Rhode Island Geographic Information System (RIGIS) Data Distribution System, URL: <http://www.rigis.org>, Environmental Data Center, University of Rhode Island, Kingston, Rhode Island (last date accessed: 11 September 2015).
Larger_Work_Citation:
Citation_Information:
Originator: Rhode Island Geographic Information System (RIGIS)
Publication_Date: 1993
Title:
Rhode Island Geographic Information System (RIGIS) Data Distribution System
Online_Linkage: <http://www.rigis.org>
Description:
Abstract:
These data consist of 0.3-meter pixel resolution (approximately 1-foot), 4-band (R,G,B,IR) orthoimages covering the State of Rhode Island collected April 9-10 and 17, 2014. 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. The design accuracy is estimated not to exceed 1.52-meters [4.99 feet] NSSDA 95% confidence (0.88-meters [2.89 feet] Root Mean Squared (RMSE) Error XY (0.62 meter [2.03 feet] RMSE X or Y). Each orthoimage provides imagery over a 5000-foot by 5000-foot block on the ground. There is no image overlap between adjacent files. The projected coordinate system is Rhode Island State Plane with a NAD83 datum.
Purpose:
This data depicts geographic features on the surface of the earth. It was created to provide easily accessible geospatial data which is readily available to enhance the capability of Federal, State, and local emergency responders, as well as plan for homeland security efforts. This data also supports The National Map.
Supplemental_Information:
These images were collected and processed by Fugro EarthData Inc under contract to the USGS. Funding for this project was provided by the National Geospatial-Intelligence Agency and the Rhode Island Department of Administration, Statewide Planning Program.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20140409
Single_Date/Time:
Calendar_Date: 20140410
Single_Date/Time:
Calendar_Date: 20140417
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.897900
East_Bounding_Coordinate: -71.087988
North_Bounding_Coordinate: 42.043861
South_Bounding_Coordinate: 41.123786
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: 0.3 meter orthoimage
Theme_Keyword: rectified photograph
Theme_Keyword: rectified image
Theme_Keyword: orthophoto
Theme_Keyword: 4-band (R,G,B,IR) 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:
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: US
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Providence, RI
Access_Constraints: None
Use_Constraints:
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. Please acknowledge both RIGIS and the primary producer(s) of this dataset in any derived products. Versions of the RIGIS logo suitable for both printed and web-based products are available at <http://www.edc.uri.edu/rigis/logos>. Users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of it's limitations. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data.
Data_Set_Credit: Fugro EarthData, Inc.
Native_Data_Set_Environment:
The following software is used for validation of the imagery and surface modeling 1. Aerotriangulation - Pixel Factory 3.2, Linux 2. Digital Orthophotography - Pixel Factory 3.2, Linux 3. Bentley - MicroStation 4. Pixel Factory 3.2, Linux 5. Esri - ArcMap 6. ERDAS Imagine 7. TerraScan/TerraModel 8. Fugro EarthData Proprietary software 9. Adobe - Photoshop 10. GPro 11. LizardTech GeoExpress
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Radiometry is verified by visual inspection of the digital orthophoto. Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. 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:
All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Seamline mismatches are not corrected unless the overall displacement exceeds 0.6 meters.
Completeness_Report:
Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free. Imagery acquisition during leaf-on conditions was approved.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The orthophotos were created to be fully compliant with a horizontal positional accuracy shall not exceed 4.99 feet tested to NSSDA Standards (95% confidence). Accuracy value is provided using units US Survey Feet.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 1.59
Horizontal_Positional_Accuracy_Explanation:
Federal Geographic Data Committee, 1998, Geospatial Positioning Accuracy Standard, Part 3, National Standard for Spatial Data Accuracy, FGDC-STD-007.3-1998
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Fugro EarthData, Inc.
Publication_Date: 20140417
Title: Providence, RI Raw ADS80 imagery
Geospatial_Data_Presentation_Form: remote-sensing image
Source_Scale_Denominator: 2400
Type_of_Source_Media: on-line
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20140409
Single_Date/Time:
Calendar_Date: 20140410
Single_Date/Time:
Calendar_Date: 20140417
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: wavelengths bands
Source_Contribution:
raw red, green, blue, and near infrared wavelengths collected at 2,865 meters above mean terrain. This is the input data for the digital orthophotos.
Source_Information:
Source_Citation:
Citation_Information:
Originator: TerraSurv, Inc.
Publication_Date: 20140423
Title: ground survey
Type_of_Source_Media: spreadsheet
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20140401
Single_Date/Time:
Calendar_Date: 20140402
Single_Date/Time:
Calendar_Date: 20140403
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: ground control
Source_Contribution:
Ground control survey to support photogrammetric mapping and blind QC points.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Fugro EarthData, Inc.
Publication_Date: 20140503
Title: Pixel Factory DEM
Type_of_Source_Media: network drives
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20140503
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: surface
Source_Contribution:
Autocorrelated surface generated to support the development of orthophotography. The surface is edited into a bare earth DEM for use in orthorectification.
Process_Step:
Process_Description:
The digital orthophotography is comprised of a 24 bit, RGBN bands, 30cm pixel resolution ground and true orthos covering the Providence, RI project area. The imagery was acquired on April 9, 10, and 17 2014. The Pixel Factory process was used in the generation of the orthoimagery covering all project tiles. The rectification process was then run using the processed DSM on each flight line. The quicklook (reduced resolution rectification) of each flight line are exported out of Pixel Factory. Radiometric adjustments were made to the quicklooks using Fugro proprietary tools. The radiometrically balanced imagery was then re-imported into the Pixel Factory system and the histogram from the quicklook was applied to the full resolution imagery. Mosaic lines were placed, joining the ADS80 imagery strips. An initial QA/QC was performed by the technician to ensure that the mosaic lines were appropriately placed and that there was appropriate imagery coverage. The final imagery data set is removed from the Pixel Factory environment in a process called "packaging" where the individual tiles are created. All data processing in the Pixel Factory system is performed in UTM meters; it is during packaging that final datum and projection are defined. The created tiles were reviewed to ensure the output was successful and ground control points were measured and verified for accuracy. QA/QC was performed looking for anomalies, smears and other indications of problems within the digital orthophoto creation process, and interactive radiometric adjustment applied where needed. Additional global radiometric adjustments were applied to the completed orthos in Adobe Photoshop to enhance the color and/or contrast as needed. The tiles were originally delivered in NAD83(2011), Rhode Island State Plane, US Survey Feet; however, the initial delivery had incorrect datum information contained within the headers of the image files. When the data were returned for re-processing, t was also requested that the tiles be delivered in NAD83(1986), Rhode Island State Plane, US Survey Feet. Fugro worked with their approved ID/IQ subcontractor for ground control surveying, TerraSurv, Inc., to determine an average shift between NAD83(2011) and NAD83(1986) for the project area. This shift was applied prior to the data being reprojected from UTM to State Plane. The tiles were clipped to the customer provided tile layout, named “RI_SP_8388_sf_Layout.shp”. The created tiles were reviewed to ensure the output was successful and ground control points were measured and verified for accuracy. The final digital ortho products were delivered in GeoTIFF format. The GeoTIFFs were loaded into LizardTech GeoExpress creating a compressed mosaic in MrSID Gen4 format with a compression ratio of 20:1.
Process_Date: 20150304
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Fugro EarthData, Inc.
Contact_Position: Geospatial Extension Specialist
Contact_Address:
Address_Type: mailing and physical
Address: 7320 Executive Way
City: Frederick
State_or_Province: MD
Postal_Code: 21704
Process_Step:
Process_Description:
Data contributed to RIGIS by the Rhode Island Department of Administration, Statewide Planning Program. Metadata reviewed, with minor corrections and updates made to formatting and content. Source GeoTIFFs exported to JPEG2000 file format using Global Mapper 16, compressed at a target ratio of 10:1.
Process_Date: 20150325
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Rhode Island Environmental Data Center
Contact_Person: Greg Bonynge
Contact_Position: Geospatial Extension Specialist
Contact_Address:
Address_Type: mailing and physical
Address: 1 Greenhouse Road
City: Kingston
State_or_Province: RI
Postal_Code: 02881
Contact_Voice_Telephone: 401-874-2180
Contact_Electronic_Mail_Address: greg@edc.uri.edu
Contact_Instructions: Email preferred.
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 StatePlane Rhode Island FIPS 3800 Feet
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99999375
Longitude_of_Central_Meridian: -71.5
Latitude_of_Projection_Origin: 41.08333333333334
False_Easting: 328083.3333333333
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.00000000003195086214269339
Ordinate_Resolution: 0.00000000003195086214269339
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The orthoimagery is organized in four color bands or channels which represent the red, green, blue and near infrared (RGBN) portions of the spectrum. Each image pixel is assigned a quadruplet of numeric values, one for each color band. Numeric values range from 0 to 255.
Entity_and_Attribute_Detail_Citation:
U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA.
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: GeoTIFF and JPEG2000
File_Decompression_Technique: ZIP
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.edc.uri.edu/rigis>
Fees:
No fee for downloading directly from the RIGIS Data Distribution System located at <http://www.edc.uri.edu/rigis>.
Metadata_Reference_Information:
Metadata_Date: 20150309
Metadata_Review_Date: 20150911
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: Customer Services
Address: U.S. Geological Survey
Address: EROS Data Center
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 1-800-252-4547
Contact_TDD/TTY_Telephone: 1-605-594-6933
Contact_Facsimile_Telephone: 1-605-594-6589
Contact_Electronic_Mail_Address: custserv@usgs.gov
Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM (Central Time)
Contact_Instructions:
The above is the contact information for Earth Resources Observation and Science Center in Sioux Falls, SD.
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.22 on Fri Sep 11 09:51:37 2015