WVSAMB Color Digital Orthophotos North Zone

Metadata also available as

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: The West Virginia Statewide Addressing and Mapping Board
Publication_Date: 20040630
Title: WVSAMB Color Digital Orthophotos North Zone
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Charleston, WV
Publisher: West Virginia Statewide Addressing and Mapping Board
Description:
Abstract:
Digital color orthophotography of the State of West Virginia (West Virginia State Plane Coordinate System North Zone). The W.V. state plane system has two cartographic zones, north and south. This data set consists of 10,000' x 10,000' uncompressed 24-bit natural color TIFF files at a pixel resolution of 2.0' and 10,000' x 10000' compressed 24 bit-bit natural color MrSid files at a pixel resolution of 2.0'. Digital orthophotography combines the image characteristics of a photograph with the geometric qualities of a map. Digital orthophotography is a process which converts aerial photography from an original photo negative to a digital product that has been positionally corrected for camera lens distortion, vertical displacement and variations in aircraft altitude and orientation. The imagery was captured at a negative scale of 1" = 2400' in the spring of 2003 for the purpose of producing natural color digital orthophotos at a 2' pixel resolution. The ortho-rectification process has achieved <9.8' ft. horizontal accuracy at a 95% confidence level. TIFF files are approximately 75 MB in size. MrSid files are approximately 4 MB in size.
Purpose:
Aerial survey of the state of West Virginia. Orthophotos are intended primarily to serve public safety E 9-1-1 and emergency management purposes.
Supplemental_Information:
© West Virginia Statewide Addressing and Mapping Board. All rights reserved.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20030310
Ending_Date: 20030606
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -081.83952
East_Bounding_Coordinate: -077.58379
North_Bounding_Coordinate: 40.68067
South_Bounding_Coordinate: 38.61337
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: digital orthophoto
Theme_Keyword: digital image map
Theme_Keyword: aerial photograph
Theme_Keyword: rectified photograph
Theme_Keyword: rectified image
Theme_Keyword: orthophoto
Theme_Keyword: DEM
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: West Virginia
Place_Keyword: Hancock County, WV
Place_Keyword: Brooke County, WV
Place_Keyword: Ohio County, WV
Place_Keyword: Marshall County, WV
Place_Keyword: Wetzel County, WV
Place_Keyword: Tyler County, WV
Place_Keyword: Pleasants County, WV
Place_Keyword: Wood County, WV
Place_Keyword: Wirt County, WV
Place_Keyword: Ritchie County, WV
Place_Keyword: Doddridge County, WV
Place_Keyword: Harrison County, WV
Place_Keyword: Marion County, WV
Place_Keyword: Monongalia County, WV
Place_Keyword: Taylor County, WV
Place_Keyword: Barbour County, WV
Place_Keyword: PrestonCounty, WV
Place_Keyword: Tucker County, WV
Place_Keyword: Grant County, WV
Place_Keyword: Hardy County, WV
Place_Keyword: Mineral County, WV
Place_Keyword: Hampshire County, WV
Place_Keyword: Morgan County, WV
Place_Keyword: Berkeley County, WV
Place_Keyword: Jefferson County, WV
Access_Constraints:
Until further notice access is limited to the WV SAMB and its consultants, 55 counties of West Virginia, RTI, USDA-NRCS, and West Virginia Division of Highways. Each of these agencies is bound by the terms of contractual agreements stating the manner in which data may be accessed. None of these agencies may distribute these data to a 3rd party without the expressed written permission of the West Virginia Statewide Addressing and Mapping Board.
Use_Constraints:
The data represents the results of data collection/processing for a specific WVSAMB E 9-1-1 project, and indicates the general existing conditions. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended use.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Craig A. Neidig
Contact_Organization: West Virgina Statewide Addressing and Mapping Board
Contact_Position: Chair WVSAMB
Contact_Address:
Address_Type: mailing and physical address
Address: 1124 Smith Street
Address: Room LM-10
City: Charleston
State_or_Province: WV
Postal_Code: 25301
Country: USA
Contact_Voice_Telephone: 304-558-4218
Contact_Facsimile_Telephone: 304-558-4963
Contact_Electronic_Mail_Address: cneidig@gis.state.wv.us
Data_Set_Credit:
This data set was created for the West Virginia Statewide Addressing and Mapping Board by BAE SYSTEMS ADR, Inc.
Native_Data_Set_Environment: TIFF
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of the ground control and airborne GPS data is confirmed by the evaluation of the results of the analytical bundle adjustment. The residuals of the final adjustment ensured compliance with NSSDA standards. During the scanning of the original aerial film, the image histogram for each frame is carefully examined to ensure that the image has been scanned so that the minimum and maximum brightness values are captured to eliminate any loss of detail due to saturation of dark or light areas. The ortho-rectified images are checked for image quality and tone-balanced using a combination of techniques including adjusting the histogram of each color band in Intergraph's IRAS-C software, and using the block tone-matching algorithms provided by Orthovista software. Evaluation of the DEM includes checking the terrain data for spikes and wells, omissions, and other anomalies that do not meet the project accuracy requirements. Using the adjusted horizontal coordinates of the aerotriangulation points, their heights are interpolated from the neighboring DEM points. The interpolated coordinate of the aerotriangulation point is then compared with the actual adjusted Z value of the aerotriangulation result. Visual inspection of the stereoscopic model and contour lines (generated only for QA/QC purposes) is also made allowing the detection of errors in the DEM.
Logical_Consistency_Report:
All files are inspected by the Production Manager to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position when loaded using the ASCII file header, all files conform to the project specifications for pixel resolution, file standard, dimensions, and compression, and all files do not contain blemishes such as visible seam lines, tone differences, data dropout or artifacts; scan swathing, or warped bridges and overpasses.
Completeness_Report:
All imagery is visually inspected for completeness to ensure that no gaps or image misplacement exists in the image area. Imagery is mosaicked to ensure complete coverage for map sheets. The imagery has been checked to ensure that the boundary and the content has been covered in its entirety.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Orthophotography has a <9.79 ft. horizontal accuracy at 95% confidence level, National Standard for Spatial Data Accuracy (NSSDA), for a 2.0 foot Ground Resolution Distance (GRD). Horizontal accuracy determined as 1.7308 times the RMSE circular error(1.4142 x 4' = 5.657'). This requirement will not be applicable in areas where the ground is obscured on the aerial photography by foliage, prevalent smoke, or dense shadow.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
All DEM data will meet a vertical accuracy of +/- ten (10) feet at the 95% confidence level consistant with NSSDA standards. This requirement will not be applicable in areas where the ground is obscured on the aerial photography by foliage, prevalent smoke, or dense shadow.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: T3 Global Strategies, Inc.
Publication_Date: 20031013
Title: GPS Photo Control Survey for the State of West Virginia
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publication_Place: Bridgeville, PA
Publisher: T3 Global Strategies, Inc.
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20030301
Ending_Date: 20030828
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: GPS Ground Control
Source_Contribution:
To supplement the airborne GPS control network a total of 153 photo control points were captured as well as an additional 54 quality assurance control points that were incorporated in the quality assurance testing of the aerotriangulation. All horizontal and vertical control was prepared under the supervision of State of West Virginia licensed Professional Land Surveyors.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Photo Science, Inc.
Publication_Date: 20030630
Publication_Time: Unknown
Title: Aerial Imagery Acquisition of the State of West Virginia
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Lexington, KY
Publisher: Photo Science, Inc.
Source_Scale_Denominator: 28800
Type_of_Source_Media: filmstrip
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20030310
Beginning_Time: unknown
Ending_Date: 20030606
Ending_Time: unknown
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Aerial Photography
Source_Contribution:
Aerial photography was acquired using a flight design that included a total of 8612 exposures in 440 North-South oriented flight lines and 20 cross-tie lines. Aerial photography was exposed on Kodak Color Aerial 2 film 2444. Aerial photogaphy was supplemented with the simultaneous acquisition of airborne GPS data, which captured the ground coordinate for the nadir point of each photograph. Aerial photography was exposed at an altitude of 14400' above mean terrain yielding an approximate scale of 1:28800.
Source_Information:
Source_Citation:
Citation_Information:
Originator: BAE SYSTEMS ADR
Publication_Date: 20040130
Publication_Time: Unknown
Title: Analytical aerotriangulation
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publication_Place: Mt. Laurel, NJ
Publisher: BAE SYSTEMS ADR
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20040130
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Analytical aerotriangulation
Source_Contribution:
Softcopy aerotriangulation was performed utilizing the airborne GPS data, GPS ground control and image coordinate measurements allowing the direct computation of the exterior orientation parameters for each image of the project.
Process_Step:
Process_Description:
Aerial photography was acquired using a flight design that included a total of 8612 exposures in 440 North-South oriented flight lines and 20 cross-tie lines. Aerial photography was exposed on Kodak Color Aerial 2 film 2444. Aerial photogaphy was supplemented with the simultaneous acquisition of airborne GPS data, which captured the ground coordinate for the nadir point of each photograph. Aerial photography was exposed at an altitude of 14400' above mean terrain yielding an approximate scale of 1:28800.
Process_Date: 20030606
Source_Produced_Citation_Abbreviation: Aerial Photography
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BAE SYSTEMS ADR
Contact_Person: Sandra Elfreth-Howery
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 124 Gaither Drive
Address: Suite 100
City: Mt. Laurel
State_or_Province: NJ
Postal_Code: 08054
Country: USA
Contact_Voice_Telephone: 856-866-9700
Contact_Facsimile_Telephone: 856-866-7800
Contact_Electronic_Mail_Address: s.elfreth.howery@adrinc.com
Hours_of_Service: 0800-1700
Process_Step:
Process_Description:
Softcopy aerotriangulation utilizes the GPS ground control and image coordinate measurements which are run through bundle block adjustment software computing the exterior orientation parameters for each image of the photogrammetric project. The original aerial film was scanned utilizing a Socet Set DSW600 precision photogrammetric scanner at a resolution of 12.5 microns. Using these scans the aerotriangulation process employs a rigorous mathematical model which detects measurement errors, and corrects for systematic image distorion, film shrikage, atmospheric refraction and camera lens distortions. The final bundle adjustment results are inspected to ensure that the RMSE meets the required 1 part in 10000.
Source_Used_Citation_Abbreviation: GPS Ground Control
Source_Used_Citation_Abbreviation: Aerial Photography
Process_Date: 20040130
Source_Produced_Citation_Abbreviation: Analytical Aerotriangulation
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BAE SYSTEMS ADR
Contact_Person: Sandra Elfreth-Howery
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 124 Gaither drive
Address: Suite 100
City: Mt. Laurel
State_or_Province: NJ
Postal_Code: 08054
Country: USA
Contact_Voice_Telephone: 856-866-9700
Contact_Facsimile_Telephone: 856-866-7800
Contact_Electronic_Mail_Address: s.elfreth.howery@adrinc.com
Hours_of_Service: 0800-1700
Process_Step:
Process_Description:
The procedure utilized for the development of the DTM/DEM development used a combination of automated and manual techniques. The initial phase produced an intermediate terrain data set using a series of automatic data processing algorithms known as Automatic Terrain Extraction. This data set is further refined using a series of automatic filtering techniques, along with visual inspection and editing processes to produce a fully compliant DEM meeting the project specifications. To enhance the results of the ATE process linear and polygonal break line information was collected in all areas where a more rigorous data set was required to define changing terrain conditions. This break line data is then merged into the correlated terrain file and used to influence the DTM by correcting areas where the ATE process has failed to depict the terrain accurately.
Source_Used_Citation_Abbreviation: Aerial Photography
Source_Used_Citation_Abbreviation: Analytical Aerotriangulation
Process_Date: 20040615
Source_Produced_Citation_Abbreviation: DTM/DEM
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BAE SYSTEMS ADR
Contact_Person: Sandra Elfreth-Howery
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 124 Gaither Drive
Address: Suite 100
City: Mt. Laurel
State_or_Province: NJ
Postal_Code: 08054
Country: USA
Contact_Voice_Telephone: 856-866-9700
Contact_Facsimile_Telephone: 856-866-7800
Contact_Electronic_Mail_Address: s.elfreth.howery@adrinc.com
Hours_of_Service: 0800-1700
Process_Step:
Process_Description:
Digital orthorectification includes a spatial and radiometric transformation of the scanned image from line/sample space into the specified ground coordinate system. The interior and exterior orientation parameters from the aerotriangulation process are used to project each pixel into the ground coordinate system, while the DEM is used to correct for relief displacement. The Color orthophotos are generated by Intergraph's Base Rectifier using a cubic convolution algorithm. Once the images are ortho-rectified, they are checked for geometric accuracy and image quality, and tone-balanced. The individual overlapping orthophotos are mosaicked together using Automatic Image Mosaicker (AIM) software into one seamless image data set. Final tiles are then extracted from the image set to the State of West Virginia's tiling scheme.
Source_Used_Citation_Abbreviation: Aerial Photography
Source_Used_Citation_Abbreviation: Analytical Aerotriangulation
Source_Used_Citation_Abbreviation: DTM/DEM
Process_Date: 20040630
Source_Produced_Citation_Abbreviation: Color Digital Orthophotography
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BAE SYSTEMS ADR
Contact_Person: Sandra Elfreth-Howery
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 124 Gaither Drive
Address: Suite 100
City: Mt. Laurel
State_or_Province: NJ
Postal_Code: 08054
Country: USA
Contact_Voice_Telephone: 856-866-9700
Contact_Facsimile_Telephone: 856-866-7800
Contact_Electronic_Mail_Address: s.elfreth.howery@adrinc.com
Hours_of_Service: 0800-1700
Process_Step:
Process_Description:
The SAMB required its Project Management Team (Michael Baker Jr, Inc.) to perform independent quality assurance in order to certify final product acceptance. Baker used NSSDA automated and visual tests of attribute accuracy, logical consistency, completeness, and adherence to SAMB project data specifications.
Source_Used_Citation_Abbreviation: Color Digital Orthophotography
Process_Date: 20040630
Source_Produced_Citation_Abbreviation: Independant Quality Assurance Report
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Joseph Seppi C.M.S.
Contact_Organization: Michael Baker Jr., Inc
Contact_Position: Special Projects Director
Contact_Address:
Address_Type: mailing and physical address
Address: 5088 W. Washington St.
City: Charleston
State_or_Province: WV
Postal_Code: 25013
Country: USA
Contact_Voice_Telephone: 304-769-2115
Contact_Facsimile_Telephone: 304-769-0822
Contact_Electronic_Mail_Address: jseppi@mbakercorp.com
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
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: 4701
Lambert_Conformal_Conic:
Standard_Parallel: 39.000000
Standard_Parallel: 40.25
Longitude_of_Central_Meridian: -79.50000
Latitude_of_Projection_Origin: 38.500000
False_Easting: 1968500.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 2.0
Ordinate_Resolution: 2.0
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.1
Altitude_Distance_Units: feet
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
A digital number from 0 to 255 will be assigned to each pixel. This number refers to a color look-up table which will contain the red, green, and blue (RGB) values, each from 0 to 255, for that digital number.
Entity_and_Attribute_Detail_Citation:
WVSAMB Project Plan Procedures Manual for Advanced Photogrammetric Mapping Services for Statewide Enhanced 9-1-1 and Rural Addressing and Additional E 9-1-1 Addressing Services, July 10, 2003.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: West Virginia Statewide Addressing and Mapping Board
Contact_Address:
Address_Type: mailing and physical address
Address: 1124 Smith Street
Address: Room LM-10
City: Charleston
State_or_Province: WV
Postal_Code: 25301
Country: USA
Contact_Voice_Telephone: 304-558-4218
Contact_Facsimile_Telephone: 304-558-4963
Contact_Electronic_Mail_Address: cneidig@gis.state.wv.us
Hours_of_Service: 0800-1600, ET
Resource_Description: Tile Name
Distribution_Liability:
To be determined. Law Enforcement Sensitive. Not for distribution.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Information_Content:
TIFF (Tagged Image File Format) is one of the most popular and flexible of the current public domain raster file formats. Tiff is designed for raster data interchange. TIFFs main strengths are a highly flexible and platform-independent format that is supported by numberous image-processing applications. Since developers of printers, scanners and monitors designed it, it has a rich space of imformation elements for colorimetry calibration, gamut tables, etc. Such information is also very useful for remote sensing and multi-spectral application. TIFF also has the ability to break an image into tiles rather than scan lines. This allows for efficient access to very large images which have been compressed.
Transfer_Size: 75 MB
Digital_Transfer_Option:
Offline_Option:
Offline_Media: TBD
Recording_Format: TBD
Digital_Form:
Digital_Transfer_Information:
Format_Name: MrSid
Format_Information_Content:
MrSid uses a lossy compression technique in that data is purged; however, it achieves virtually lossless compression even at ratios of 20 to 30:1. The compression is based on wavelet technology. Wavelet algorithms also take into account the fact that the amount of detail may vary within the image, which is perfect for geospatial images that tend to represent detailed urban areas as well as large areas of no detail within a single image. This technique transforms the bits of the image using a mathematical formula to combine the advantages of lossy and lossless compression: small file size, excellent image quality, and geometric accuracy. Using MrSid decompression techniques results in a final product, so no decompression is necessary. MrSid files can be viewed in *.sid compatible viewers.
Transfer_Size: 4 MB
Digital_Transfer_Option:
Offline_Option:
Offline_Media: TBD
Recording_Format: TBD
Fees: TBD as of 02/2004
Custom_Order_Process: TBD as of 02/2004
Metadata_Reference_Information:
Metadata_Date: 20040130
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandra Elfreth-Howery
Contact_Organization: BAE SYSTEMS ADR
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 124 Gaither Drive
Address: Suite 100
City: Mt. Laurel
State_or_Province: NJ
Postal_Code: 08054
Country: USA
Contact_Voice_Telephone: 856-866-9700
Contact_Facsimile_Telephone: 856-866-7800
Contact_Electronic_Mail_Address: s.elfreth.howery@adrinc.com
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.7.33 on Tue Aug 17 12:43:32 2004