Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey (USGS), West Virginia Statewide Addressing and Mapping Board (WVSAMB), West Virginia University GIS Technical Center Publication_Date: 2005 Title: High Resolution 7.5' Quarter-Quad Orthoimages for UTM Zone 18 section of West Virginia, MrSID Compressed Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Sioux Falls, SD Publisher: U.S. Geological Survey Description: Abstract: An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation has been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. For this dataset, 2-foot pixel resolution natural color digital orthimages were obtained from the West Virginia Statewide Addressing and Mapping Board. The orthoimages were mosaicked and reprojected by the USGS from the original 2- foot pixel, West Virginia North and South State Plane (feet) Coordinate Systems to Universal Transverse Mercator (UTM) (meters), Zone 18, NAD83 datum. Each orthoimage (DOQQ) provides the equivalent to a quarter of a 7.5-minute map (3.75 minutes of latitude and longitude) with overedge. The overedge is approximately 300 meters beyond the extremes of the corners of coverage. The naming convention is based on the U.S. Geological Survey 1:24,000 Topographic Map Series with the quadrant abbreviation, i.e. athens_ne.tif, etc. This data set covers the section of West Virginia that falls in UTM zone 18 on the east edge of the state plus one column of USGS quads on the UTM zone 17 side of the UTM zone line. Purpose: This data depicts geographic features on the surface of the earth. It was created to provide easily accessible geospatial data for a variety of purposes, from interim base maps to field references for earth science investigations and analysis. Also, data is readily available to enhance the capability of Federal, State and local emergency responders, as well as a plan for homeland security efforts. This data also supports The National Map. 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: irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -78.120 East_Bounding_Coordinate: -77.636 North_Bounding_Coordinate: 39.765 South_Bounding_Coordinate: 39.050 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: 0.6096012192 meter orthoimage Theme_Keyword: rectified photograph Theme_Keyword: rectified image Theme_Keyword: orthoimage Theme_Keyword: orthophoto Theme_Keyword: natural color orthophoto 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 Coumbia 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: WV Place: Place_Keyword_Thesaurus: None Place_Keyword: West Virginia Place: Place_Keyword_Thesaurus: None Place_Keyword: Berkeley County, WV Place_Keyword: Jefferson County, WV Place_Keyword: Morgan County, WV Access_Constraints: None Use_Constraints: None. However, user 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. User should not use this data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Data_Set_Credit: West Virginia Statewide Addressing and Mapping Board Native_Data_Set_Environment: Intergraph IRAS-C software, Automatic Image Mosaicker (AIM) software 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 errrors in the DEM. Logical_Consistency_Report: 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. Tile content and edges are visually inspected after mosaicking and product generation. However, mismatches from the original orthoimages have not been corrected. Completeness_Report: Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. A few minor imperfections were noticed in the final images but were not fully investigated. These imperfections appeared to be coming from the original source images. These images are derived by mosaicking and resampling existing orthoimages obtained from West Virginia State Addressing and Mapping Board. Source imagery is cloud free. Source imagery from West Virginia State Addressing and Mapping Board covers the entire state of West Virginia. 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. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 2.98 Horizontal_Positional_Accuracy_Explanation: Federal Geographic Data Committee, 1998, Geospatial Positioning Accuracy Standard, Part 3, National Standard for Spatial Data Accuracy, FGDC-STD-001-1998. 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 Process_Step: Process_Description: EarthWhere software version 3.6.1 (http://earthwhere.com) from SANZ (http://sanz.com) was used to mosaic, reproject, and cut into a new tile size the original WV North and South State Plane images. The image processing capabilities of EarthWhere are based on OSSIM (http://www.ossim.org). The original images where ew_ingested into EarthWhere. A text file was created with names and decimal degree geographic corner coordinates of the desired quarter quads. The decimal degree corners were generated by obtaining the LAT/LON corners of each quarter quad, converting these to NAD83, UTM zone 18, then adding or subtracting 300 meters to the X and Y to produce a 300 meter overedge, then converting these UTM overedge coordinates back into decimal degrees. The EarthWhere ewChipper process was used to specify the desired output projection and cubic convolution resampling method, read this text file, and create an EarthWhere job for each image. Once all images were created, an ESRI raster catalog file was generated from the new GeoTIFFs and read with ArcGIS to visually verify this section of the state had completed successfully. Source_Used_Citation_Abbreviation: Color Digital Orthophotography Process_Date: 20051027 Source_Produced_Citation_Abbreviation: Dataset reprojection and reformatting Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Lester Neifert Contact_Organization: USGS NGTOC Contact_Position: Data Aquisition Manager Contact_Address: Address_Type: mailing and physical address Address: 1 Denver Federal Center, Bldg. 810 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303.202.4564 Contact_Electronic_Mail_Address: lineifert@usgs.gov Process_Step: Process_Description: MrSID images, and associated SDW files, were created from the GeoTIFFs produced in the previous step. Command line MrSID compressor (mrsid_compress) version 1.3 running under SGI IRIX was run on each GeoTIFF with the command line: "mrsid_compress -tifg -c 20 -b 1024 -i QUAD_NAME.tif". Once all images were compressed, an ESRI raster catalog file was generated from the new MrSIDs and read with ArcGIS to visually verify this section of the state had completed successfully. Source_Used_Citation_Abbreviation: Color Digital Orthophotography Process_Date: 20051027 Source_Produced_Citation_Abbreviation: Dataset reprojection and reformatting Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Lester Neifert Contact_Organization: USGS NGTOC Contact_Position: Data Aquisition Manager Contact_Address: Address_Type: mailing and physical address Address: 1 Denver Federal Center, Bldg. 810 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303.202.4564 Contact_Electronic_Mail_Address: lineifert@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -075.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.6096012192 Ordinate_Resolution: 0.6096012192 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.2572221 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: For natural color orthoimagery from file, 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. Areas where the rectification process is incomplete because of incomplete data are represented with the numeric values of 0 (black) or 128 (gray). Entity_and_Attribute_Detail_Citation: U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA. Metadata_Reference_Information: Metadata_Date: 20051027 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Contact_Address: Address_Type: mailing Address: EROS Data Center City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: US Contact_Voice_Telephone: 1-605-594-6151 Contact_TDD/TTY_Telephone: 1-605594-6933 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_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: Suite LM-10 City: Charleston State_or_Province: WV Postal_Code: 25301 Country: US Contact_Voice_Telephone: 304-558-4218 Contact_Facsimile_Telephone: 304-558-4963 Contact_Electronic_Mail_Address: cneidig@gis.state.wv.us Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM (Eastern Time) Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998