Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2006 Title: USGS High Resolution Orthoimagery for the Charleston, West Virginia Urban Area Geospatial_Data_Presentation_Form: SDE raster digital data Series_Information: Series_Name: Urban Area Orthoimagery Issue_Identification: 0.1 Publication_Information: Publication_Place: Sioux Falls, SD Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: "This data set consists of 0.3-meter pixel resolution (approximately 1-foot), natural color orthoimages covering the urban area footprint. 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 3-meter diagonal RMSE (2.12m RMSE in X or Y). Each orthoimage provides imagery over a 1500- by 1500-meter block on the ground. There is no image overlap between adjacent files. The projected coordinate system is UTM on the NAD83 datum. The naming convention is based on the U.S. National Grid (USNG), taking the coordinates of the SW corner of the orthoimage." 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: The data obtained through The Seamless Server is considered to be the "best available" data from USGS. Historical data and other data may be obtained by contacting Customer Services, Center for Earth Resources Observation & Science, at 1-800-252-4547. Information in quotation marks, initial processing steps, accuracy reports, and source information is taken directly from the original metadata. Spatial-specific information not available Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060401 Ending_Date: 20060701 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate:-103.001 East_Bounding_Coordinate:-103.0 North_Bounding_Coordinate:44.001 South_Bounding_Coordinate:44.0 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: 0.3 meter orthoimage Theme_Keyword: rectified photograph Theme_Keyword: rectified image Theme_Keyword: orthophoto Theme_Keyword: natural color orthophoto Theme_Keyword: orthoimage Theme_Keyword: image map Theme: Theme_Keyword_Thesaurus: ISO 19115 Category Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: geoscientificInformation Theme_Keyword: location 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 10-4,): Washington, D.C., National Institute of Standards and Technology Place_Keyword: United States Place_Keyword: U.S. 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: WV Place: Place_Keyword_Thesaurus: None Place_Keyword: Charleston, WV Access_Constraints: Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. Use_Constraints: There is no guarantee of warranty concerning the accuracy of the data. 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. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to for the USGS disclaimer. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Customer Services Representative Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Earth Resources Observation & Science Address: 47914 252nd Street City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: 605/594-6151 Contact_Voice_Telephone: 1-800-252-4547 Contact_TDD/TTY_Telephone: 605/594-6933 Contact_Facsimile_Telephone: 605/594-6589 Contact_Electronic_Mail_Address: custserv@usgs.gov Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Data_Set_Credit: Produced by Photo Science, Inc for the U. S. Geological Survey Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 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 one meter. 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. Photography was flown during leaf-off in deciduous vegetation regions. Imagery along the eastern margin of the urban area coverage and falling outside of the urban area may contain some void areas. These void areas have a radiometric value of 255 (white). Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. The location of existing photoidentifiable ground control and aerotriangulation points were evaluated on the Geotiff image and compared with their ground values in order to determine an overall accuracy for each test block of orthoimages within the project. After image coordinate measurement was completed for each block, an RMSE for the diagonal error was calculated for the orthoimages within the block. This value is an estimate of the horizontal accuracy of the tile expressed in meters. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 0.228 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: Photo Science, Inc. Publication_Date: unpublished material Title: 13-50 13-51 Geospatial_Data_Presentation_Form: remote-sensing image Source_Scale_Denominator: 15000 Type_of_Source_Media: stable-base material Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060418 Ending_Date: 20060419 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: PHOTO Source_Contribution: Source imagery for orthorectification process Source_Information: Source_Citation: Citation_Information: Originator: Photo Science, Inc. Publication_Date: Unpublished Material Title: Airborne GPS Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060418 Ending_Date: 20060419 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: ABGPS Source_Contribution: Provides initial photo station positions to control aerotriangulation. Source_Information: Source_Citation: Citation_Information: Originator: Photo Science, Inc. Publication_Date: Unpublished Material Title: Aerotriangulation Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060528 Ending_Date: 20060602 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: ATCONTROL Source_Contribution: Aerotriangulation provides the exterior orientation parameters (X, Y, Z, omega, phi, kappa) for input to the orthorectification process. Source_Information: Source_Citation: Citation_Information: Originator: U. S. Geological Survey Publication_Date: 2001 Title: USGS 30ft Digital Elevation Models: Hamlin, WV West Hamlin, WV Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1950 Ending_Date: 1954 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: DEM Source_Contribution: Used to provide ground elevations for orthorectification process. Process_Step: Process_Description: "The rectification process requires, as input, a digital elevation model (DEM) gridded to user-specified bounds, a digital image file (PHOTO), and external orientation parameters for the aerial photograph which are typically derived from aerotriangulation (ATCONTROL). Natural Color imagery was collected at a photo scale of 1:15000 and scanned at 18 microns to generate the raw raster scans. Airborne GPS positions were computed by Photo Science, Inc. and used as control in the aerotriangulation process. The scanned aerial images, ABGPS data, ground check point data, and camera calibration data were used as inputs to the aerotriangulaton process. ISAT 04.05 was used to perform block adjustments and generate exterior orientation parameters for each photo. The external orientation parameters were used to provide the geospatial control each photograph during orthorectification. Vertical control for the orthorectification process was obtained from existing USGS Digitial Elevation Models (DEM). During the orthorectification process, elevation data were extracted and resampled to meet user-specified intervals and bounds. The orthorectified imagery is resampled to a 0.3 meter ground resolution with a ground extent of 1500 meters by 1500 meters, without overlap. Each 1500-meter orthoimage was generated from a mosaic created from multiple photographs. Orthoproduction was performed using the Intergraph Ortho Pro 4.4.18. Seamlines were Manually Generated and tone balanced between frames prior to cutting out into 1500-meter products. The orthorectified imagery is georeferenced to UTM zone 16, NAD83, meters. All orthoimages are individually inspected for content, misalignments along mosaic seamlines, and void areas. Source information was collected and verified manually during the production process." Process_Date: 2006 Process_Step: Process_Description: The metadata were imported and updated for display through the Seamless Data Distribution System at Project level metadata are available in several formats: HTML, TEXT, XML, FAQ and SGML. Chip level metadata are available in XML format. Process_Date: 200612 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Customer Service Representative Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Earth Resources Observation & Science Address: 47914 252nd Street City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: 605-594-6151 Contact_Voice_Telephone: 1-800-252-4547 Contact_TDD/TTY_Telephone: 605-594-6933 Contact_Facsimile_Telephone: 605-594-6589 Contact_Electronic_Mail_Address: custserv@usgs.gov Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Contact_Instructions: The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to original processor. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 190000 Column_Count: 260000 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -81.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.300000 Ordinate_Resolution: 0.300000 Planar_Distance_Units: meters 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: 1.000000 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: "Natural color orthoimagery is organized in three color bands or channels which represent the red, green, and blue (RGB) portions of the spectrum. Each image pixel is assigned a triplet of numeric values, one for each color band. Numeric values range from 0 to 255. Areas where data is incomplete due to lack of full image coverage are represented with the numeric value of 0." 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: U.S. Geological Survey Contact_Position: Customer Services Representative Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Earth Resources Observation & Science Address: 47914 252nd Street City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: 605/594-6151 Contact_Voice_Telephone: 1-800-252-4547 Contact_TDD/TTY_Telephone: 605/594-6933 Contact_Facsimile_Telephone: 605/594-6589 Contact_Electronic_Mail_Address: custserv@usgs.gov Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Contact_Instructions: The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to the original processor. Resource_Description: Downloadable Data Distribution_Liability: Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Arc/Info Export Format and/or ArcView Shapefile Format_Version_Number: ArcGIS 9.1 Format_Specification: ASCII Transfer_Size: 0.001 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Access_Instructions: The URL provides a map interface that allows for data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing the Seamless Data Distribution System process for downloading. A request summary page is then generated with the download layers listed. By clicking the "download" button on the summary page, a zipped file will be generated that can be saved on the customer's computer. The file can then be unzipped and imported into various user software applications. Online_Computer_and_Operating_System: Not available for dissemination Fees: None Turnaround: Variable Technical_Prerequisites: ESRI ArcGIS Suite and/or Arc/Info or other compatible software, and supporting operating systems. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: unknown Metadata_Reference_Information: Metadata_Date: 20061215 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Customer Services Representative Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Earth Resources Observation & Science Address: 47914 252nd Street City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: 605/594-6151 Contact_Voice_Telephone: 1-800-252-4547 Contact_TDD/TTY_Telephone: 605/594-6933 Contact_Facsimile_Telephone: 605/594-6589 Contact_Electronic_Mail_Address: custserv@usgs.gov Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Contact_Instructions: The above is the contact information for the USGS Center for Earth Resources Observation and Science in Sioux Falls, SD. This is the digital data storage and distribution center for the USGS. Metadata information can also be obtained through online services using The National Map Viewer, at Metadata_Standard_Name: FGDC Content Standards 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_Security_Handling_Description: None Metadata_Extensions: Online_Linkage: Profile_Name: ESRI Metadata Profile