Identification_Information: Citation: Citation_Information: Originator: North Carolina State University, Center for Earth Observation Publication_Date: 20021002 Title: Color Infrared Orthorectified Photomosaic Leaf-off for George Washington Birthplace National Monument Vegetation Mapping Project Edition: first Geospatial_Data_Presentation_Form: remote-sensing image Online_Linkage: http://biology.usgs.gov/npsveg/ftp/vegmapping/gewa/gewaortho.zip Description: Abstract: Orthorectified color infrared ERDAS Imagine image of George Washington Birthplace NM. Produced from 23 color infrared photos taken February 18, 2002 during leaf-off conditions. Orthorectification accomplished with Imagine Orthobase v8.5 software. The overall positional accuracy for the photomosaic meets the NMAS Class 1 standards. Purpose: The dataset was developed for use by George Washington Birthplace NM as a GIS component and for digital monoplotting and mapping. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20020218 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Description_of_Geographic_Extent: George Washington Birthplace Naional Monument and environs Bounding_Coordinates: West_Bounding_Coordinate: -76.950644 East_Bounding_Coordinate: -76.883594 North_Bounding_Coordinate: 38.206190 South_Bounding_Coordinate: 38.176150 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Orthorectification Theme_Keyword: Color Infrared Theme_Keyword: mosaic Theme_Keyword: aerial photo Theme_Keyword: CIR Theme_Keyword: imagine Theme_Keyword: leaf-off Place: Place_Keyword_Thesaurus: none Place_Keyword: Virginia Place_Keyword: National Monument Place_Keyword: National Park Place_Keyword: George Washington Birthplace Place_Keyword: Washington's Birthplace Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: 20020218 Temporal_Keyword: spring Temporal_Keyword: February Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Rijk Morawe Contact_Organization: George Washington Birthplace NM Contact_Position: Natural Resource Manager Contact_Address: Address_Type: mailing and physical address Address: George Washington Birthplace National Monument 1732 Popes Creek Road City: Washington's Birthplace State_or_Province: Virginia Postal_Code: 22443-5115 Country: USA Contact_Voice_Telephone: (804) 224-1732 Contact_Electronic_Mail_Address: Rijk_Morawe@nps.gov Data_Set_Credit: Mark P. Smith and William Millinor Native_Data_Set_Environment: ERDAS Imagine IMG File and MrSID Compressed File Data_Quality_Information: Logical_Consistency_Report: none Completeness_Report: George Washington Birthplace NM Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Overall positional accuracy of 1.08 meters based on Euclidean distance: 0.83 meters in the x direction; 0.91 meters in the y direction. Meets the NMAS Class 1 map standard for x; NMAS Class 1 map standard for y. Horizontal accuracy was assessed on the basis of 27 field survey points distributed throughout the image. The actual field coordinates for these points were recorded with a Trimble ProXRS GPS unit with real-time differential correction with a minimum of 180 fixes per point. The field coordinates were then compared to the image mosaic coordinates for these points, determined in ESRI ArcView 3.3 software. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USGS (http://ned.usgs.gov/) Publication_Date: unknown Title: 30 Meter Digital Elevation Model- USGS Natioanl Elevation Dataset Geospatial_Data_Presentation_Form: model Source_Scale_Denominator: 30 meter Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20011003 Source_Currentness_Reference: 20011003 Source_Citation_Abbreviation: dem Source_Contribution: elevation Source_Information: Source_Citation: Citation_Information: Originator: Kucera Internation, Inc Publication_Date: Unpublished Material Title: Aerial photographs of George Washington Birthplace NM Geospatial_Data_Presentation_Form: remote-sensing image Source_Scale_Denominator: 6000 Type_of_Source_Media: color ir aerial transparencies Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20020218 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: photos Source_Contribution: Aerial view of George Washington Birthplace NM Process_Step: Process_Description: The photos (23 total) were used to create an orthorectified mosaic using Erdas Imagine. The photos were scanned at 600 dpi and imported into Imagine. The DEMs were resampled from 30 meters to 10 meters in ArcInfo Workstation using cubic convolution and then mosaicked together. If the mosaicked DEMs had gaps, they were then run in ArcInfo Workstation using a focal mean. The images were orthorectified using ERDAS Imagine Orthobase software. Airborne GPS and IMU data were used in the aerial triangulation procedure. Aerial triangulation produced a single RMSE of less than 1 meter for the entire block of photos. The orthorectified images were then mosaiced within Imagine to form one seamless basemap image for George Washington Birthplace NM. The mosaic was compressed using MrSID software at a 1:20 target compression ratio. Process_Date: 200206 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NCSU, Center for Earth Observation Contact_Address: Address_Type: mailing address Address: NCSU, Center For Earth Observation NCSU Campus Box 7106 City: Raleigh State_or_Province: NC Postal_Code: 27695-7106 Country: USA Contact_Voice_Telephone: 919-515-3430 Contact_Facsimile_Telephone: 919-515-3439 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 12508 Column_Count: 22599 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: 0.999600 Longitude_of_Central_Meridian: -75.000000 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: 0.257016 Ordinate_Resolution: 0.257016 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 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Dataset consists of a raster 3 band color image. The bands are blue, green and near infrared. Each pixel contains a value between 0 - 255. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS BRD Center for Biological Informatics Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Room 8000, MS 302 City: Denver State_or_Province: Colorado Postal_Code: 80225 Contact_Voice_Telephone: (303) 202-4220 Contact_Facsimile_Telephone: 303-202-4219 Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov Resource_Description: Orthorectified 3 band color infrared image of George Washington Birthplace NM (gewa_spring.img; gewa_spring.sid). Distribution_Liability: The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data. The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: HTML Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://biology.usgs.gov/npsveg/gewa/index.html Access_Instructions: Internet Access Fees: None Metadata_Reference_Information: Metadata_Date: 20021002 Metadata_Review_Date: 20100526 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS BRD Center for Biological Informatics Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Room 8000, MS 302 City: Denver State_or_Province: Colorado Postal_Code: 80225 Contact_Voice_Telephone: (303) 202-4220 Contact_Facsimile_Telephone: 303-202-4219 Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001.1-1999 Metadata_Extensions: Online_Linkage: http://www.nbii.gov/portal/server.pt/community/fgdc_metadata/255