Identification_Information: Citation: Citation_Information: Originator: North Carolina State University, Center for Earth Observation Publication_Date: 20050401 Title: Color Orthorectified Photomosaic for Valley Forge National Historical Park Vegetation Mapping Project Edition: first Geospatial_Data_Presentation_Form: remote-sensing image Online_Linkage: http://biology.usgs.gov/npsveg/ftp/vegmapping/vafo/vafoortho.zip Description: Abstract: Orthorectified color infrared Imagine image of Valley Forge NHP. Produced from 49 color infrared photos taken September 1999. Orthorectification accomplished with Imagine Orthobase v8.4 software. Orhtophoto mosaic created in ER Mapper 6.4. Purpose: The dataset was developed for use by Valley Forge NHP as a GIS component and for digital monoplotting and mapping. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19990912 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Description_of_Geographic_Extent: Valley Forge National Historical Park and environs Bounding_Coordinates: West_Bounding_Coordinate: -75.473613 East_Bounding_Coordinate: -75.414876 North_Bounding_Coordinate: 40.124383 South_Bounding_Coordinate: 40.077012 Local_Bounding_Coordinates: Left_Bounding_Coordinate: 459645.764860 Right_Bounding_Coordinate: 464626.158683 Bottom_Bounding_Coordinate: 4436412.198701 Top_Bounding_Coordinate: 4441645.259500 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Imagine Theme_Keyword: Color Infrared Theme_Keyword: mosaic Theme_Keyword: aerial photo Theme_Keyword: Orthobase Place: Place_Keyword_Thesaurus: none Place_Keyword: Pennsylvania Place_Keyword: National Historical Park Place_Keyword: National Park Place_Keyword: Valley Forge Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: 1999 Temporal_Keyword: leaf-on Temporal_Keyword: September Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Lambert Contact_Organization: Valley Forge NHP Contact_Position: Natural Resource Manager Contact_Address: Address_Type: mailing address Address: Valley Forge NHP N. Gulph Road & Route 23 Admin Building City: Valley Forge State_or_Province: Pennsylvania Postal_Code: 19481 Country: USA Contact_Voice_Telephone: (610) 296-2583 Contact_Electronic_Mail_Address: Brian_Lambert@nps.gov Data_Set_Credit: Frank Koch Native_Data_Set_Environment: ERDAS Imagine IMG File and Mr. SID Compressed File Data_Quality_Information: Logical_Consistency_Report: none Completeness_Report: Valley Forge NHP Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Overall positional accuracy of 2.05 meters 1.26 meters in the x direction 2.84 meters in the y direction Meets the NMAS Class 1 map standard for x, NMAS Class 2 map standard for y Horizontal accuracy was assessed on the basis of 50 field survey points. The actual field coordinates for these points was recorded with a Trimble ProXRS GPS unit with real-time differential correction. The field coordinates were then compared to the image mosaic coordinates for these points, determined in ESRI ArcView 3.2 software. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USGS Publication_Date: 1995 Title: Digital Orthophoto Quarter Quadrangle (Valley Forge, PA) Geospatial_Data_Presentation_Form: remote-sensing image Source_Scale_Denominator: 40000 Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1995 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: doqq Source_Contribution: Aerial view of Valley Forge NHP Source_Information: Source_Citation: Citation_Information: Originator: USGS Publication_Date: unknown Title: 30 Meter Digital Elevation Model (Collegeville, PA and Valley Forge, PA) Geospatial_Data_Presentation_Form: model Source_Scale_Denominator: 30 meter Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: unknown Source_Currentness_Reference: best available data Source_Citation_Abbreviation: dem Source_Contribution: elevation Source_Information: Source_Citation: Citation_Information: Originator: Air Photographics, Inc Publication_Date: Unpublished Material Title: Aerial photographs of Valley Forge NHP 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: 19990912 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: photos Source_Contribution: Aerial view of Valley Forge NHP Process_Step: Process_Description: The photos (49 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 and mosaicked together. The images were orthorectified using Imagine Orthobase software. 100 manual tie points, 4642 automatically collected tie points, and 114 ground control points (using the DEMs and DOQQ as reference) were used in an aerial triangulation procedure. Aerial triangulation produced a single RMSE of less than 1 meter for the entire block of photos, and also predicted coordinates for all 4856 points. The photos were orthorectified in a batch process based on this solution. The orthorectified images were then mosaiced within ER MApper 6.4 to form one seamless basemap image for Valley Forge NHP. The mosaic was compressed using Mr. SID software at a 1:20 target compression ratio. Process_Date: 200412 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: 19800 Column_Count: 18844 Cell_Size_X_Direction: 0.264296 Cell_Size_Y_Direction: 0.264296 Bits_Per_Pixel: 8 Vertical_Count: 1 Raster_Origin: Upper Left Image_Colormap: FALSE Compression_Type: None Raster_Band_Count: 3 Raster_Display_Type: pixel codes Pyramid_Layers: TRUE Image_Format: ERDAS IMAGINE 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 Planar_Distance_Units: meters Coordinate_Representation: Abscissa_Resolution: 0.264296 Ordinate_Resolution: 0.264296 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 raster image of Valley Forge NHP. 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. Custom_Order_Process: Contact Brian Lambert Valley Forge NHP N. Gulph Road & Route 23 Admin Building Valley Forge, PA 19481 (610) 296-2583 Brian_Lambert@nps.gov 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/vafo/index.html Access_Instructions: Internet Access Fees: None Metadata_Reference_Information: Metadata_Date: 20050401 Metadata_Review_Date: 20100617 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