Digital Rectified Imagery 2001 Index

FSA Digital Rectified Imagery - 2001 - Index for Southeast Nebraska

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: USDA-FSA-APFO Aerial Photography Field Office
Publication_Date: 20010801
Title:
FSA Digital Rectified Imagery - 2001 - Index for Southeast Nebraska
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Salt Lake City, Utah
Publisher: USDA-FSA-APFO
Online_Linkage: other-rectified-digital-imagery-2001-fsa-imagery
Description:
Abstract:
This data set contains photographic information obtained for the National Agricultural Imagery Program (NAIP) and is comprised of scanned photographs that were acquired with a precision aerial mapping camera at a nominal scale of 1:40,000 on color positive film. Acquisition was leaf on with mature crops prior to harvest. Twenty-five counties in Nebraska were finished. The subcontractor flew during five days in July and August, completing all image acquisition by mid August 2001. The aerial film was scanned and digitally rectified at a resolution of approximately two meters GSD for use as a visual interpretation tool and to take area measurements of farm fields to within +/- 5% accuracy. Horizontal accuracy of the imagery can be very good. However, the imagery was not intended to meet National Map Accuracy Standards. Significant horizontal offset relative to data of higher order accuracy can occur. This digital imagery serves as a base for Farm Service Center GIS applications and is used to administer USDA commodity support programs and conservation planning. NAIP imagery is quarter quadrangle centered to provide consistent and repeatable coverage. Imagery from NAIP can be ortho-rectified to meet or exceed national map accuracy standard, or reproduced as a photographic product in a variety of scales and sizes.
Purpose:
To compile and distribute digital or analog aerial photography of selected cropland areas in support of Farm Service Agency compliance and conservation programs.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20010701
Single_Date/Time:
Calendar_Date: 20010815
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -96.9375
East_Bounding_Coordinate: -96.8750
North_Bounding_Coordinate: 41.0000
South_Bounding_Coordinate: 40.9375
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Digital Ortho-rectified Image
Theme_Keyword: Ortho-rectified Image
Theme_Keyword: Ortho-rectified
Theme_Keyword: Ortho-rectification
Theme_Keyword: Ortho-referenced Image
Theme_Keyword: Georeferenced
Theme_Keyword: Quarter Quadrangle Centered
Theme_Keyword: NAIP
Theme_Keyword: Aerial Compliance
Theme_Keyword: Compliance
Theme_Keyword: USDA-FSA-APFO Aerial Photography Field Office
Theme_Keyword: United States Department of Agriculture (USDA)
Theme_Keyword: imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Nebraska
Place_Keyword: County
Place_Keyword: Quarter-Quadrangle
Place_Keyword: USA
Access_Constraints: None
Use_Constraints:
None, The Aerial Photography Field Office asks to be credited in derived products.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA-FSA- Aerial Photography Field Office (APFO)
Contact_Address:
Address_Type: mailing and physical address
Address:
2222 West 2300 South
City: Salt Lake City
State_or_Province: Utah
Postal_Code: 84119-2020
Country: USA
Contact_Voice_Telephone: 801-973-3503
Contact_Facsimile_Telephone: 801-975-3532
Contact_Electronic_Mail_Address: sales@apfo.usda.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Sample images for a county were displayed in ArcView against MrSID format mosaicked Digital Orthophoto Quadrangles (MDOQs) for that county. That contract imagery was checked to see how well it registered to the MDOQ as well as accurately adjacent individual images compared to each other in overlap areas. The county farm field boundary, Common Land Unit (CLU), boundaries were added to ArcView view to see how well the CLUs registered to the digital imagery as well. The registration checks allowed comparison of area measurements between the MDOQ and the digital imagery. The color film was inspected using APFO common standards for film.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: 2
Attribute_Accuracy_Explanation:
The imagery and film provided by the contractor far-exceeded contract specifications. The imagery was orthorectified although the contract stipulated georectification only. The products were essentially cloud free and very easy to work with. Area measurements were within five percent of the same area measurements on the MDOQ. In addition, the contractor voluntarily resampled two counties to one-meter resolution, and this imagery could easily meet USGS standards for DOQs.
Logical_Consistency_Report:
None
Completeness_Report:
None
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The positional accuracy for the digital datais tested by visual comparison to a data source with a higher order of accuracy.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: USDA-FSA-APFO Aerial Photography Field Office
Publication_Date: 20020928
Title:
Garland, NE
Geospatial_Data_Presentation_Form: remote-sensing image
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20020716
Source_Currentness_Reference:
Aerial Photography Date for aerial photo source.
Source_Citation_Abbreviation:
Ortho-rectifed Image
Source_Contribution:
Digital Ortho-rectifed Image.
Process_Step:
Process_Description:
The 1:40,000 color aerial photography film was scanned to produce a nominal 2 meter GSD image. The scanned images were rectified using a variety of image processing packages. An operator interactively registered each scanned image to several photo-identifiable points on a compressed mosaic of digital ortho-photo quarter quadrangles supplied by the USDA. Software tools were then used to rubber sheet each scanned image to the compressed ortho mosaic. Each rectified image was then quality checked to ensure that the accuracy specification was met. The rectified image was output in geotiff format in a nominal 2 meter ground sample distance.
Process_Date: 200109
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
D:\Metadata\doq\doq_fsa\metadata.xml
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Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
NE
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 3895
Column_Count: 3089
Vertical_Count: 1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 14-15
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -99.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 2.000000
Ordinate_Resolution: 2.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80 (GRS 80)
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
8-bit pixels represent brightness values 0 - 255
Entity_and_Attribute_Detail_Citation:
None
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Supervisor Sales Services Branch
Contact_Organization: USDA-FSA-APFO Aerial Photography Field Office
Contact_Address:
Address_Type: mailing and physical address
Address:
2222 West 2300 South
City: Salt Lake City
State_or_Province: Utah
Postal_Code: 84119-2020
Country: USA
Contact_Voice_Telephone: 801-975-3503
Contact_Facsimile_Telephone: 801-975-3532
Contact_Electronic_Mail_Address: sales@apfo.usda.gov
Resource_Description: Downloadable Data
Distribution_Liability:
In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it).
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoTiff
Format_Information_Content:
Color Positive
Transfer_Size: 1.645
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660 Mode 1 Level 2 Extensions
Fees: Contact the Aerial Photography Field Office for more information
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Metadata_Reference_Information:
Metadata_Date: 20080821
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Position: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centennial Mall South, P.O. Box 94676
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509-4676
Country: USA
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: dnr.gis@nebraska.gov
Hours_of_Service: 8:00 - 5:00 CST
Contact Instructions:
http://www.dnr.ne.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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