National Agricultural Imagery Program (NAIP) Digital Orthorectified Images (DOQ), Minnesota, 2010

This page last updated: 11/09/2010
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator U.S. Department of Agriculture, Farm Service Agency, Aerial Photography Field Office
Abstract This data set contains 3-band natural color imagery from the National Agricultural Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S. A primary goal of the NAIP program is to enable availability of ortho imagery within one year of acquisition.

The source files are 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP) or from NAIP. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP imagery is formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile.

This file was generated by compressing NAIP imagery that cover the county extent. MrSID compression was used. Target values for the compression ratio are (15:1).

(Note: The Minnesota Geospatial Information Office (MnGeo) has created this metadata record to describe the entire NAIP2010 dataset, using information from Farm Service Agency metadata. Each county file is accompanied by the original FSA metadata for that county.)
Browse Graphic none available
Time Period of Content Date 2010
Currentness Reference Summer and Fall 2010. See the IDATE attribute in the accompanying seamline shapefile for each county to find out the date(s) that the source imagery was acquired.
Access Constraints None
Use Constraints The Aerial Photography Field Office asks to be credited in derived products.

If defects are found in the NAIP imagery during the warranty period such as horizontal offsets, replacement imagery may be provided. Imagery containing defects that require the acquisition of new imagery, such as excessive cloud cover, specular reflectance, etc., will not be replaced within a NAIP project year.

Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.
Distributor Organization Minnesota Geospatial Information Office (MnGeo)
Ordering Instructions The county mosaics are available free online by clicking below after Online Linkage. This link will take you to a webpage that explains more about the MrSID file format and contains direct links to:

1. View the files seamlessly via a WMS service without having to download the files.

2. Download each county file from either MnGeo or the Natural Resources Conservation Service.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Full Metadata

National Agricultural Imagery Program (NAIP) Digital Orthorectified Images (DOQ), Minnesota, 2010

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

 
Section 1 Identification Information   Top of page
Originator U.S. Department of Agriculture, Farm Service Agency, Aerial Photography Field Office
Title National Agricultural Imagery Program (NAIP) Digital Orthorectified Images (DOQ), Minnesota, 2010
Abstract This data set contains 3-band natural color imagery from the National Agricultural Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S. A primary goal of the NAIP program is to enable availability of ortho imagery within one year of acquisition.

The source files are 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP) or from NAIP. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP imagery is formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile.

This file was generated by compressing NAIP imagery that cover the county extent. MrSID compression was used. Target values for the compression ratio are (15:1).

(Note: The Minnesota Geospatial Information Office (MnGeo) has created this metadata record to describe the entire NAIP2010 dataset, using information from Farm Service Agency metadata. Each county file is accompanied by the original FSA metadata for that county.)
Purpose NAIP imagery is available for distribution within 60 days of the end of a flying season and is intended to provide current information of agricultural conditions in support of USDA farm programs. For USDA Farm Service Agency, the 1 meter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The 1 meter NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies who use the imagery for a variety of purposes including land use planning and natural resource assessment. NAIP is also used for disaster response often providing the most current pre-event imagery.
Time Period of Content Date 2010
Currentness Reference Summer and Fall 2010. See the IDATE attribute in the accompanying seamline shapefile for each county to find out the date(s) that the source imagery was acquired.
Progress Complete
Maintenance and Update Frequency Irregular
Spatial Extent of Data Minnesota
Bounding Coordinates -95.1
-94.3
44.5
44
Place Keywords Minnesota
Theme Keywords imageryBaseMapsEarthCover, Digital Orthorectified Image, Digital Orthophoto Quad, Ortho, Orthophoto, DOQ, NAIP, Compliance, Air Photo, Air Photography, Aerial Photo, Aerial Photography
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints The Aerial Photography Field Office asks to be credited in derived products.

If defects are found in the NAIP imagery during the warranty period such as horizontal offsets, replacement imagery may be provided. Imagery containing defects that require the acquisition of new imagery, such as excessive cloud cover, specular reflectance, etc., will not be replaced within a NAIP project year.

Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.
Contact Person Information Supervisor Customer Service Section, Customer Service Section
Aerial Photography Field Office (APFO)
2222 West 2300 South
Salt Lake City, Utah 84119-2020
Phone: 801-844-2922
FAX: 801-956-3653
E-mail: apfo.sales@slc.usda.gov
Browse Graphic none available
Browse Graphic File Description
Associated Data Sets A shapefile, with its associated metadata, is included with this dataset. It shows seamline polygons delineating the boundary between DOQQ imagery used in the creation of the county NAIP file and attributes such as the source date of the imagery.

For information on other air photos available for Minnesota, including other years of NAIP imagery, see http://www.mngeo.state.mn.us/chouse/airphoto/index.html

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy NAIP imagery may contain as much as 10% cloud cover per tile.
Logical Consistency N/A
Completeness No report.
Horizontal Positional Accuracy FSA Digital Orthophoto Specs. The quarter-quad files are 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP) or from NAIP.
Vertical Positional Accuracy N/A
Lineage Aerial Services, Inc. utilized Leica Geosystems Flight Planning Evaluation Software (FPES) to create the flight planning for the digital camera flights. The flights were flown at an average flight height of 23,730 feet above ground with a 75cm gsd. Each line had 25% sidelap with the adjacent lines.

Navaho, Cheyenne and Commander aircraft were used on the project. The planes carried Leica digital camera ADS80-SH82 systems with sensors SN1300, SN1301, SN1324, and SN1318. Each camera has been calibrated by Leica. Certification and calibration data is on file at Leica Geosystems.

ADS80-SH82, SN1300 certification number: 763806_1300_090130-1.
ADS80-SH82, SN1301 certification number: 763806_1301_080926-1.
ADS80-SH82, SN1324 certification number: 763806_1300_100216-1.
ADS80-SH81, SN1318 certification number: 763806_1318_091209-1.

Each line is approximately 12,000 pixels wide and 200,000 pixels long. The Leica camera collects 11 bands of imagery at 16 bit. ASI extracts 3 bands of panchromatic for use in the aero-triangulation. Four nadir bands (RGBN) are extracted to be used in rectification. Each camera uses Novetel OEM4 GPS units to collect IMU data.

Upon completion of flight lines the imagery is reviewed in the field/office to ensure it meets contract specifications. ABGPS/IMU data is processed using Leica IPAS Pro and GrafNav programs. The aero-triangulation was completed with the ABGPS/IMU data only. Pass-points were generated at 5% intervals along each line and 7 regions across each flight line. Tie-points were generated at 5% intervals with 2 regions between flight lines. Analysis of report documents as well as visual inspection along imagery line overlaps are completed to ensure accuracies of the aero-triangulation.

Thirty-meter NEDs were downloaded from the USGS Data Gateway website for use on this project. No corrections or changes were made to the NED data. Ortho rectification was completed using Leica XPROsoftware version 4.2. The NEDs were used for the elevation data in the ortho production. An initial review of the raw orthos against control points was completed at this stage. Eighty-nine control points were used as check control on the project. Of those, fifty-eight points were supplied by the USDA from the 2008 Minnesota NAIP project. The remaining points were collected from secondary sources in the project state. A final accuracy check was completed on the final DOQQS. The RMSE values will be determined at the project completion.

Once the data passed accuracy requirements, Inpho OrthoVista (4.4) was used for seaming the ortho lines together and adjusting the tones of the imagery. The DOQQs were cut and renamed directly from OrthoVista program. At this stage the DOQQs are output as 8 bit imagery. Once the DOQQs were cut, a batch file was used to assign the majority date of the DOQQ imagery to the file name. Contractor made all attempts to match tone requirements of the project. Variations of the ground cover may cause some deviation from the specifications. ASI designed a batch routine to check and adjust the tones of each DOQQ to the desired tone values. DOQQs and CCMs were reviewed in either Erdas Imagine or ESRI ArcMap. Each data set was reviewed for tone, artifacts, seamline issues, and accuracy.

Lizardtech GeoExpress (7.0.3) was used to create the CCM image file. Each mosaic was made with RGB bands and has an approximate 1:15 compression level. CCM metadata was created using Arcmap and routines from our database. Erdas Imagine is used to insert headers into the files and create the aux files for the data. Exported dxf seamlines from OrthoVista were taken into ArcMap to generate seamline polygons. Each polygon was populated with the required attributes. CCM data was written to CD/DVD using Gear Software. DOQQs were transported on internal hard drives.
Source Scale Denominator 12000
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 6; ESRI ArcCatalog 9.2
Geographic Reference for Tabular Data
Spatial Object Type Raster
Vendor Specific Object Types
Tiling Scheme County
 
Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme UTM
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Meters
Distance Resolution
Altitude Datum Not applicable
Depth Datum Not applicable
Cell Width 1
Cell Height 1
UTM Zone Number 14 or 15
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview Imagery has 24-bit pixels, 3 band color (RGB) represent brightness values 0 - 255.
Entity and Attribute Detailed Citation None
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Minnesota Geospatial Information Office (MnGeo)
Publication Date 11/2010
Contact Person Information Nancy Rader
GIS Data Coordinator
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street, Room 300
St. Paul, MN 55155
Phone: 651-201-2489
FAX: 651-296-3698
E-mail: clearing.house@state.mn.us
Distributor's Data Set Identifier NAIP 2010
Distribution Liability 1. FSA Liability Statement: 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).

2. MnGeo: DISTRIBUTION LIABILITY STATEMENT
For data or maps delivered online or by physical media by
the Minnesota Geospatial Information Office

Limitations: Although extensive effort has been made to produce error-free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. Users should consult available data documentation (metadata) for this particular data to determine limitations and the precision to which the data depict distance, direction, location or other geographic characteristics. Data may be subject to change without prior notification.

No warranty: Data is provided as is, without any warranty whatsoever, including but not limited to any warranty as to performance, merchantability or fitness for any particular purpose.

Liability: The entire risk as to the results of the use of this data is assumed by the user. MnGeo is not responsible for any interpretation or conclusions made by those who acquire or use it. MnGeo shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third-party claims resulting from the use of this data, even if MnGeo has been advised of the possibility of such potential loss or damage. In states that do not allow the exclusion or limitation of incidental or consequential damages, this data may not be used.

Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.

Data delivered on electronic media: If data has been requested from MnGeo on magnetic media, CD or any other physical media, MnGeo will deliver it in the computer-readable format agreed upon with the requestor. MnGeo will reissue data if it is unreadable by correctly adjusted computer input devices or when the media is delivered in a damaged condition. Requests for reissue of this digital data product must be made within 30 days of the date shipped from MnGeo.
Transfer Format Name MrSID
Transfer Format Version Number
Transfer Size Varies by county. Each county file is several hundred megabytes; the size is listed on the download page. Large counties may be distributed as 2 or more files.
Ordering Instructions The county mosaics are available free online by clicking below after Online Linkage. This link will take you to a webpage that explains more about the MrSID file format and contains direct links to:

1. View the files seamlessly via a WMS service without having to download the files.

2. Download each county file from either MnGeo or the Natural Resources Conservation Service.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.
 
Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date 11/09/2010
Contact Person Information Nancy Rader, GIS Data Coordinator
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street, Room 300
St. Paul, MN 55155
Phone: 651-201-2489
FAX: 651-296-3698
E-mail: clearing.house@state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.gis.state.mn.us/stds/metadata.htm


This page last updated: 11/09/2010