Curry County, 2024 NAIP NC Ortho Mosaic
Metadata from the RGIS Metadata Repository
Identification Information
- Title Curry County, 2024 NAIP NC Ortho Mosaic
- Date 2025-03-31
- Date Type Publication
- Cited Responsible Party
-
- Organization Name United States Department of Agriculture, Farm Production and
Conservation Business Center, Geospatial Enterprise Operations
(FPAC-BC-GEO
- Role identify
- Presentation Form raster digital data
- Abstract This data set contains imagery from the National Agriculture
Imagery Program (NAIP). The 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 NAIP provides 60 centimeter ground sample distance (GSD) ortho imagery rectified
to a horizontal accuracy within +/- 4 meters of reference digital ortho quarter quads
(DOQQ's) from the National Digital Ortho Program (NDOP) or from the National
Agriculture Imagery Program (NAIP). The tiling format of NAIP imagery is based on a
3.75' x 3.75' quarter quadrangle with a 300 pixel buffer on all four sides. The NAIP
imagery is formatted to the UTM coordinate system using the North American Datum of
1983 (NAD83). The 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. Two
types of compression may be used for NAIP imagery: MrSID and JPEG 2000. The target
value for the compression ratio is 40:1 for imagery.
- Purpose The NAIP imagery is typically 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 and 1/2 meter GSD product provides an ortho image base for Common
Land Unit boundaries and other data sets. The 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. The NAIP is also used for disaster response often
providing the most current pre-event imagery.
- Status Complete
- Point of Contact
-
- Individual Name
- Organization Name United States Department of Agriculture, Farm
Production and Conservation Business Center, Geospatial Enterprise
Operations (FPAC-BC-GEO)
- Position Name
- Role Point of contact
- Voice 801-844-2922
- Facsimile 801-956-3653
- Address
-
- Delivery Point 125 S. State St. Suite 6416
- City Salt Lake City
- Administrative Area Utah
- Postal Code 84138
- Country USA
- Electronic Mail Address apfo.sales@slc.usda.gov
- Maintenance and Update Frequency Irregular
- Descriptive Keywords imageryBaseMapsEarthCover, farming, Digital Ortho rectified Image, Mosaic, Quarter Quadrangle, Ortho Rectification, Compression,
MrSID, JPEG 2000, NAIP, Compliance, Aerial Compliance
- Access Constraints There are no limitations for access.
- Use Constraints Access Constraints: There are no limitations for access. Use
Constraints: None, The United States Department of Agriculture, Farm Production
and Conservation Business Center, Geospatial Enterprise Operations
(FPAC-BC-GEO) asks to be credited in derived products. If defects are found in
the NAIP imagery during the 1 year 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.
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).
- Language English
- Topic Category
- Extent
-
- Geographic Bounding Box
-
- West Bound -103.747178
- East Bound -102.999136
- North Bound 35.010946
- South Bound 34.23908
- Temporal Extent
-
- DateTime 2022-05-21
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Distribution Information
- Distributor
-
- Individual Name
- Organization Name Earth Data Analysis Center
- Position Name Clearinghouse Manager
- Role Point of contact
- Voice 505-277-3622 ext. 230
- Facsimile 505-277-3614
- Address
-
- Delivery Point MSC01 1110
- Delivery Point 1 University of New Mexico
- City Albuquerque
- Administrative Area NM
- Postal Code 87131-0001
- Country USA
- Electronic Mail Address clearinghouse@edac.unm.edu
- Transfer Options
-
- Online Resource Multi-resolution Seamless Image Database (MrSID)
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Spatial Reference Information
- Spatial References
-
- Spatial Reference NAD83 UTM zone 13N
-
- Online Reference EPSG:4269
- Spatial Reference GRS 1980
-
- Online Reference EPSG:7019
- Spatial Reference Universal Transverse Mercator, 13
-
- Online Reference EPSG:26913
- Indirect Spatial Reference New Mexico
- Row Count
- Column Count
- Vertical Count
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Data Quality Information
- Attribute Accuracy Report
-
- Report Unknown
- Quantitative Attribute Accuracy Assessment
-
- Attribute Accuracy Value
- Attribute Accuracy Explanation
- Horizontal Positional Accuracy Report
-
- Report FSA Digital Orthophoto Specs.
- Quantitative Horizontal Positional Accuracy Assessment
-
- Horizontal Positional Accuracy Value
- Horizontal Positional Accuracy Explanation
- Vertical Positional Accuracy Report
-
- Report N/A 2d only
- Quantitative Vertical Positional Accuracy Assessment
-
- Vertical Positional Accuracy Value
- Vertical Positional Accuracy Explanation
- Logical Consistency Report NAIP 3.75 minute tile file names are based on the USGS quadrangle naming
convention.
- Completeness Report None
- Lineage
-
- Process Step
-
- Process Description Flight planning was performed in Leica MissionPro over
a buffered boundary covering DOQQ extents provided by the USDA. A 500m
reduced resolution DEM file was used to determine ground heights. A
targeted flight altitude of approximately 16,000 feet above ground level
for acquisition with sidelap of 27% was used for flight planning
parameters. Five Cessna Conquests and a Cessna 414 were utilized for
acquisition, the seamline shapefile clarifies which aircraft were used
for a given area. All aircraft were equipped with Leica ADS100 systems
for data capture. The Leica ADS100 pushbroom sensor has been calibrated
by the manufacturer as well as validated against a local calibration
range. The calibration includes measuring the radiometric and geometric
properties of the camera. These data are used in the Post Processing
Software to eliminate the radiometric and geometric distortion. All
aerial imagery was collected with associated GPS/IMU data. ADS collection
requires high quality IMU data for processing and was critical for early
access hosting of digital data to the web for USDA interim access and
review. After post processing was complete, all imagery was triangulated
using Leica XPro in which the airborne GPS data was constrained to
expected limits. To validate the accuracy of the block adjustment derived
from GPS/IMU, sensor parameters and conjugate point measurements, photo
identifiable ground control points were field surveyed within each State.
These points were surveyed using GPS techniques to produce coordinates
that are accurate to +/- 0.25 meters RMSE in XYZ. The GPS surveying
techniques utilized assured that the coordinates are derived in the
required project datum and relative to an approved National Reference
System. If the block does not fit the control points within
specifications the pass and tie points were reviewed for blunders and
weak areas. If, after these corrections were made, the block still does
not fit the control well the GPS and IMU processing were reviewed. Once
the block has proper statistics and fits the control to specifications,
the final bundle adjustment was made. As AT points are frequently on
man-made and other vertical features not included in the DEM, these ortho
points can only be used to indicate regions of error by the clusters of
points that predict excessive horizontal displacement. The final
adjustments assure a high quality relative adjustment and a high quality
absolute adjustment limited to the airborne GPS data accuracy. This
process assures the final absolute accuracy of all geopositioned imagery.
Both signalized and photo identified ground control were used to QC and
control the IMU/GPS based aerial triangulation bundle block solution.
Surdex Grouping Tool provides real-time updates of the USDA GEO Image
Metrics. The image technician adjusts image correction parameters to
bring the radiometric characteristics of large groups of images within
the Image Metrics ranges. For each project area the highest resolution
DEM or LiDAR was obtained and utilized for rectification of captured
imagery. A visual inspection of the final DEM using color cycled
classification by elevation and a shaded relief was performed to check
for gaps, corruption and gross errors. The predicted horizontal error for
each point was added as an attribute in the SURDEX enterprise database.
An operator reviews ortho seams in areas these predicted errors indicate
horizontal error in excess of the contract specifications. Any imagery
errors introduced by source DEM required patching from an alternate
perspective or strip of photography. Processing hardware used included
various brands of survey grade GPS receivers, various brands and models
of computers, calibrated monitors and various brands of monitor
calibration colorimeters. Leica XPro was used for post processing of ADS
pushbroom data, triangulation and orthorectification. SURDEX software was
used to color correct and remove bidirectional reflectance, vignetting
and other illumination trends. USDA GEO Image Metrics are measured and
images corrected to conform to the Image Metrics using SURDEX software.
GPS/IMU data was reduced to projected coordinates in the appropriate UTM
zone using Inertial Explorer software from Novatel. Aerial Triangulation
and orthorectification was performed using Leica XPro. SURDEX software
was used to adjust for minor radiometric variation between adjacent
images. SURDEX software was used to calculate the optimal seam path,
check seam topology and create master tiles. SURDEX ortho software
generates occlusion/smear polygons used during seam review of steep
terrain. SURDEX software was used to visually inspect master tiles for
seam and image defects. SURDEX software was used to project and cut final
DOQQ image files from masters. SURDEX software was used to create CCM
metadata. Lizardtech GeoExpress version 10.0.0.5011 was used to create
the CCM image file. SURDEX software was used to perform final formatting,
QC and naming of the DOQQ. USGS metadata parser software was used to
validate the metadata. Various versions of Microsoft Windows were used in
all phases of production. Grouping Tool was used again after DOQQ and CCM
production to provide a quality assurance check. Individual DOQQ and CCM
may not meet the USDA GEO Image Metrics ranges due to land cover. The
goal is to have the state as a whole meet the Image Metrics. All products
are reviewed by independent personnel prior to delivery. The delivery is
checked for omissions, commissions, naming, formatting, specification
compliance and data integrity.
- Process Date 2022-09-29
- Process Time
- Process Contact
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Metadata Reference Information
- File Identifier eebd9635-f8d8-4c40-b77e-95a22e34b0ae
- Metadata Language English
- Hierarchy Level Dataset
- Date Stamp 2025-07-11
- Metadata Standard Name ISO 19115:2003
- Metadata Standard Version 1.0
- Metadata Contact
-
- Individual Name
- Organization Name Earth Data Analysis Center
- Position Name Clearinghouse Manager
- Role Point of contact
- Voice 505-277-3622 ext. 230
- Facsimile 505-277-3614
- Address
-
- Delivery Point MSC01 1110
- Delivery Point 1 University of New Mexico
- City Albuquerque
- Administrative Area NM
- Postal Code 87131-0001
- Country USA
- Electronic Mail Address clearinghouse@edac.unm.edu
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