NAIP_1M_CLRIR_2008
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: VT Center for Geographic Information
- Publication_Date: 20090430
- Publication_Time: unknown
- Title: NAIP_1M_CLRIR_2008
- Edition: 2008A
- Geospatial_Data_Presentation_Form: raster digital data
- Series_Information:
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- Series_Name: NAIP imagery (2008) - statewide
- Issue_Identification: 2008A
- Publication_Information:
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- Publication_Place: Waterbury VT 05676
- Publisher: VT Center for Geographic Information
- Other_Citation_Details: Tile Structure - QQUAD
- Citation:
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- Citation_Information:
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- Originator:
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USDA-FSA-APFO Aerial Photography Field Office and 3001 Inc. (contractor)
- Publication_Date: 20090430
- Title: NAIP Digital Ortho Photo Image
- Geospatial_Data_Presentation_Form: remote-sensing image
- Publication_Information:
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- Publication_Place: Salt Lake City, Utah
- Publisher: USDA-FSA-APFO Aerial Photography Field Office
- Description:
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- Abstract:
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The NAIP_1M_CLRIR_2008 dataset is a 1:40000 scale (1 meter) truecolor and
infrared (4 band) NAIP imagery product acquired during the summer of 2008.
This data set contains imagery from the National Agriculture
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
of ortho imagery within one year of acquisition. NAIP provides
four main products: 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); 2 meter GSD
ortho imagery rectified to within +/- 10 meters of reference
DOQQs; 1 meter GSD ortho imagery rectified to within +/- 6
meters to true ground; and, 2 meter GSD ortho imagery rectified
to within +/- 10 meters to true ground. 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 quarter quads
are formatted to the UTM coordinate system using NAD83. NAIP
imagery may contain as much as 10% cloud cover per tile.
- Purpose:
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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. With an annual cycle, NAIP is also used
for disaster response often providing the most current pre-event
imagery. While suitable for a variety of uses the 2 meter
GSD NAIP imagery is primarily intended to assess crop condition
and compliance to USDA farm program conditions. The 2
meter imagery is generally acquired only for agricultural areas
within state projects.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 200808
- Currentness_Reference: Ground Condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: Irregular
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -72.9375
- East_Bounding_Coordinate: -72.8750
- North_Bounding_Coordinate: 43.0000
- South_Bounding_Coordinate: 42.9375
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: imageryBaseMapsEarthCover
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: farming
- Theme_Keyword: Digital Ortho rectified Image
- Theme_Keyword: Ortho Rectification
- Theme_Keyword: Quarter Quadrangle Centered
- Theme_Keyword: NAIP
- Theme_Keyword: Aerial Compliance
- Theme_Keyword: Compliance
- Place:
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- Place_Keyword_Thesaurus: Geographic Names Information System
- Place_Keyword: VT
- Access_Constraints:
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VCGI and the State of VT make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
- Use_Constraints:
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For all products, services, Internet Website, and data, excepting digital or hardcopy orthophotography collected through the VT Tax Department’s Mapping Program, the direct, non-value added, reproduction of State of Vermont or VCGI’s products, services, Website, or data with intent to sell is prohibited without the written consent of VCGI. For all digital or hardcopy orthophotography collected through the VT Tax Department’s Mapping Program, copying, reprinting, duplicating, selling or attempting to sell is prohibited. Vermont Statute 32 V.S.A. § 3409 permits a fine, not to exceed $1,000.00, for any person violating this prohibition.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: VT Center for Geographic Information
- Contact_Address:
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- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Contact_Electronic_Mail_Address: vcgi@vermont.gov
- Hours_of_Service: 9am - 5pm, M-F
- Data_Set_Credit:
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USDA-FSA-APFO Aerial Photography Field Office, 3001 Inc. (NAIP contractor), VCGI,
UVM Spatial Analysis Lab (SAL), and other contributors to the VT NAIP 2008 project.
- Security_Information:
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- Security_Classification_System: N/A
- Security_Classification: Unclassified
- Security_Handling_Description: No Security Considerations
- Native_Data_Set_Environment: Unknown
- Data_Quality_Information:
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- Logical_Consistency_Report:
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NAIP 3.75 minute tile file names are based
on the USGS quadrangle naming convention.
- Completeness_Report: None
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: FSA Digital Orthophoto Specs.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator:
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USDA-FSA-APFO Aerial Photography Field Office and 3001 Inc. (contactor)
- Publication_Date: 20090430
- Title: NAIP 2008 Vermont
- Geospatial_Data_Presentation_Form: remote-sensing image
- Type_of_Source_Media: Digital Linear Tape (DLT)
- Source_Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 200808
- Source_Currentness_Reference: Aerial Photography Date for aerial photo source.
- Source_Citation_Abbreviation: Georectifed Image
- Source_Contribution: Digital Georectifed Image.
- Process_Step:
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- Process_Description:
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The imagery was collected at a flying height of 28000 ft
above mean terrain with 25% sidelap using an ADS40 digital
sensor, giving the collected data nominal ground sampling
distance of 0.9 meters. Collected data was downloaded to
portable hard drives and shipped to the processing
facility daily. Airborne GPS / IMU data was processed
and reviewed to ensure sufficient accuracy for project
requirements. Planar rectified images were generated
from the collected data for use in image quality review.
The planar rectified images were generated at five meter
resolution using a two standard deviation histogram
stretch. Factors considered during this review included
but were not limited to the presence of smoke and/or
cloud cover, contrails, light conditions and sun glint.
When necessary, image strips identified as not meeting
image quality specifications were re-flown to obtain
suitable imagery.
Aerotriangulation blocks were defined primarily by order
of acquisition and consisted of two to twelve strips.
Image tie points points providing the observations for
the least squares bundle adjustment were selected from
the images using an autocorrelation algorithm.
Photogrammetric control points consisted of photo
identifiable points established using static and
rapid-static GPS techniques. Final coordinate values
were calculated using National Geodetic Survey (NGS)
Online Positioning User Service (OPUS) or the NGS
Online Positioning User Service-Rapid Static (OPUS-RS).
The control points were loaded in to a softcopy
workstation and measured in the acquired image strips.
A least squares bundle adjustment of image pass points,
control points and the ABGPS was performed to develop
an aerotriangulation solution for each block. Precedence
was given to the photo identifiable control points over
control provided by the ABGPS solution in the bundle
adjustment.
The triangulated strips were ortho-rectified to the
USGS NED DEM for the project area. The images were
re-sampled from the raw resolution of 0.9 meters to
the required resolution of 1.0 meters using a cubic
convolution filter during the process. The red, green,
blue, and NIR bands were combined to generate a final
ortho-rectified image strip. The ADS40 sensor collects
twelve bit image data which requires radiometric
adjustment for output in standard eight bit image
channels. The ortho-rectified image strips were
produced with the full 12 bit data range, allowing
radiometric adjustment to 8 bit range to be performed
on a strip by strip basis during the final mosaicing steps.
The imagery was mosaicked using a combination of
automated and manual seamline generation. The 12 bit
data range was adjusted for display in standard eight
bit image channels by defining a piecewise histogram
stretch. A constant stretch was defined for each
image collection period, and then strip by strip
adjustments were made as needed to account for changes
in sun angle and azimuth during the collection period.
Strip adjustments were also made to match the strips
histograms as closely as possible to APFO specified
histogram metrics and color balance requirements.
Automated balancing algorithms were applied to account
for bi-directional reflectance as a final step before
the conversion to 8 bit data range. APFO specified
DOQQs were extracted from the final mosaic in GeoTIFF
format.
Each DOQQ clipped from the mosaic was reviewed for
conformance to APFO histogram metrics and color balance
parameters using automated procedures. Images flagged
for non-conformance were reviewed and adjusted manually
on an image by image basis to bring them into conformance.
In extreme cases, such as when a DOQQ was comprised
primarily of water, modification of the histogram
metrics to match targets caused severe degradation
of image quality. In these cases, the water was
masked out and histogram adjustments were applied to
land. GeoTIFF tags for the appropriate UTM zone were
then applied to all images.
- Process_Date: 20090430
- Process_Step:
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- Process_Description:
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The GeoTIFFs were generated by reprojecting the original UTM files via ERDAS IMAGINE.
The work was completed b Jarlath O'Neil-Dunne at the UVM Spatial Analysis Lab (SAL).
The images were then cropped to the quarter quad "envelope" by VCGI to eliminate nodata areas.
- Process_Date: 20090701
- Process_Step:
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- Process_Description:
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UVM Spatial Analysis Lab (SAL) generated JPEG2000 compressed (20x) files from the reprojected GeoTIFFs.
- Process_Date: 20090715
- Process_Step:
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- Process_Description: VCGI posted data to VCGI Image Library for download.
- Process_Date: 20090801
- Cloud_Cover: 5%
- Spatial_Data_Organization_Information:
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- Indirect_Spatial_Reference: Raster
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Pixel
- Row_Count: 1
- Column_Count: 1
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: State Plane Coordinate System
- State_Plane_Coordinate_System:
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- SPCS_Zone_Identifier: 4400
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.999964
- Longitude_of_Central_Meridian: -72.500000
- False_Easting: 500000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.001
- Ordinate_Resolution: 0.001
- Planar_Distance_Units: Meters
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 1 / 298.25722210
- Entity_and_Attribute_Information:
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- Overview_Description:
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- Entity_and_Attribute_Overview: 32-bit pixels, 4 band color(RGBIR) values 0 - 255
- Entity_and_Attribute_Detail_Citation: None
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
-
- Contact_Organization: VT Center for Geographic Information
- Contact_Address:
-
- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Contact_Electronic_Mail_Address: vcgi@vermont.gov
- Hours_of_Service: 9am - 5pm, M-F
- Resource_Description: NAIP_1M_CLRIR_2008
- Distribution_Liability:
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VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: JPEG2000 and GeoTIFF
- Format_Specification: JPEG2000 (20x compression) and GeoTIFF
- Format_Information_Content: geospatial data
- File_Decompression_Technique: Image viewer
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name:
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https://maps.vcgi.vermont.gov/gisdata/vcgi/imagery/NAIP/1M/CLRIR/2008/COMP/
- Access_Instructions:
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Download compressed (JPEG2000) from web site. Uncompressed
GeoTIFF available on offline media.
- Offline_Option:
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- Offline_Media: USB drive
- Fees:
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No charge when downloading from the internet, and when no custom processing is required.
- Ordering_Instructions: Send an email describing data request to vcgi@vermont.gov
- Turnaround: About 5 days.
- Custom_Order_Process: Send an email describing data request to vcgi@vermont.gov
- Technical_Prerequisites: GIS Software
- Available_Time_Period:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 20090701
- Time_of_Day: Unknown
- Metadata_Reference_Information:
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- Metadata_Date: 20090624
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: VT Center for Geographic Information
- Contact_Person: GIS Database Administrator
- Contact_Address:
-
- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Metadata_Standard_Name: FGDC Content Standards for Digital Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: Local time
- Metadata_Access_Constraints: None
- Metadata_Use_Constraints: None
- Metadata_Security_Information:
-
- Metadata_Security_Classification_System: N/A
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: No security considerations
Generated by mp version 2.9.22 on Thu Aug 25 20:52:21 2022