NAIP_0_6M_CLRIR_2019

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: VT Center for Geographic Information
Publication_Date: 20210615
Publication_Time: unknown
Title: NAIP_0_6M_CLRIR_2019
Edition: 2019A
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: NAIP imagery (2019) - portions of Vermont
Issue_Identification: 2019A
Publication_Information:
Publication_Place: Montpelier, VT
Publisher: VT Center for Geographic Information
Other_Citation_Details: Tile Structure - QQUAD
Citation:
Citation_Information:
Originator: USDA-FSA-APFO Aerial Photography Field Office
Publication_Date: 20191018
Title: NAIP Digital Georectified Image
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Salt Lake City, Utah
Publisher: USDA-FSA-APFO Aerial Photography Field Office
Description:
Abstract:
The NAIP_0_6M_CLRIR_2019 dataset is a (60 centimeter) truecolor and infrared (4 band) NAIP imagery product (quarter-quadrangle) acquired during the summer of 2019 by the USDA-FSA-APFO NAIP program, then reprojected to VT State Plane Meters and cropped to the USGS quarter quad boundary by VCGI.
The 2018 imagery DOES NOT include the entire state of Vermont. The acquisition contractor was unable to acquired the entire state over a single season. Therefore the remainder of the state was acquired during the summer of 2019. Refer to NAIP_0_6M_CLRIR_2019 if you're looking for the latest NAIP for the remainder of the state.
This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs. Ortho imagery provides an effective, intuitive means of communication about farm program administration between FSA and stakeholders. New technology and innovation is identified by fostering and maintaining a relationship with vendors and government partners, and by keeping pace with the broader geospatial community. As a result of these efforts the NAIP program provides three main products: DOQQ tiles, Compressed County Mosaics (CCM), and Seamline shape files The Contract specifications for NAIP imagery have changed over time reflecting agency requirements and improving technologies. These changes include image resolution, horizontal accuracy, coverage area, and number of bands. In general, flying seasons are established by FSA and are targeted for peak crop growing conditions. The NAIP acquisition cycle is based on a minimum 3 year refresh of base ortho imagery. The tiling format of the NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 pixel buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using the North American Datum of 1983. NAIP imagery may contain as much as 10% cloud cover per tile.
Purpose:
Enabled access to NAIP 2019 imagery in VT State Plane Meters NAD83. 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 and 1/2 meter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The 1 meter and 1/2 meter NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies that use the imagery for a variety of purposes including land use planning and natural resource assessment. The NAIP is also used for disaster response. While suitable for a variety of uses, prior to 2007 the 2 meter GSD NAIP imagery was primarily intended to assess "crop condition and compliance" to USDA farm program conditions. The 2 meter imagery was generally acquired only for agricultural areas within state projects.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20190823
Ending_Date: 20191005
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.5
East_Bounding_Coordinate: -71.4375
North_Bounding_Coordinate: 45.0625
South_Bounding_Coordinate: 42.6875
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: farming
Theme_Keyword: Digital Ortho rectified Image
Theme_Keyword: Ortho Rectification
Theme_Keyword: Quarter Quadrangle
Theme_Keyword: NAIP
Theme_Keyword: Aerial Compliance
Theme_Keyword: Compliance
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: VT
Access_Constraints: There are no limitations for access.
Use_Constraints:
None. VCGI, State of VT, and the USDA-FSA-APFO Aerial Photography Field Office 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. The USDA-FSA Aerial Photography Field office asks to be credited in derived products.
Point_of_Contact:
Contact_Information:
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
Data_Set_Credit: USDA-FSA Aerial Photography Field office, VCGI
Security_Information:
Security_Classification_System: N/A
Security_Classification: Unclassified
Security_Handling_Description: No Security Considerations
Data_Quality_Information:
Logical_Consistency_Report:
NAIP 3.75 minute tile file names are based on the USGS quadrangle naming convention.
Completeness_Report: None
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
NAIP horizontal accuracy specifications have evolved over the life of the program. From 2003 to 2004 the specifications were as follows: 1-meter GSD imagery was to match within 3-meters, and 2-meter GSD to match within 10 meters of reference imagery. For 2005 the 1-meter GSD specification was changed to 5 meters matching the reference imagery. In 2006 a pilot project was performed using true ground specifications rather than reference imagery. All states used the same specifications as 2005 except Utah, which required a match of +/- 6 meters to true ground. In 2007 all specifications were the same as 2006 except Arizona used true ground specifications and all other states used reference imagery. In 2008 and subsequent years no 2-meter GSD imagery was acquired and all specifications were the same as 2007 except approximately half of the states acquired used true ground specifications and the other half used reference imagery. The 2008 states that used absolute ground control were; Indiana, Minnesota, New Hampshire, North Carolina, Texas, Vermont, and Virginia. Beginning in 2009, all NAIP imagery acquisitions used the +/- 6 meters to ground and in 2016 the specification was changed to +/- 4 meters to true ground.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.228599
Horizontal_Positional_Accuracy_Explanation:
Tested 0.228599 meters (0.75 feet) RMSEx. The RMSEx of the imagery was calculated using 22 independent checkpoints.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.182213
Horizontal_Positional_Accuracy_Explanation:
Tested 0.182213 meters (0.6 feet) RMSEy. The RMSEy of the imagery was calculated using 22 independent checkpoints.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.292334
Horizontal_Positional_Accuracy_Explanation:
Tested 0.292334 meters (0.96 feet) RMSEr. The RMSEr of the imagery was calculated using 22 independent checkpoints.
Lineage:
Process_Step:
Process_Description:
DOQQ Production Process Description; USDA FSA APFO NAIP Program 2019; State: Vermont.
The imagery was collected using the following digital sensors: Leica ADS-100 (Serial Number 10541), Leica ADS-100 (Serial Number 10542),
with Flight and Sensor Control Management System (FCMS) firmware: v4.57,
Cameras are calibrated radiometrically and geometrically by the manufacturer and are all certified by the USGS.
Collection was performed using a combination of the following twin-engine aircraft with turbines flying at 16,457 ft above mean terrain.
Plane types: C441, PA31,
Tail numbers: N262AS, N441MD,
With these flying heights, there is a 30% sidelap, giving the collected data nominal ground sampling distance of 0.40 meters at 16,457 feet.
Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, Near-Infrared and Panchromatic image bands were collected.
The ADS 100 has the following band specifications: Red 619-651, Green 525-585, Blue 435-495, Near Infrared 808-882, all values are in nanometers.
Collected data was downloaded to portable hard drives and shipped to the processing facility daily. Raw flight data was extracted from external data drives using XPro software. Airborne GPS / IMU data was post-processed using Inertial Explorer software and reviewed to ensure sufficient accuracy for project requirements.
Using Xpro software, planar rectified images were generated from the collected data for use in image quality review. The planar rectified images were generated at native 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, sun glint and any sensor or hardware-related issues that potentially could result in faulty data. When necessary, image strips identified as not meeting image quality specifications were re-flown to obtain suitable imagery.
Aero triangulation blocks were defined primarily by order of acquisition and consisted of four to seventeen strips. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an auto correlation algorithm. Photogrammetric control points consisted of photo identifiable control points, collected using GPS field survey techniques. The control points were loaded into 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 aero triangulation solution for each block using XPro software.
Upon final bundle adjustment, the triangulated strips were ortho-rectified to the digital elevation model (DEM). The most recent USGS 10-meter DEMs were used in the rectification process.
Positional accuracy was reviewed in the rectified imagery by visually verifying the horizontal positioning of the known photo-identifiable survey locations using ArcGIS software.
The red, green, blue, and infrared bands were combined to generate a final ortho-rectified image strip. The ADS sensor collects fourteen 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 16 bit data range, allowing radiometric adjustment to the 8 bit range to be performed on a strip by strip basis during the final mosaicking steps.
The 16 bit data range was adjusted for display in standard eight bit image channels by defining a piecewise histogram stretch using OrthoVista Radiometrix software. 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. The imagery was mosaicked using manual seam line generation in OrthoVista.
Process_Date: 20191017
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Monica Chism
Contact_Organization: Quantum Spatial, Inc.
Contact_Address:
Address_Type: mailing and physical
Address: 523 Wellington Way
City: Lexington
State_or_Province: KY
Postal_Code: 40503
Country: USA
Contact_Voice_Telephone: 859-277-8700
Contact_Facsimile_Telephone: 859-277-8901
Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
Process_Step:
Process_Description:
VCGI acquired a statewide set of 2019 60cm NAIP imagery from USDA-FSA-APFO. VCGI reprojecting the original UTM files to VT State Plane Coordinate System (NAD83) using Global Mapper and then cropped them to the quarter quads to eliminate nodata areas.
Process_Date: 20210425
Process_Time: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steve Sharp
Contact_Organization: VCGI
Process_Step:
Process_Description:
VCGI generated JPEG2000 compressed files from the reprojected GeoTIFFs (using Global Mapper).
Process_Date: 20210425
Process_Time: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steve Sharp
Contact_Organization: VCGI
Process_Step:
Process_Description:
Loaded data into VCGI's Image Library and registered with VT Open Geodata Portal to enable downloads. Added imagery to NAIP and Best of imagery services.
Process_Date: 20210615
Process_Time: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steve Sharp
Contact_Organization: VCGI
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Raster
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 1
Column_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4400
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999964
Longitude_of_Central_Meridian: -72.500000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: Meters
Geodetic_Model:
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:
Overview_Description:
Entity_and_Attribute_Overview: 32-bit pixels, 4 band color(RGBIR) values 0 - 255
Entity_and_Attribute_Detail_Citation: None
Distribution_Information:
Distributor:
Contact_Information:
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: VIL_datasetname
Distribution_Liability:
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:
Digital_Form:
Digital_Transfer_Information:
Format_Name: JPEG2000 and GeoTIFF
Format_Specification: JPEG2000 and GeoTIFF
Format_Information_Content: geospatial data
File_Decompression_Technique: Image viewer
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://maps.vcgi.vermont.gov/gisdata/vcgi/imagery/NAIP/0_6M/CLRIR/2019/COMP/
Access_Instructions: Download from Vermont Geodata Portal.
Fees: No charge when downloading from the internet.
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:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20210615
Time_of_Day: Unknown
Metadata_Reference_Information:
Metadata_Date: 20210615
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