2015 Maine NAIP Digital Ortho Photo Imagery

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: USDA-FSA-APFO Aerial Photography Field Office

Publication_Date: 20151117

Title: 2015 Maine NAIP Digital Ortho Photo Imagery

Geospatial_Data_Presentation_Form: remote-sensing image

Publication_Information:

Publication_Place: Salt Lake City, Utah

Publisher: USDA-FSA-APFO Aerial Photography Field Office

Online_Linkage:

https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=8400

Online_Linkage: https://coast.noaa.gov/htdata/raster1/imagery/ME_NAIP_2015_8400

Online_Linkage: https://coast.noaa.gov/dataviewer

Description:

Abstract:

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:

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:

Single_Date/Time:

Calendar_Date: 20160719

Currentness_Reference: Ground Condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Irregular

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -71.299

East_Bounding_Coordinate: -66.799

North_Bounding_Coordinate: 47.589

South_Bounding_Coordinate: 42.833

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: ME

Place_Keyword: Somerset

Place_Keyword: 23025

Place_Keyword: ME025

Place_Keyword: SOMERSET CO ME FSA

Place_Keyword: 4506901

Access_Constraints: There are no limitations for access.

Use_Constraints:

None. The USDA-FSA Aerial Photography Field office asks to be credited in derived products.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Aerial Photography Field Office (APFO)

Contact_Address:

Address_Type: mailing and physical

Address: 2222 West 2300 South

City: Salt Lake City

State_or_Province: Utah

Postal_Code: 84119-2020

Country: USA

Contact_Voice_Telephone: 801-844-2922

Contact_Facsimile_Telephone: 801-956-3653

Contact_Electronic_Mail_Address: apfo.sales@slc.usda.gov

Browse_Graphic:

Browse_Graphic_File_Name: None

Browse_Graphic_File_Description: None

Browse_Graphic_File_Type: None

Native_Data_Set_Environment: Unknown

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 where; Indiana, Minnesota, New Hampshire, North Carolina, Texas, Vermont, and Virginia. From 2009 to present all NAIP imagery acquisitions used the +/- 6 meters to ground specification.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: USDA-FSA-APFO Aerial Photography Field Office

Publication_Date: 20151117

Title: KURE BEACH, NE

Geospatial_Data_Presentation_Form: remote-sensing image

Type_of_Source_Media: UnKnown

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20150918

Source_Currentness_Reference: Aerial Photography Date for aerial photo source.

Source_Citation_Abbreviation: Georectified Image

Source_Contribution: Digital Georectified Image.

Process_Step:

Process_Description:

DOQQ Production Process Description
USDA FSA APFO NAIP Program 2015
State: Maine

The imagery was collected using the following digital sensors:
Leica ADS-100 (Serial Number 10539)
Leica ADS-100 (Serial Number 10541)
Leica ADS-100 (Serial Number 10542)
with Flight and Sensor Control Management
System (FCMS) firmware 4.40.
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:
Turbines flying at 16,500 ft above mean terrain
(tail number: C441 N441CJ)
(tail number: AC90 N690LN)
(tail number: AC90 N910FC)
With these flying heights, there is a 23% sidelap,
giving the collected data nominal ground sampling distance
of 0.40 meters at 16,500.
Based-upon the CCD Array configuration present in
the ADS digital sensor, imagery for each flight
line is 12,000-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 INYS,
PosPac and/or TerraPos 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 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, 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 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 aero triangulation
solution for each block using Pictovera 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 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 mosaicking steps.

The 12 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: 20151117

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Somerset County, ME

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: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 19

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -75.0

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: 1

Ordinate_Resolution: 1

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

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: NOAA Office for Coastal Management

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Avenue

City: Charleston

State_or_Province: SC

Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1202

Contact_Electronic_Mail_Address: coastal.info@noaa.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Erdas Imagine (.img) and TIFF / BigTIFF / GeoTIFF (.tif)

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://coast.noaa.gov/dataregistry/

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20171101

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA-FSA-APFO Aerial Photography Field Office

Contact_Address:

Address_Type: mailing and physical

Address: 2222 West 2300 South

City: Salt Lake City

State_or_Province: Utah

Postal_Code: 84119-2020

Country: USA

Contact_Voice_Telephone: 801-844-2922

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998