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OCM Partners, 2023: 2016 Coastal Texas NAIP Digital Ortho Photo Imagery,

Item Identification

Title: 2016 Coastal Texas NAIP Digital Ortho Photo Imagery
Status: Completed
Publication Date: 2016-11-16

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 two main products: 1

meter ground sample distance (GSD) ortho imagery

rectified to a horizontal accuracy within +/- 5 meters

of reference digital ortho quarter quads (DOQQ's) from

the National Digital Ortho Program (NDOP) or from the

National Agriculture Imagery Program (NAIP); 1 meter

or 60cm GSD ortho imagery rectified within +/- 6

meters to true ground. 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 covers

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 15:1 for the 1 meter

imagery and 60:1 for the 60cm imagery.


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 60cm 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.




Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
None Aerial Compliance
None Compliance
None Digital Ortho rectified Image
None farming
None Ortho Rectification
None Quarter Quadrangle

Spatial Keywords

Thesaurus Keyword
Geographic Names Information System TX
None Texas

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Irregular
Data Presentation Form: Image (digital)
Entity Attribute Overview:

32-bit pixels, 4 band color(RGBIR) values 0 - 255

Entity Attribute Detail Citation:


Distribution Liability:

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

Support Roles

Data Steward

CC ID: 820268
Date Effective From: 2019-02-11
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


CC ID: 820270
Date Effective From: 2019-02-11
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Metadata Contact

CC ID: 820271
Date Effective From: 2019-02-11
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Point of Contact

CC ID: 820269
Date Effective From: 2019-02-11
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 820266
W° Bound: -100.812
E° Bound: -93.614
N° Bound: 31.989
S° Bound: 25.707

Extent Group 1 / Time Frame 1

CC ID: 820265
Time Frame Type: Discrete
Start: 2016

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Grid Representation 1

CC ID: 820283
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: No

Axis Dimension 1

Dimension Type: Row
Size: 1

Axis Dimension 2

Dimension Type: Column
Size: 1

Access Information

Security Class: Unclassified
Data Access Constraints:

There are no limitations for access.

Data Use Constraints:

None. The USDA-FSA Aerial Photography Field office

asks to be credited in derived products.

Distribution Information

Distribution 1

CC ID: 820272
Download URL:

Downloadable Data

File Type (Deprecated): Erdas Imagine (.img) and TIFF / BigTIFF / GeoTIFF (.tif)
Distribution Format: IMG - ERDAS Imagine

Distribution 2

CC ID: 820273
Download URL:
File Name: Customized Download

Create custom data files by choosing area, map projection, file format, etc.

Distribution 3

CC ID: 820274
Download URL:
File Name: Bulk Download

Simple download of data files.



CC ID: 820275
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 820277
Activity Date/Time: 2017-11-02

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 820276
Activity Date/Time: 2017-11-14

Converted from Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 820278
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 820279
Activity Date/Time: 2018-03-13

Partial upload to move data access links to Distribution Info.

Technical Environment



Data Quality

Horizontal Positional Accuracy:

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.

Completeness Report:


Conceptual Consistency:

NAIP 3.75 minute tile file names are based

on the USGS quadrangle naming convention.




CC ID: 820286
Contact Name: USDA-FSA-APFO Aerial Photography Field Office
Publish Date: 2016-09-21
Extent Type: Discrete
Extent Start Date/Time: 2016-07-03
Source Contribution:

Digital Georectified Image. | Source Geospatial Form: remote-sensing image | Type of Source Media: UnKnown

Process Steps

Process Step 1

CC ID: 820287

Digital imagery was collected at a nominal GSD of 80cm

or 40cm using nine Cessna 441 aircraft flying at

an average flight height of 8400m AGL for 80cm acquistion

and 4400m AGL for 40cm acquisition. Aircraft flew with

Leica Geosystem's ADS100/SH100 digital sensors with

firmware 4.54 or ADS100/SH120 digital sensors with

firmware 4.54. Each sensor collected 12 image bands

Red,Green,Blue and Near-infrared at each of three

look angles; Backward 19 degrees, Forward 26 degrees

and Nadir for the SH100. Backward 10 degrees, Forward

14 degrees, and Nadir for the SH120. The Nadir Green

band was collected in high resolution mode effectively

doubling the resolution for that band. The ADS100

spectral ranges are; Red 619-651nm,Green 525-585nm, Blue

435-495nm and Near-infrared at 808-882nm. The CCD arrays

have a pixel size of 5.0 microns in a 20000x1 format at

nadir; a 18000x1 format at the backward look angle

and a 16000x1 format at the forward look angle.

The CCD's have a dynamic range of 72db and the A/D

converters have a resolution of 14bits. The ADS is

a push-broom sensor the ground footprint of the imagery

is approximately 8km wide at a nominal 40cm GSD and 16km

wide at a nominal 80cm GSD by the length flightline.

The maximum flightline length is limited to approximately

240km. The factory calibrations and IMU alignments for

each sensor (Serial Numbers: 10511,10512,10514,10522,

10527,10530,10531,10534,10540,10554,12502 ) were tested

and verified by in-situ test flights before the start

of the project. The Leica MissionPro Flight Planning

Software is used to develop the flight acquisition plans.

Flight acquisition sub blocks are designed first to

define the GNSS base station logistics, and to break

the project up into manageable acquisition units. The

flight acquisition sub blocks are designed based on

the specified acquisition season, native UTM zone of

the DOQQs, flight line length limitations (to ensure

sufficient performance of the IMU solution) as well

as air traffic restrictions in the area. Once the sub

blocks have been delineated they are brought into

MissionPro for flight line design. The design

parameters used in MissionPro will be 30% lateral

overlap and 40cm or 80cm resolution. The flight lines

have been designed with a north/south orientation.

Process Date/Time: 2016-11-16 00:00:00

Process Step 2

CC ID: 820336

The design takes into account the latitude of the

state, which affects line spacing due to convergence

as well as the terrain. SRTM elevation data is

used in the MissionPro design to ensure the 50cm

GSD is achieved over all types of terrain. The raw

data was downloaded from the sensors after each

flight using Leica XPro software. The imagery was

then georeferenced using the 200Hz GPS/INS data

creating an exterior orientation for each scan line

(x/y/z/o/p/k). Leica Xpro APM software was used to

automatically generate tiepoint measurements between

the foward, nadir and backward look angles for each line

and to tie all flight lines together. The resulting point

data and exterior orientation data were used to perform

a full bundle adjustment using ORIMA software. Blunders

were removed, and additional tie points measured in weak

areas to ensure a robust solution. Once the point data

was clean and point coverage was acceptable,

photo-identifiable GPS-surveyed ground control points

were introduced into the block adjustment. The bundle

adjustment process produces revised exterior orientation

data for the sensor with GPS/INS, datum, and sensor

calibration errors modeled and removed. Using the

revised exterior orientation from the bundle adjustment,

orthorectified image strips were created with Xpro

software and the June 2014 USGS 10m NED DEM. The Xpro

orthorectification software applies an atmospheric-BRDF

radiometric correction to the imagery. This correction

compensates for atmospheric absorption, solar

illumination angle and bi-directional reflectance. The

orthorectified strips were then overlaid with each other

and the ground control to check accuracy. Once the accuracy

of the orthorectified image strips were validated the

strips were then imported into Inpho's OrthoVista 7.0

package which was used for the final radiometric

balance, mosaic, and DOQQ sheet creation. The final

DOQQ sheets, with a 300m buffer and a ground pixel

resolution of 1m or 60cm were then combined and compressed

to create the county wide CCMs.

Process Date/Time: 2016-11-16 00:00:00

Catalog Details

Catalog Item ID: 55526
GUID: gov.noaa.nmfs.inport:55526
Metadata Record Created By: Erik Hund
Metadata Record Created: 2019-02-11 13:40+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+0000
Metadata Record Published: 2019-02-11
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-02-11
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-02-11