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Short Citation:
Office for Coastal Management, 2022: Coastal Bend Texas Benthic Habitat Mapping Reprocessed DOQQ Aerial Imagery, https://www.fisheries.noaa.gov/inport/item/48423.

Item Identification

Title: Coastal Bend Texas Benthic Habitat Mapping Reprocessed DOQQ Aerial Imagery
Short Name: TX_ads40
Status: Completed
Publication Date: 2007-12-19
Abstract:

In 2006 and 2007 the NOAA Office for Coastal Management purchased services to reprocess existing digital multi-spectral imagery (ADS-40) and create digital benthic habitat data from this imagery for selected Texas coastal bend bays. The Center worked cooperatively with the Texas Parks and Wildlife Department (TPWD) and the Texas A and M University Center for Coastal Studies to develop benthic habitat data, primarily Submerged Aquatic Vegetation (SAV) for several coastal bays. This data will support the state's recently adopted Seagrass Monitoring Program which calls for regional mapping of SAV for status and trends assessment. The Center, Texas A and M, and TPWD have coordinated on the requirements of this project.

Original contact information:

Contact Name: Harold Rempel

Contact Org: Fugro EarthData, Inc.

Title: Director of Program Management

Phone: 301-948-8550

Email: hrempel@earthdata.com

Purpose:

These data have been created as a result of the need for having geospatial data immediately available and easily accessible in order to enhance the capability of the NOAA Office for Coastal Management (OCM)

Notes:

11378

Supplemental Information:

The bounding coordinates provided within the Spatial Domain section represent a rectangle covering the total area in which the project is located. The actual project boundary located within this area is comprised of 6 areas along the coast of the state of Texas. The geographic Corpus Christi Bay - ~356 sq mi , Redfish Bay - ~62 sq mi, Aransas Bay - ~285 sq mi, and Copano Bay - ~158 sq mi, Upper Laguna Madre - ~313 sq mi, and Baffin Bay - ~232 sq mi. A total of 762 orthos (381 natural color and 381color infrared) were produced to cover this area. Aerial imagery was collected in panchromatic, Red, Green, Blue and Near Infrared which yielded a natural color and false color infrared version of the completed digital orthophotography.The ADS40 digital camera system used for this imagery incorporates the latest in sensor technology, optics, electronics, data transfer, and storage. The ADS40 imagery is generated from seven parallel sensor lines in the focal plane of a single lens system, three panchromatic (forward, nadir, backward), red, green, and blue lines placed next to each other, and one infrared. Each panchromatic channel consists of two lines, each with 12,000 pixels, staggered (shifted with respect to each other) by 0.5 pixels. The viewing angles and characteristics of the sensor are as follows - - Focal length 62.5mm - Pixel size 6.5mm - PAN 2 arrays 12,000 pixels each - R,G,B and NIR,R,G 12,000 pixels - Backward to nadir stereo angle -14.1 degrees - Near infrared to nadir stereo angle -2.05 degrees - Dynamic Range of CCD - 12-bits for all arrays. For this dataset, the natural color and color infrared orthoimages were reprocessed at 0.50-meter pixel resolution. Each digital orthorectified quarter quad provides imagery for a nominal 3.75 by 3.75 minute area corresponding to the USGS quarter quad boundaries. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED IMAGERY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE IMAGERY
UNCONTROLLED
Global Change Master Directory (GCMD) Instrument Keywords Earth Remote Sensing Instruments > Passive Remote Sensing > Photon/Optical Detectors > Cameras > CAMERAS
Global Change Master Directory (GCMD) Platform Keywords Aircraft > AIRCRAFT
ISO 19115 Topic Category imageryBaseMapsEarthCover
None ADS40
None Aerial Photography
None Color Infrared DOQQ
None Digital Orthophoto Quarter Quad (DOQQ)
None Digital Orthophotography
None Natural Color DOQQ
None Remotely Sensed Imagery/Photos
None Texas Seagrass Monitoring Program

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > TEXAS
UNCONTROLLED
Geographic Names Information System Texas
Geographic Names Information System TX
Geographic Names Information System US

Physical Location

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

Data Set Information

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

Digital Imagery

Entity Attribute Detail Citation:

Not applicable

Distribution Liability:

Users must assume responsibility to determine the usability of these data.

Data Set Credit: NOAA Office for Coastal Management

Support Roles

Data Steward

CC ID: 634325
Date Effective From: 2007-12-19
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 634327
Date Effective From: 2007-12-19
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 634328
Date Effective From: 2007-12-19
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 634326
Date Effective From: 2007-12-19
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 634331
W° Bound: -97.743558
E° Bound: -96.710731
N° Bound: 28.25679
S° Bound: 26.93903

Extent Group 1 / Time Frame 1

CC ID: 634330
Time Frame Type: Discrete
Start: 2007-08-23

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

None

URLs

URL 1

CC ID: 745523
URL: https://coast.noaa.gov/digitalcoast
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 634350
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 634349
Activity Date/Time: 2017-11-14
Description:

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

Activity Log 3

CC ID: 717529
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 745522
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Windows NT/2000 Systems, GPro/LPS, Leica ORIMA

Data Quality

Accuracy:

Horizontal accuracy of the reprocessed source imagery was verified to be better than 5 meters at 90% confidence level in accordance with National Map Accuracy Standards for a 1-meter GSD.

Horizontal Positional Accuracy:

Accuracy assessment determined by evaluating the horizontal accuracy obtained during the aerotriangulation process for each lift for the reprocessed imagery.

Vertical Positional Accuracy:

None

Completeness Report:

Compliance with the accuracy standard for the reprocessed imagery was ensured by the placement of photo identifiable ground control points and the collection of airborne GPS data.

Conceptual Consistency:

For the reprocessed imagery, compliance with the accuracy standard was ensured by the placement of photo identifiable ground control points. A total of 18 photo identifiable ground survey points was used for the calculations. An RMS value was calculated based on the imagery reprocessed for this project by comparing the aerotriangulated X and Y coordinates. This value represents an estimate of the accuracy of the horizontal coordinate measurements in the tile expressed in meters.

Lineage

Sources

REPORT OF GPS SURVEY TEXAS COASTAL AREA MAPPING

CC ID: 634320
Contact Name: Terrasurv Inc.
Publish Date: 2005-11-09
Extent Type: Range
Extent Start Date/Time: 2005-10-17
Extent End Date/Time: 2005-10-19
Scale Denominator: 1000
Source Contribution:

TerraSurv, Inc. of Pittsburgh, PA was contracted by EarthData International of Frederick, MD to perform a geodetic control survey in support of mapping an area along the southeasterly coast of Texas between Port Lavaca and Brownsville. Thirty-eight photo identifiable locations were surveyed to provide ground control and quality assurance checks for the mapping. Twenty of the stations were used for mapping control and eighteen of the stations were used for quality checks. The horizontal datum was the North American Datum of 1983, CORS adjustment (NAD 1983 CORS). The vertical datum was the North American Vertical Datum of 1988 (NAVD 1988). | Source Geospatial Form: model | Type of Source Media: paper

Process Steps

Process Step 1

CC ID: 634321
Description:

The digital orthophotography was developed from imagery acquired at a resolution of 0.9 meters as part of the 2004 overflight of the State of Texas developed for the USDA National Agricultural Imagery Program (NAIP). In order to achieve a horizontal accuracy of 5 meters, CE90 it was necessary to reprocess the imagery incorporating new GPS field control. It should be noted that the imagery was not tide coordinated so tidal variation may exist between sorties. The imagery was acquired between November 3, 2004 and November 7, 2004. Imagery was flown with Leica ADS40 digital sensors to capture 0.9m raw data. Raw data was then downloaded using Leica GPro software into 12 bit TIFF format. The raw TIFF imagery was then georeferenced and reprojected using GPS/INS 200Hz exterior orientation information (x/y/z/o/p/k) to allow stereo viewable imagery. This stereo viewable imagery was processed with the GPro/LPS automatic point matching algorithm to determine common match points every 2000 pixels across the imagery strip and 333 pixels along strip. This pattern included dual rows of line ties to the adjacent line of imagery. The resulting point data was imported into Leica ORIMA and used to perform a full bundle adjustment of the imagery point data. Any blunders were removed, and weak areas were manually supplemented to ensure good coverage of points. TerraSurv, Inc. of Pittsburgh, PA was contracted by EarthData International of Frederick, MD to perform a geodetic control survey in support of mapping an area along the southeasterly coast of Texas between Port Lavaca and Brownsville. Thirty-eight photo identifiable locations were surveyed to provide ground control and quality assurance checks for the mapping. Twenty of the stations were used for mapping control and eighteen of the stations were used for quality checks. The horizontal datum was the North American Datum of 1983, CORS adjustment (NAD 1983 CORS). The vertical datum was the North American Vertical Datum of 1988 (NAVD 1988). These control points were incorporated into the ORIMA bundle adjustment to ensure absolute accuracy requirements were met. The 18 quality check points coordinates were solved for in the bundle adjustment and compared to the surveyed results. The output from this bundle adjustment process was revised exterior orientation data for the sensor with any GPS/INS, datum, and sensor calibration errors modeled and compensated for. Using this revised EO data orthorectified image strips were created using the USGS NED DEM. The 10m NED DEM was used where available and 30m DEM was used elsewhere. The orthorectified image strips were processed with a internally developed routine that compensates for the bi-directional reflectance function that is caused by the sun's position relative to the image area. This compensated imagery was then imported into Inpho's OrthoVista 4.0 package which was used for the final radiometric balance, mosaic, and DOQQ sheet creation. These final DOQQ sheets contained a 300m minimum buffer. The sheets for the project area were then resampled to 2m and mosaicked. For habitat classification, the mosaicked imagery was divided into six processing one set of six mosaics for true color and one set of six mosaics for color-IR. Image segmentation was performed using on the blue, green, red, and near-infrared bands for each of the six processing areas.

Process Date/Time: 2007-08-09 00:00:00
Source: REPORT OF GPS SURVEY TEXAS COASTAL AREA MAPPING

Catalog Details

Catalog Item ID: 48423
GUID: gov.noaa.nmfs.inport:48423
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 14:46+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-03-13
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-03-13
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-03-13