Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA),
National Ocean Service (NOS), Coastal Services Center (CSC)
20080118
San Antonio-Espiritu Santo Bay, Texas
Four band, 1meter resolution, UltraCam orthoimage,
Mosquito_Point-NW.tif
raster digital data
Charleston, SC
NOAAs Ocean Service, Coastal Services Center (CSC)
http://www.csc.noaa.gov
The NOAA Coastal Services Center purchased digital Vexcel Ultracam
imagery and digital elevation models of the Texas coastline at Espiritu-Santo Bay
in 2007. The Coastal Texas project area is comprised of
approximately 458 square miles. A total of 219 multispectral orthos
were created 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. Imagery was collected at an approximate
altitude of 21000 feet above ground level.
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
Coastal Services Center (CSC) and the USGS.
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 areas delimited by areas along
the coast of the state of Texas. The Coastal Texas project area is comprised of
approximately 458 square miles. A total of 219 multispectral orthos
were created 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. Imagery was collected at an approximate
altitude of 21000 feet above ground level.
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.
20071205
ground condition
As needed
-96.752380
-96.685092
28.376990
28.310522
None
Remotely Sensed Imagery/Photos
Orthos
Orthoimage
Digital Orthophotography
Aerial Photography
Vexcel Ultracam D
Digital Orthophoto Quarter Quad (QDQQ)
Digital Orthophoto Quarter Quarter Quad (QDQQQ)
Natural Color DOQQ
Color Infrared DOQQ
Geographic Names Information System
Texas
TX
US
Gulf of Mexico
San AntonioEspiritu - Santo Bay
NONE
This data set is not for use in litigation. While efforts have been made to ensure that these data are accurate
and reliable within the state of the art, NOAA cannot assume liability for any damages, or misrepresentations
caused by any inaccuracies in the data, or as a result of data to be used on a particular system. NOAA makes
no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. We request that
you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these photos in a report,
publication, or presentation.
Sanborn Map Company, Inc.
David Brostuen
Senior Program Manager
mailing and physical address
1935 Jamboree Drive Suite 100
Colorado Springs
CO
80922
USA
719-593-0093
719-528-5093
dbrostuen@sanborn.com
9:00am - 5:00pm
NOAA Coastal Services Center
No attributes present
Compliance with the accuracy standard was ensured by the placement
of photo identifiable ground control points and the collection of
airborne GPS data. An RMS value was calculated based on the imagery
utilized in the production of the tile by comparing the
photoidentifiable points to the airborn GPS/IMU solution. This value
represents an estimate of the accuracy of the horizontal coordinate
measurements in the tile expressed in meters.
Compliance with the accuracy standard was ensured by the placement
of photo identifiable ground control points and the collection of
airborne GPS data.
Accuracy assessment determined by evaluating the
horizontal accuracy of the ortho imagery as compared to
photo-identifiable ground control points.
0.94 Meters
The horizontal accuracy was determined by calculating a Root Mean Squared Error (RMSE)
for a number of surveyed checkpoint sites. The surveyed points were visually compared
to the target site within the orthoimagery and horizontal offsets recorded. These recorded
offsets were used to calculate an overall RMSE for the product. The formula used to
calculate the RMSE values was: Accuracy(r) = 1.7308* RMSE(r). The resultant RMSE of the
ortho was calculated to be 0.94 meters (NSSDA 95% CE). The orthoimagery exceeds the project
specification of +/- 5 Meters CE95.
For the orthophoto product, there is no vertical accuracy.
Sanborn Map Company
20080118
Photo Identifiable Point Survey
model
21000
digital tape media
20071205
ground condition
Photo Identifiable Point Survey
Sanborn established six (6) survey points to support the
photo ID points used for horizontal checking.
Orthoimages were created by Sanborn Map Company, Inc. using the proprietary Metro processes. Images
were processed and mosaicked using image processing tools developed by Sanborn. The control source
used for this project was AGPS/IMU collected at the time of flight. The ortho generation process
begins by rectifying the image. The ortho technician reads the orientation input information
from the georeferences photo file and rectifies the image. The ortho-rectification process performed
for this project used nearest neighbor sampling techniques. Proper orientation of the image is
then checked and rectification is repeated if necessary. Per project specifications, the ortho
technician uses proprietary software to develop auto-seam color balancing parameters. The ortho
technician then mosaics multiple images into a project-wide image database at which time seaming and
color balancing parameters are applied. The image database is then checked to ensure that the all
data is present and accurate. The ortho technician will then extract orthos from the image database
using the project tiling scheme provided by NOAA. A quality assurance process is then undertaken to
ensure all orthos meet project requirements.
Imagery
20080110
Raster
Pixel
6071
6820
1
Universal Transverse Mercator
14
0.999600
-99.000000
0.000000
500000.000000
0.000000
row and column
1.000000
1.000000
meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257222101
Vexcel Ultracam-D
1 Meter pixel resolution
Color and color IR
Not Applicable
Clearinghouse Manager
mailing and physical address
2234 South Hobson Avenue
Charleston
SC
29405-2413
USA
(843)740-1210
(843)740-1224
clearinghouse@csc.noaa.gov
Monday-Friday, 8-5 EST
Clearinghouse ManagerNOAA Coastal Services Center
Downloadable Data
Users must assume responsibility to determine the usability of these data.
20080118
20080118
NOAA Coastal Services Center
Metadata Specialist
Metadata Specialist
Mailing and physical address
2234 S Hobson Ave.
Charleston
SC
29405
USA
843-740-1210
843-740-1224
csc@csc.noaa.gov
8:00 am to 5:00 pm EST.
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time