Ortho Photomosaic FAQ Metadata
Frequently-anticipated questions:
- Title: Grand Teton National Park Vegetation Mapping Project - True Color Orthophotography
- Abstract:
-
Color aerial photography was collected, in stereo with 60 percent forward
overlap and 40 percent side overlap, between 7-10-02 and 7-11-02. The
flight height was 20,000' above mean terrain. Airborne GPS was
collected with a base station at the Driggs, ID Airport (Latitude: 43 44
16.43276; Longitude:-111 06 20.33612; Height:1854.030 m; Antenna ht:2.055
m). Two sets of color contact prints were made, and the film scanned at 21
microns for a 1 meter pixel resolution. The scanned photography was
bridged at Horizons Inc. Rapid City, SD. Final adjustment of the
photography was solved using Erio Technologies ALBANY software. USGS
National Elevation Dataset (NED) was used as DEM to create digital
orthophotography. Digital and hard copy plots of the project area were
delivered.
The Orthophotography from Horizon's was compressed into a mosaic using
MrSid software by the U.S. Bureau of Reclamation's Remote Sensing and GIS
Group. A compression ration of 20x was used to create this image.
The reprojection of the mosaic from UTM NAD27 Zone 12 Meters to UTM NAD83
Zone 12 Meters was preformed in ERDAS Imagine Software using a NADCON
conversion.
- Supplemental_Information: None
- How should this data set be cited?
Horizons, Inc., 20021023, Grand Teton National Park - 2002 True Color Orthophotography: None None, Grand Teton National Park, Moose, WY.
Online Links:
- Other_Citation_Details: None
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -110.9013
- East_Bounding_Coordinate: -110.8212
- North_Bounding_Coordinate: 44.1525
- South_Bounding_Coordinate: 44.0912
- Description_of_Geographic_Extent: Grand Teton National Park and environs
- What does it look like?
- <http://biology.usgs.gov/npsveg/grte/images/grteortho.pdf> (PDF)
-
Orthophoto; low resolution for web browsing.
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 10-Jul-2002
- Ending_Date: 10-Jul-2002
- Currentness_Reference: publication date
- What is the general form of this data set?
- Geospatial_Data_Presentation_Form: remote-sensing image
- How does the data set represent geographic features?
- How are geographic features stored in the data set?
This is a Raster data set.
It contains the following raster data types:
- Dimensions 81600 x 64001 x 1, type Pixel
- What coordinate system is used to represent geographic features?
- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
-
- UTM_Zone_Number: 12
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -111
- Latitude_of_Projection_Origin: 0
- False_Easting: 500000
- False_Northing: 0
Planar coordinates are encoded using row and column
Abscissae (x-coordinates) are specified to the nearest 1.000000
Ordinates (y-coordinates) are specified to the nearest 1.000000
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257.
- How does the data set describe geographic features?
- Band_1
- Raster
(Source: ESRI)
- ObjectID
- Internal feature number.
(Source: ESRI)
Sequential unique whole numbers that are automatically generated.
- Value
- Internal feature number.
(Source: ESRI)
None.
- Count
- Internal feature number.
(Source: ESRI)
None.
- Band_2
- Raster
(Source: ESRI)
- ObjectID
- Internal feature number.
(Source: ESRI)
Sequential unique whole numbers that are automatically generated.
- Value
- Internal feature number.
(Source: ESRI)
None.
- Count
- Internal feature number.
(Source: ESRI)
None.
- Band_3
- Raster
(Source: ESRI)
- ObjectID
- Internal feature number.
(Source: ESRI)
Sequential unique whole numbers that are automatically generated.
- Value
- Internal feature number.
(Source: ESRI)
None.
- Count
- Internal feature number.
(Source: ESRI)
None.
- Entity_and_Attribute_Overview:
-
ZEISS RMK Top 15 FMC Calibrated focal length: 152.773 mm, Orthophoto Pixel
Size = 1.0 meters, Orthophoto corner coordinates: 1 507900.00 4888600.00 2
514300.00 4888600.00 3 507900.00 4881800.00 4 514300.00 4881800.00
- Entity_and_Attribute_Detail_Citation: None
- Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Who also contributed to the data set?
- To whom should users address questions about the data?
Bureau of Reclamation (BOR)
c/o Alan Bell
GIS Coordinator
Denver Federal Center Building 56 Rm 2665
Denver, Colorado 80225-0007
United States
303-445-2268 (voice)
Unknown (FAX)
Alan Bell
- Hours_of_Service: 8am-5pm, Mountain Time
The aerial photography will be used for detailed vegetation mapping.
Additional stereo color photography at 1:12000 was also taking during this
project.
- From what previous works were the data drawn?
- None (source 1 of 1)
-
Horizons, Inc., 20020710, Grand Teton National Park Orthophotos.
- Type_of_Source_Media: Kodak 2444 Film
- Source_Scale_Denominator: 40000
- Source_Contribution: None
- How were the data generated, processed, and modified?
- Date: 23-Oct-2002 (process 1 of 2)
-
Scanner: Intergraph PhotoScan TD Photo Digitizing System. Scanner
Geometric Calibration: Standard Deviation (sigma) = 1.6710356970 Root
Mean Square X = 1.9970393211 Root Mean Square Y = 0.9624905604 Scanner
setting: Transmissivity: 0.0151 0.6610 Film Density: 1.8210 0.1778
Gamma: 1.75 Quality Control Procedures: Film was kept in airtight
containers prior to scanning. Both the base and emulsion sides of the
film were cleaned using a tacky roller system prior to scanning. Color
adjustment was achieved by visually matching the tone, contrast, and
brightness to the original film. Each scanned image was checked
computationally for missing data. Quality Control Procedures for
orthophoto production: After individual orthophotos were mosaiced into a
regional database, the resulting orthophoto composite was visually
inspected for tone balance and image distortion. In areas of image
distortion, more suitable orthophoto imagery was inserted, when
possible. Digitized shoreline and breakline vectors were superimposed on
the orthphoto mosaic and visually inspected for accuracy and
consistency.
Person who carried out this activity:
Ted Heidrich
Horizons Inc.
GIS Coordinator Horizons Job #01-5384
3600 Jet Drive
Rapid City, South Dakota 57703
United States
605-343-0280 (voice)
605-343-0305 (FAX)
Ted Heidrich
- Hours_of_Service: 8am-5pm Mountain Time
Data sources used in this process:
- Date: Unknown (process 2 of 2)
-
Metadata imported.
Data sources used in this process:
- C:\DOCUME~1\DANCOG~1\LOCALS~1\Temp\xml79.tmp
- What similar or related data should the user be aware of?
- How well have the observations been checked?
Orthophotos were created from the aerial photography using USGS Class 2
DEM data and photo triangulation data. No IMU data were collected for this
aerial photography. The X, Y, Z, omega, phi, and kappa for each photograph
were calculated by Horizons Inc. The Z-Bias was solved using Quad vertical
points. Airborne GPS was collected during the photography missionfor each
exposure station. The GPS event is at the photo-center of each exposure.
The final adjustment of this block was solved using Erio Technologies
ALBANY software. ALBANY is a simultaneous least squares bundle adjustment,
which is designed for use with airborne GPS.
- How accurate are the geographic locations?
The horizontal RMS for the airborne GPS for this area of the project is:
X - RMS = .169 meters Y - RMS = .165 meters The X-Y vector is .236
meters. Some Airborne GPS photo-center x and y residuals are as high as
.275 meters.
- How accurate are the heights or depths?
The vertical RMS for the airborne GPS for this area of the project is: Z
- RMS = .227 meters. Some Airborne GPS photo-center z residuals are as
high as .713 meters.
- Where are the gaps in the data? What is missing?
Complete
- How consistent are the relationships among the observations, including topology?
None
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: None
- Who distributes the data set? (Distributor 1 of 1)
USGS/CSS/Core Science Analytics and Synthesis
c/o USGS-NPS Vegetation Mapping Program Coordinator
Denver Federal Center, Building 810, Room 8000, MS 302
Denver, Colorado 80225
(303) 202-4220 (voice)
303-202-4219 (FAX)
gs-b-npsveg@usgs.gov
- What's the catalog number I need to order this data set?
Downloadable Data
- What legal disclaimers am I supposed to read?
The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such.
The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data.
The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service.
- How can I download or order the data?
- Availability in digital form:
- Cost to order the data: None
- Availability in digital form:
| Data format: |
True Color
in format Compressed County Mosaic
Size: 355.262
|
|---|
| Network links: |
None
|
|---|
| Media you can order: |
CD-ROM
(format Unknown)
|
|---|
- Cost to order the data: Contact the Aerial Photography Field Office for more information
- Dates:
- Last modified: 28-Dec-2005
Last Reviewed: 27-May-2010
- Metadata author:
-
USGS/CSS/Core Science Analytics and Synthesis
c/o USGS-NPS Vegetation Mapping Program Coordinator
Denver Federal Center, Building 810, Room 8000, MS 302
Denver, Colorado 80225
(303) 202-4220 (voice)
303-202-4219 (FAX)
gs-b-npsveg@usgs.gov
- Metadata standard:
- FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (FGDC-STD-001.1-1999)
- Metadata extensions used:
-
Generated by mp version 2.9.12 on Thu May 27 08:41:59 2010
Return to USGS Vegetation Characterization Program at Grand Teton National Park
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U.S. Department of the Interior |
U.S. Geological Survey
