2007 Palm Beach County Orthorectified photos of the County's estuarine waters including the Lake Worth Lagoon. Used for mapping essential fish habitat (NODC Accession 0061752)

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Frequently anticipated questions:


What does this data set describe?

Title:
2007 Palm Beach County Orthorectified photos of the County's estuarine waters including the Lake Worth Lagoon. Used for mapping essential fish habitat (NODC Accession 0061752)
Abstract:
2007 Palm Beach County Mapping Digital Orthorectified photos and Mosaics of 1:10000 scale natural color aerial photography were created. Imagery was flown on June 20 & 22, July 21, and August 4 & 8, 2007. Additionally, there was 1:4800 scale natural color aerial photography flown on July 1, 2007. The imagery that was flown on June 20 & 22, July 21, and August 4, 2007 included the ICW and Lake Worth Lagoon system throughout Palm Beach County south of Jupiter Inlet. The imagery that was flown on August 8, 2007 was for the area around Jupiter Inlet and southern Jupiter Sound. The 1:4800 scale imagery flown July 1, 2007 covered the mouth of the Loxahatchee River and west around the start of the Lake Worth Creek. Photograpy for the project was orthorectified on Avineon's ImageStation Stereo software; an aerotriangulation solution was computed across the project area, using ImageStation Automatic Triangulation (ISAT) software issued by Z/I Imaging, Inc. Utilizing GPS coordinates of the center of photography, camera calibration reports and the raw scans of photography, ISAT created a solution that meets the National Map Accuracy Standards for 1:24,000 scale maps. The GPS photo centerpoint data and existing ground control was utilized as the control for creation of the aerotriangulation solution. Upon completion of the aerotriangulation solution, checkpoints were derived from USGS DOQQs to check the spatial accuracy of the triangulation solution.

Upon completion and quality assurance acceptance of the aerotriangulation solution, the adjusted control points and camera orientation parameters were used to set up the stereo models for photointerpretation within soft copy photogrammetric workstations.

Raw images were color balanced using I/RASC and a new look-up table was applied to images before saving to a new file. This balance process was completed to correct a green saturation that occured during the scanning process.

The orthophotography process was performed using an automated batch process. By using the raw imagery in combination with the aerotriangulation results described above, our softcopy system generated a digital ortho to a specified pixel size. Two copies of orthos were produced, pixel resolution was set at 1/2 foot and two feet.

  1. How should this data set be cited?

    Avineon, Inc., and NOAA/NMFS/Southeast Regional Office - PI Jocelyn Karazsia, Unpublished Material, 2007 Palm Beach County Orthorectified photos of the County's estuarine waters including the Lake Worth Lagoon. Used for mapping essential fish habitat (NODC Accession 0061752): Avineon, Inc., Clearwater, FL.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -80.219680
    East_Bounding_Coordinate: -80.191116
    North_Bounding_Coordinate: 27.283799
    South_Bounding_Coordinate: 27.258283

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 20-Jun-2007
    Time_of_Day: unknown
    Currentness_Reference: Source photography date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: remote-sensing image

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Raster data set. It contains the following raster data types:

      • Dimensions 19399 x 19387 x 1, type Pixel

    2. What coordinate system is used to represent geographic features?

      The map projection used is Transverse Mercator.

      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.999941
      Longitude_of_Central_Meridian: -81.000000
      Latitude_of_Projection_Origin: 24.333333
      False_Easting: 656166.666667
      False_Northing: 0.000000

      Planar coordinates are encoded using Row and Column
      Abscissae (x-coordinates) are specified to the nearest 0.499999
      Ordinates (y-coordinates) are specified to the nearest 0.499999
      Planar coordinates are specified in survey feet

      The horizontal datum used is D_North_American_1983_HARN.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Avineon Inc. Orthorectification Staff- Daniel Bubser, Joseph Muller, Scott Goodwyn Palm Beach County- Eric Anderson

  3. To whom should users address questions about the data?

    Keith Patterson
    Avineon, Inc.
    Director- Photogrammetry, Mapping, GIS
    15500 Lightwave Drive, Suite 200
    Clearwater, FL 33760
    United States of America

    (727)539-1661 (voice)
    (727)539-6954 (FAX)
    kpatterson@avineon.com

    Hours_of_Service: 9:00AM to 5:00PM


Why was the data set created?

A major objective of the Lake Worth Lagoon Management Plan is to restore, preserve and create seagrass beds, oyster bars and other submerged benthic habitat. Aerial surveys will enable Palm Beach County Department of Environmental Resources Management to determine the aerial extent of seagrass beds, mangrove habitat, oyster reefs, and spartina within the Lake Worth Lagoon and Intracoastal Waterway, while the fixed transect survey will reveal whether selected seagrass beds are stable, expanding or receding.


How was the data set created?

  1. From what previous works were the data drawn?

    (none) (source 1 of 3)
    Imaging, US, Unknown, Lake Worth Lagoon.

    Type_of_Source_Media: True color aerial photography, stereo coverage
    Source_Scale_Denominator: 10000
    Source_Contribution:
    Photographic signature for interpretation of seagrass data

    (none) (source 2 of 3)
    Imaging, US, Unknown, Loxahatchee River.

    Type_of_Source_Media: True color aerial photography, stereo coverage
    Source_Scale_Denominator: 4800
    Source_Contribution:
    Photographic signature for interpretation of seagrass data

    (none) (source 3 of 3)
    Imaging, US, Unknown, Indian River Lagoon.

    Type_of_Source_Media: True color aerial photography, stereo coverage
    Source_Scale_Denominator: 10000
    Source_Contribution:
    Photographic signature for interpretation of seagrass data

  2. How were the data generated, processed, and modified?

    Date: Unknown (process 1 of 2)
    Ground control points were imported from previous mapping projects. The ground control points provided the latitude and longitude coordinates for each point. These items were referenced to identify and transfer the points to the aerial photo layout. The pixel coordinate values, which are embedded within the digital orthophotographic imagery, were collected for photoidentifiable features on the DOQQ image. The imagery was then Aerial Triangulated using ImageStation software utilizing the ground control points and DEMs. Once the solution was complete the photograpy was orthorectified in ImageStation OrthoPro software. This software also utilized the ground control and DEMs. Cloud Cover: minimal

    Date: Unknown (process 2 of 2)
    Metadata imported.

    Data sources used in this process:

    • C:\DOCUME~1\jmuller\LOCALS~1\Temp\xml2F4.tmp

  3. What similar or related data should the user be aware of?

    Unknown, Unknown, 2007 Lake Worth Lagoon Mapping Project.


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    Existing ground controlpoints were used from previous mapping efforts. These points included both GPS survey points and control points collected from USGS 1m DOQQ's. Horizontal positional accuracy of the data meets NMAS for 1:24000 scale maps, approximately +/- 40 feet. The digital photography was reviewed over USGS DOQQ's. GPS points were also collected during field work at well defined features and compared against coordinates for the same features on the photography.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Not reported

  5. How consistent are the relationships among the observations, including topology?

    Upon receipt of the aerial photography, Avineon inspected it for tonal balance and contrast, completeness, signature appearance and scale prior to acceptance.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Acknowledgement of Avineon Inc. would be appreciated in products derived from this data. The positional accuracy of this data meets USGS NMAS for 1:24000 scale maps (+/- 40 feet).

  1. Who distributes the data set? (Distributor 1 of 1)

    Palm Beach County- Department of Environmental Resources Management
    2300 North Jog Road, 4th Floor
    West Palm Beach, FL 33411-2743
    United States

    (561) 233-2514 (voice)
    Eanderson1@co.palm-beach.fl.us

    Contact_Instructions: (contact via e-mail)
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    This data is provided "as is" without warranty or any representation of accuracy, timeliness or completeness. The burden for determining accuracy, completeness, timeliness, merchantability and fitness for or the appropriateness for use rests solely on the requester. The County makes no warranties, express or implied, as to the use of the data. There are no implied warranties of merchantability or fitness for a particular purpose. The requester acknowledges and accepts the limitations of the data, including the fact that the data is dynamic and is in a constant state of maintenance, correction and update.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 05-Sep-2014
Last Reviewed: 24-Apr-2009
Metadata author:
Avineon Inc.
Attn: Keith Patterson
Director- Photogrammetry, Mapping, GIS
15500 Lightwave Drive, Suite 200
Clearwater, FL 33760
USA

727-539-1661 (voice)
727-539-6954 (FAX)
kpatterson@avineon.com

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.13 on Sat Sep 20 10:41:51 2014