gov.noaa.nmfs.inport:48414 eng UTF8 dataset Office for Coastal Management resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2024-02-29T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 2013 Athens-Clarke County, Georgia Imagery AthensClarkeOrtho 2013-08-08 publication NOAA/NMFS/EDM 48414 https://www.fisheries.noaa.gov/inport/item/48414 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/digitalcoast WWW:LINK-1.0-http--link Citation URL Online Resource download imageDigital This data set consists of 0.5 foot pixel resolution, four band (RGB, Near IR) orthoimages covering Athens-Clarke Georgia. 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. The design accuracy is estimated not to exceed +/- 2.5 feet CE95 of the position on the ground. Each orthoimage provides imagery over a 5,000-foot by 5,000-foot block on the ground. There is no image overlap between adjacent files. The projected coordinate system is State Plane GA West (FIPS 1002) with a NAD83 Datum and units are a US Foot. The Athens-Clarke County's and Statewide Georgia tiling schemas was used. This data depicts geographic features on the surface of the earth. It was created to provide easily accessible geospatial data which is readily available to enhance the capability of Federal, State, and local emergency responders, as well as plan for homeland security efforts. This data also supports impervious surface mapping. Photo Science, Inc. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian unknown EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED IMAGERY EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE IMAGERY theme Global Change Master Directory (GCMD) Science Keywords 17.0 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GEORGIA place Global Change Master Directory (GCMD) Location Keywords 20.8 CAMERAS instrument Global Change Master Directory (GCMD) Instrument Keywords 17.2 Airplane > Airplane platform Global Change Master Directory (GCMD) Platform Keywords 17.2 0.5 foot orthoimage Remotely Sensed Imagery/Photos four-band orthophoto image map orthoimage orthophoto rectified image rectified photograph theme DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Imagery project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: 2013 Athens-Clarke County, Georgia Imagery [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48414. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of it's limitations. Acknowledgment of the NOAA-Office for Coastal Management would be appreciated for products derived from these data. otherRestrictions Distribution Liability: Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user's sole risk. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 48414 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48414.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference grid eng; US imageryBaseMapsEarthCover Intergraph's suite of digital mapping and orthorectification software; Microstation; ArcGIS -83.561777 -83.215989 33.831531 34.05248 | Currentness: Ground Condition 2013-01-27 false eng false NOAA - OCM Contract NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=2529 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing area, map projection, file format, etc. download https://coastalimagery.blob.core.windows.net/digitalcoast/AthensClarkeGA_2013_2529/index.html WWW:LINK-1.0-http--link Bulk Download Simple download of data files. download dataset Accuracy Radiometry is verified by visual inspection of the digital orthophoto. Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching. Horizontal Positional Accuracy Orthoimagery is designed to meet or exceed +/- 2.5 feet CE95. Completeness Report Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free. Photography was flown during leaf-off in deciduous vegetation regions. Voided areas have a radiometric value of either zero (black) or 128 (uniform gray). Conceptual Consistency All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Seamline mismatches are not corrected unless the overall displacement exceeds one meter. Digital aerial imagery was obtained using a large format Z/I Digital Mapping Camera system (DMC) equipped with Airborne GPS/IMU covering the area of interest. The imagery was acquired with a 4.7244" (120 m/m) focal length at an altitude above mean terrain of 4,800' to yield a raw pixel resolution of 0.48' suitable for photogrammetric mapping and orthophoto production. The imagery was collected during leaf off conditions in the winter of 2013 under conditions free from clouds and cloud shadows, smoke, fog, haze, light streaks, snow, ice on water bodies, foliage, flooding, and excessive soil moisture. The sun angle threshold was 30. The imagery consisted of panchromatic, blue, green, red and near infrared bands. The three color bands and near infrared bands have been pan sharpened and archived as frame imagery. 2012-01-01T00:00:00 Utilizing all four pan-sharpened bands [blue (B), green (G), red(R) and near infrared (IR)] digital orthorectification was performed using cubic convolution algorithm resulting in a spatial and radiometric transformation of the digital image from line/sample space into the Georgia West State Plane Coordinate System, NAD 83, US Survey Feet. The interior and exterior orientation parameters from the aerotriangulation process were used to project each pixel into the ground coordinate system, while the ortho grade DEM/DTM was used to correct for relief displacement. Radiometric correction software and techniques were used to create orthophoto files that minimize the appearance of image seams and without loss of feature signature. Orthophotos are checked for geometric accuracy, image quality and tonally balanced to produce a uniform contrast and tone across the entire project. The individual overlapping orthophoto frames were mosaicked together and the final tiles were extracted from the image set to adhere to the Athens-Clarke County 5,000' x 5,000' tiling scheme consisting of 207 individual ortho tiles in GeoTIFF format. The ortho photos are designed to meet a horizontal accuracy of 2.5 feet or less at 95% confidence level. 2012-01-01T00:00:00 Source Contribution: Rectification surface. | Type of Source Media: stable-base material 2013 LiDAR Surface 2013-01-01 publication 2013 Source Contribution: Ground Control Points provide a method for accuracy assessment. | Type of Source Media: stable-base material Ground Control Points 2013 Source Contribution: Unprocessed RAW Frames along with Airborne GPS and IMU data provide the base data for the orthophotography. | Source Geospatial Form: remote-sensing image | Type of Source Media: stable-base material RAW Data 2013-01-27 otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None