2014 Schley County, GA DMC 4-Band 8 Bit Imagery
Data Set (DS) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:48406 | Updated: February 5, 2024 | Published / External
Summary
Short Citation
Office for Coastal Management, 2024: 2014 Schley County, GA DMC 4-Band 8 Bit Imagery, https://www.fisheries.noaa.gov/inport/item/48406.
Full Citation Examples
This data set consists of six-inch pixel resolution, natural color orthoimages covering the urban area footprint. 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. Each orthoimage provides imagery over a 5000-foot by 5000-foot block on the ground. There is no image overlap between adjacent files. The projected coordinate system is Georgia State Plane West (FIPS 1002) feet with a NAD83 datum.
Distribution Information
-
IMG - ERDAS Imagine
Downloadable Data
-
Create custom data files by choosing area, map projection, file format, etc.
-
Simple download of data files.
None
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be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions.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.
Controlled Theme Keywords
imageryBaseMapsEarthCover, INFRARED IMAGERY, VISIBLE IMAGERY
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-84.454° W,
-84.163° E,
32.44° N,
32.138° S
2014-01-22 - 2014-02-28
Item Identification
Title: | 2014 Schley County, GA DMC 4-Band 8 Bit Imagery |
---|---|
Short Name: | 2014_schley_ga |
Status: | Completed |
Publication Date: | 2014-12-16 |
Abstract: |
This data set consists of six-inch pixel resolution, natural color orthoimages covering the urban area footprint. 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. Each orthoimage provides imagery over a 5000-foot by 5000-foot block on the ground. There is no image overlap between adjacent files. The projected coordinate system is Georgia State Plane West (FIPS 1002) feet with a NAD83 datum. |
Purpose: |
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 storm water management and assessment. |
Notes: |
11361 |
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
|
ISO 19115 Topic Category |
imageryBaseMapsEarthCover
|
UNCONTROLLED | |
None | 6 inch orthoimage |
None | image map |
None | natural color orthophoto |
None | orthoimage |
None | orthophoto |
None | rectified image |
None | rectified photograph |
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GEORGIA
|
UNCONTROLLED | |
U.S. Department of Commerce | GA |
U.S. Department of Commerce | US |
Instrument Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Instrument Keywords |
CAMERAS
|
Platform Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Physical Location
Organization: | Office for Coastal Management |
---|---|
City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
---|---|
Maintenance Frequency: | Unknown |
Data Presentation Form: | Image (digital) |
Entity Attribute Overview: |
Natural color orthoimagery is organized in three color bands or channels which represent the red, green, and blue (RGB) portions of the spectrum. Each image pixel is assigned a triplet of numeric values, one for each color band. Numeric values range from 0 to 255. Areas where data is incomplete due to lack of full coverage (all outside of the AOI) are represented with the numeric value of 0. |
Entity Attribute Detail Citation: |
U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA. |
Distribution Liability: |
Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS. |
Data Set Credit: | Photo Science, Inc. A Quantum Spatial Company flew and processed the data. |
Support Roles
Data Steward
Date Effective From: | 2014-12-16 |
---|---|
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
Date Effective From: | 2014-12-16 |
---|---|
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
Date Effective From: | 2014-12-16 |
---|---|
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
Date Effective From: | 2014-12-16 |
---|---|
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: | Ground Condition |
---|
Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -84.454 | |
---|---|---|
E° Bound: | -84.163 | |
N° Bound: | 32.44 | |
S° Bound: | 32.138 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2014-01-22 |
End: | 2014-02-28 |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
---|
Access Information
Security Class: | Unclassified |
---|---|
Data Access Constraints: |
None |
Data 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. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataregistry/ |
---|---|
Distributor: | |
Description: |
Downloadable Data |
File Type (Deprecated): | Erdas Imagine (.img) and TIFF / BigTIFF / GeoTIFF (.tif) |
Distribution Format: | IMG - ERDAS Imagine |
Distribution 2
Download URL: | https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=4737 |
---|---|
Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing area, map projection, file format, etc. |
Distribution 3
Download URL: | https://coastalimagery.blob.core.windows.net/digitalcoast/SchleyGA_2014_4737/index.html |
---|---|
Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataregistry |
---|---|
URL Type: |
Online Resource
|
Activity Log
Activity Log 1
Activity Date/Time: | 2017-02-22 |
---|---|
Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
---|---|
Description: |
Converted from FGDC CSDGM (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Log 3
Activity Date/Time: | 2018-02-08 |
---|---|
Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
---|---|
Description: |
Partial upload to move data access links to Distribution Info. |
Technical Environment
Description: |
ArcGIS 10; Microsoft Windows 7; Microsoft Office; Intergraph's suite of photogrammetric products including Z/I Inflight and GeoMedia OrthoPro |
---|
Data Quality
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: |
Ground Control Points will be measured in Accuracy Analyst in order to produce an accuracy report for each area. |
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. Coastal areas and international boundary regions may have areas without images (void areas) in parts of the coverage. These void 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. |
Lineage
Sources
Aerotriangulation
Extent Type: | Discrete |
---|---|
Extent Start Date/Time: | 2014 |
Source Contribution: |
Softcopy aerotriangulation was performed utilizing the airborne GPS/IMU data, GPS ground control and image coordinate measurements allowing the direct computation of the exterior orientation parameters for each image of the project. | Source Geospatial Form: model | Type of Source Media: CD-ROM |
Georeferenced Single Frames
Publish Date: | 2014-12-16 |
---|---|
Extent Type: | Discrete |
Extent Start Date/Time: | 2014-01-22 |
Source Contribution: |
Aerial imagery was acquired using a Zeiss/Intergraph Digital Frame camera (DMCii) with a flight design that included a total of 2446 exposures in 278 flight lines. Aerial imagery was supplemented with the simultaneous acquisition of airborne GPS/IMU data, which captured the ground coordinate for the nadir point of each photograph. Aerial imagery was exposed at an altitude of 10,000' above mean terrain for six inch imagery and 20,000' above mean terrain for one foot imagery. | Source Geospatial Form: remote-sensing image | Type of Source Media: external hard drive |
GPS Photo Control Survey for Coastal Georgia
Publish Date: | 2014-01-01 |
---|---|
Extent Type: | Discrete |
Extent Start Date/Time: | 2014 |
Source Contribution: |
Photo Science performed a geodetic control survey in support of a digital orthophoto production project covering the AOI. The survey was done using the Global Positioning System (GPS). A combination of photo identifiable objects and pre-flight targeting was used to provide ground based photo control. Photo control points have a combined local and network accuracy at 95% confidence of less than or equal to five (5) centimeters horizontally and vertically as determined by the residuals of the network adjustment. | Source Geospatial Form: Model | Type of Source Media: CD-ROM |
LiDAR DEM/DTM
Publish Date: | 2014-12-16 |
---|---|
Extent Type: | Discrete |
Extent Start Date/Time: | 2014 |
Source Contribution: |
A compilation of topographic land form elevation datasets developed through photogrammetric data capture or through the use of existing elevation datasets from various sources for use in developing digital ortho imagery. | Source Geospatial Form: model | Type of Source Media: DVD |
Process Steps
Process Step 1
Description: |
Digital aerial imagery was obtained using a large format Z/I Digital Mapping Camera system (DMCii) equipped with Airborne GPS/IMU covering the AOI. A total of 278 flight lines with 2446 frames were collected in early 2014 in multi-spectral (RGB and NIR) 16 bits per band format. The imagery was acquired with a 112mm focal length at an altitude above mean terrain of 10,000' to yield a raw pixel resolution of 6" and 20,000' to yield a raw pixel resolution of 1' suitable for photogrammetric mapping and orthophoto production. The imagery was collected during leaf off conditions in early 2014 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 degrees. 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. |
---|---|
Process Date/Time: | 2014-01-01 00:00:00 |
Process Step 2
Description: |
Ground based photo control points were established throughout the area of interest using a combination of conventional and GPS survey methods in order to support softcopy aerotriangulation and photogrammetric mapping meeting the accuracies specified in this Scope of Work. This control supplemented the exposure station control obtained from the onboard Airborne Global Positioning System (ABGPS) and Inertial Measurement Unit (IMU). Photo control points established for this project have a combined local and network accuracy at 95% confidence of less than or equal to five (5) centimeters horizontally and vertically as determined by the residuals of the network adjustment. |
---|---|
Process Date/Time: | 2014-01-01 00:00:00 |
Process Step 3
Description: |
Utilizing all four pan-sharpened bands [blue (B), green (G), red(R) and near infrared (IR)] digital orthorectification was performed using cubic convolution algorithms resulting in a spatial and radiometric transformation of the digital image from line/sample space into State Plane Zone 1002 Georgia West. The interior and exterior orientation parameters 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 a 5,000 x 5,000 foot tiling scheme consisting of 3,148 individual ortho tiles. Delivery included digital ortho photos at a 6" or 1' pixel ground sample distance in 8 bit, 4 band (RGB and NIR) uncompressed GeoTIFF and MrSID files. The ortho photos meet a horizontal accuracy of +/- 2.5-feet or less at 95% confidence level when compared to higher accuracy check points based on NSSDA testing standards. |
---|---|
Process Date/Time: | 2013-01-01 00:00:00 |
Catalog Details
Catalog Item ID: | 48406 |
---|---|
GUID: | gov.noaa.nmfs.inport:48406 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-14 14:46+0000 |
Metadata Record Last Modified By: | Brianna Key |
Metadata Record Last Modified: | 2024-02-05 17:15+0000 |
Metadata Record Published: | 2024-02-05 |
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 |