Identification_Information: Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20160916 Title: 2016 Morgan County, Georgia ADS100 4-Band 8 Bit Imagery Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM) Online_Linkage: https://coast.noaa.gov/dataregistry Online_Linkage: https://coast.noaa.gov/htdata/raster1/imagery/MorganGA_2016_5156 Online_Linkage: https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=5156 Description: Abstract: This data set consists of 0.5-foot pixel resolution, natural color orthoimages covering Morgan County, 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. Each orthoimage provides imagery over a 2,500-foot by 2,500-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. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160205 Ending_Date: 20160218 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.6957596981894 East_Bounding_Coordinate: -83.261092136295 North_Bounding_Coordinate: 33.8263380476349 South_Bounding_Coordinate: 33.4279010813398 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: 0.5 foot orthoimage Theme_Keyword: 6 inch orthoimage Theme_Keyword: rectified photograph Theme_Keyword: rectified image Theme_Keyword: orthophoto Theme_Keyword: natural color orthophoto Theme_Keyword: orthoimage Theme_Keyword: image map Place: Place_Keyword_Thesaurus: U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology. Place_Keyword: US Place: Place_Keyword_Thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National Institute of Standards and Technology. Place_Keyword: GA Place: Place_Keyword_Thesaurus: None Place_Keyword: Georgia Place_Keyword: Morgan County Access_Constraints: None 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 its limitations. Data_Set_Credit: Quantum Spatial, Inc. flew and processed the data. Native_Data_Set_Environment: ArcGIS 10.3; Microsoft Windows 10; Microsoft Office; Intergraph's suite of photogrammetric products including GeoMedia OrthoPro Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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. Logical_Consistency_Report: 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. 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. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Please see the Accuracy Analyst report for a detailed report showing the 15 control points measured to produce the NSSDA value of 0.582 feet. This meets the required value of +/- 2.5 feet. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 0.582 Horizontal_Positional_Accuracy_Explanation: NSSDA in feet. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Quantum Spatial, Inc. Publication_Date: 2016 Title: GPS Photo Control Survey for Georgia Counties: Morgan, Oconee, Newton, and Walton Geospatial_Data_Presentation_Form: Model Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: CONTROL Source_Contribution: Quantum Spatial 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_Information: Source_Citation: Citation_Information: Originator: Quantum Spatial, Inc. Publication_Date: 20160916 Title: Georeferenced Single Frames Geospatial_Data_Presentation_Form: remote-sensing image Type_of_Source_Media: external hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160205 Ending_Date: 20160218 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: PHOTO Source_Contribution: Aerial imagery was acquired using a Leica ADS 100 camera with a flight design that included a total of 64 flight lines for the entire project area. 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 5,965' above mean terrain for 0.5-foot imagery. Source_Information: Source_Citation: Citation_Information: Originator: Quantum Spatial, Inc. Publication_Date: Unknown Title: Aerotriangulation Geospatial_Data_Presentation_Form: model Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: AT 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_Information: Source_Citation: Citation_Information: Originator: Morgan County, GA Publication_Date: Unknown Title: LiDAR DEM Geospatial_Data_Presentation_Form: model Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: Unknown Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DEM Source_Contribution: A compilation of client-provided topographic land form elevation datasets for use in developing digital ortho imagery. Process_Step: Process_Description: Digital aerial imagery was obtained using a large format Leica ADS 100 camera system equipped with Airborne GPS/IMU covering the AOI. A total of 64 lines were collected in early 2016 in multi-spectral (RGB and NIR) 16 bits per band format. The imagery was acquired with a 62.5 mm focal length at an altitude above mean terrain of 5,965' to yield a pixel resolution of 0.5-feet suitable for photogrammetric mapping and orthophoto production. The imagery was collected during leaf off conditions in early 2016 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 blue, green, red, and near infrared bands. Process_Date: 2016 Process_Step: Process_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: 2016 Process_Step: Process_Description: Utilizing all four bands [blue (B), green (G), red(R) and near infrared (IR)], digital orthorectification was performed using bilinear interpolation 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 2,500 x 2,500 foot tiling scheme consisting of 1,731 individual ortho tiles. Delivery included digital ortho photos at a 0.5-foot pixel ground sample distance in 8 bit, 4 band (RGB and NIR) uncompressed GeoTIFF and MrSID Gen 2 (compression 40:1) 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: 2016 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 1250 Column_Count: 1250 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1983 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 1002 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9999 Longitude_of_Central_Meridian: -84.16666666666667 Latitude_of_Projection_Origin: 30.0 False_Easting: 2296583.333333333 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.5 Ordinate_Resolution: 0.5 Planar_Distance_Units: survey feet Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.2572221 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Natural color orthoimagery is organized in four color bands or channels which represent the red, green, blue, and near-infrared (RGB-IR) portions of the spectrum. Each image pixel is assigned a quadruplet of numeric values, one for each color band. Numeric values range from 0 to 255. Entity_and_Attribute_Detail_Citation: U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Office for Coastal Management Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: SC Postal_Code: 29405-2413 Contact_Voice_Telephone: 843-740-1202 Contact_Electronic_Mail_Address: coastal.info@noaa.gov Resource_Description: Downloadable Data Distribution_Liability: Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Erdas Imagine (.img) and TIFF / BigTIFF / GeoTIFF (.tif) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coast.noaa.gov/dataregistry/ Fees: None Metadata_Reference_Information: Metadata_Date: 20160916 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Office for Coastal Management Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: SC Postal_Code: 29405-2413 Contact_Voice_Telephone: 843-740-1202 Contact_Electronic_Mail_Address: coastal.info@noaa.gov Metadata_Standard_Name: FGDC CSDGM Metadata_Standard_Version: FGDC-STD-001-1998