Chimney Bluffs camera locations and attitudes for low-altitude aerial images collected during unmanned aerial systems (UAS) flights over of the Lake Ontario shoreline in the vicinity of Chimney Bluffs, New York in July 2017

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2018
Title:
Chimney Bluffs camera locations and attitudes for low-altitude aerial images collected during unmanned aerial systems (UAS) flights over of the Lake Ontario shoreline in the vicinity of Chimney Bluffs, New York in July 2017
Edition: 1.0
Geospatial_Data_Presentation_Form: digital text files
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9W81QEZ
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.5066/P9W81QEZ
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Christopher R. Sherwood
Originator: Sandra M. Brosnahan
Originator: Seth D. Ackerman
Originator: Jonathan Borden
Originator: Ellyn T. Montgomery
Originator: Elizabeth A. Pendleton
Originator: Emily J. Sturdivant
Publication_Date: 2018
Title:
Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Chimney Bluffs, New York, July 14, 2017
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9W81QEZ
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Sherwood, C.R., Brosnahan, S.M., Ackerman, S.D., Borden, Jonathan, Montgomery, E.T., Pendleton, E.A., and Sturdivant, E.J., 2018, Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Chimney Bluffs, New York, July 14, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P9W81QEZ.
Online_Linkage: https://doi.org/10.5066/P9W81QEZ
Online_Linkage:
Description:
Abstract:
Low-altitude (80-100 meters above ground level) digital images were obtained from a camera mounted on a 3DR Solo quadcopter, a small unmanned aerial system (UAS), in three locations along the Lake Ontario shoreline in New York during July 2017. These data were collected to document and monitor effects of high lake levels, including shoreline erosion, inundation, and property damage in the vicinity of Chimney Bluffs State Park, New York. This data release includes images tagged with locations determined from the UAS GPS; tables with updated estimates of camera positions and attitudes based on the photogrammetric reconstruction; tables listing locations of the base stations, ground control points, and transect points; geolocated, RGB-colored point clouds; orthomosaic images; and digital elevation models for each of the survey regions. Collection of these data was supported by the Federal Emergency Management Agency, the State of New York Departments of State and Environmental Conservation, and the USGS Coastal and Marine Geology Program and was conducted under USGS field activity number 2017-042-FA.
Purpose:
This camera location data provides updated image location information as determined by the Agisoft Photoscan software as a result of processing that included automated image alignment, lens calibration and using independent ground control data. The cameras (or images) noted in this table were imported into the Photoscan software and, if successfully aligned, they were used in the creation of the final photogrammetric products (including point clouds, digital elevation models and orthomosaics). In addition to XYZ location, attitude data estimates (yaw, pitch and roll), and error values from the original photo GPS data are also included.
Supplemental_Information:
For more information about this field activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-042-FA. Photogrammetric processing using ground control points produces estimates of camera location and attitude (roll, pitch, and yaw) with much higher accuracies. These tables contain position and attitude estimates derived from photogrammetric post-processing and are considered to have better positional accuracy than the GPS information provided in the EXIF headers in the images in the photo dataset.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20170714
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.916299
East_Bounding_Coordinate: -76.905190
North_Bounding_Coordinate: 43.291886
South_Bounding_Coordinate: 43.285633
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5b28587ae4b0592076260e42
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: State of New York Department of State
Theme_Keyword: New York State Department of Environmental Conservation
Theme_Keyword: Federal Emergency Management Agency
Theme_Keyword: FEMA
Theme_Keyword: 3DR Solo quadcopter
Theme_Keyword: Ricoh GRII
Theme_Keyword: low-altitude aerial imagery
Theme_Keyword: aerial imagery
Theme_Keyword: shoreline photographs
Theme_Keyword: photographs
Theme_Keyword: photos
Theme_Keyword: UAS
Theme_Keyword: Unmanned aerial system
Theme_Keyword: lakeshore
Theme_Keyword: Agisoft Photoscan
Theme_Keyword: camera locations
Theme_Keyword: navigation
Theme_Keyword: Global Positioning System
Theme_Keyword: GPS
Theme_Keyword: field activity number 2017-042-FA
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: navigational data
Theme_Keyword: remote sensing
Theme_Keyword: aerial photography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: inlandWaters
Theme_Keyword: location
Theme_Keyword: elevation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: USA
Place_Keyword: Great Lakes
Place_Keyword: New York
Place_Keyword: Lake Ontario
Place_Keyword: Chimney Bluffs
Place_Keyword: Chimney Bluffs State Park
Place_Keyword: Huron, NY
Access_Constraints: none
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Sandra Brosnahan
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description: Browse image of the camera locations
Browse_Graphic_File_Type: JPEG
Data_Quality_Information:
Logical_Consistency_Report:
Coordinates recorded for each record describe discrete positions in space and the visual reflectance at the time of capture and the estimated position based on automated alignment done by the photogrammetry software. Agisoft Photoscan software determines the photos used in the construction of the products (Point Cloud, DEM and Orthomosaic) based on the ability to align the photo and the usability of valid tie points within an image. Images that were not successfully aligned but were imported into the software retain the original camera (image) position data but have the no-data value (NaN) for all of the processed data fields. Some photos from each flight were not loaded into photoscan by the processor. These photographs are typically from takeoff and landing, and were eliminated to reduce the total number of photographs with in the project, but have been provided in the photo zip files in this publication.
Completeness_Report:
Four UAS flights (f41 - f44) were conducted in Chimney Bluffs survey areas along the Lake Ontario shoreline of New York. During the 4 successful flights, photographs were captured every 2 seconds. Gaps in sequential 2-second photo intervals exist because some photos were deleted because of bad exposure, slow shutter speed, excessive tilt, or low altitude during takeoff and landing. Not all of the images loaded into the photogrammetry software were used in the reconstruction. Not all images in the photo zip files were loaded into Photoscan. Some were omitted automatically because they yielded an insufficient number of tie points relating them to the others. Location and attitude information was calculated for all of the images used in the reconstruction, and that information is provided for only for those photos. A total of 1665 photos were imported into the Chimney Bluffs project. Photos what were not aligned in the project are included in this data table but have the no-data value (NaN) for all of the processed data fields.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positions recorded in the UAS flight logs and later applied to the EXIF portion of the images were derived from a mRo GPS (u-Blox Neo-M8N / 3DR SOLO Upgrade), which received signals from GPS and GLONASS satellites, but are otherwise uncorrected. Horizontal locations for the original photo dateset are considered accurate to approximately 3 meters, but may be off by as much as 10 meters. Horizontal camera positions, presented in this dataset, are calculated from photogrammetry and are considered more accurate because the location takes into account the overall reconstruction of the Photoscan project incorporating tie points from adjacent aerial photos and the ground control point data. The estimated camera positions are likely accurate to within 0.2 m.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Vertical positions recorded in the UAS flight logs and later applied to the EXIF portion of the images were derived from a mRo GPS (u-Blox Neo-M8N / 3DR SOLO Upgrade), which receives signals from GPS and GLONASS satellites, but is otherwise uncorrected. Vertical locations from the GPS are considered to be less accurate than horizontal positions and may be off by more than 10 meters. Like the horizontal camera positions, the vertical camera positions, presented in this dataset, are calculated from photogrammetry and are considered more accurate because the location takes into account the overall reconstruction of the Photoscan project incorporating tie points from adjacent aerial photos and the ground control point data. The estimated camera positions are likely accurate to within 0.2 m.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: unpublished material
Title:
Field geotagged aerial imagery from unmanned aerial systems (UAS) flights over of the Lake Ontario shoreline in the vicinity of Chimney Bluffs, New York in July 2017
Type_of_Source_Media: raster digital images
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20170714
Source_Currentness_Reference: ground condition of when images were taken
Source_Citation_Abbreviation: geotagged aerial digital images
Source_Contribution:
These are the images geotagged in the field and used to produce the subsequent photogrammetric products. The images available from the larger work citation of this data release have updated geotag information.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2018
Title:
Ground control point and transect locations associated with images collected during unmanned aerial systems (UAS) flights over the Lake Ontario shoreline in the vicinity of Chimney Bluffs, New York in July 2017
Other_Citation_Details:
available from the Larger Work citation of this dataset (Suggested citation: Sherwood, C.R., Brosnahan, S.M., Ackerman, S.D., Borden, Jonathan, Montgomery, E.T., Pendleton, E.A., and Sturdivant, E.J., 2018, Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Chimney Bluffs, New York, July 14, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P9W81QEZ.)
Type_of_Source_Media: text data files
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20170714
Source_Currentness_Reference: ground condition of when images were taken
Source_Citation_Abbreviation: GCPs
Source_Contribution:
The ground control points (GCPs; not transect points - see metadata for that dataset available from the larger work citation for more information) were used to geolocate the photogrammetric products.
Process_Step:
Process_Description:
During USGS field activity 2017-042-FA, digital images were taken approximately 80 and 100 m above the ground on July 10 - 14, 2017, with a Ricoh GRII digital camera mounted in a 3DR Solo quadcopter operated by the U.S. Geological Survey. This camera location file, for the Chimney Bluffs project, was created using a standard processing flow as described in the processing steps below. These camera locations are the product of one of several photogrammetry projects from field activity 2017-042-FA. Two projects incorporated flights over Braddock Bay on July 10 and 11, 2017 (Braddock West, Braddock East); four were used for flights in the vicinity of Sodus Bay on July 12, 13, and 14, 2017 (Lake Bluff / Crescent Bar, Crescent Bar / Charles Point, Sodus North, and Greig Street); and one project incorporated flights over Chimney Bluffs on July 14, 2017.
For this camera location file, original camera position estimates were determine using Mission Planner software (verion 1.3.49). These position estimates are written to the header of JPEG images in a process know as geotagging. Geotagging functionality in Mission Planner is accessed from the main menu by clicking 'control'and 'F', and then choosing 'GeoRef Images' from the menu that pops up. Geotagging requires a telemetry log (created by mission planner during survey flight), photos (collected by the Ricoh camera during flight), and a time offset between camera and GPS if applicable. The updated camera locations also present in this dataset were determined using photogrammetry software (Agisoft Photoscan Professional v. 1.3.2), and differ from the original position estimates due to photogrammetric correction and ground control adjustments.
Process_Date: 201709
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Person: Christopher R. Sherwood
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: U.S.A.
Contact_Voice_Telephone: 508-548-8700 x2269
Contact_Facsimile_Telephone: 508 457 2310
Contact_Electronic_Mail_Address: csherwood@usgs.gov
Process_Step:
Process_Description:
The following steps are the processing flow for creating digital elevation models from UAS flights:
1. Geotagged images created in the field (see source citation and previous processing step) containing useful imagery from the survey area were imported into Agisoft Photoscan Professional v. 1.3.2 software using the “Add photos…” tool. Photos taken before and immediately after takeoff, photos taken immediately prior to and after landing, and photos with 100% water were not loaded into the project or not used if they were. Project coordinate system is set to EPSG::7660 WGS84 (G1150) geocentric coordinate system.
2. Using ”Convert”, the coordinate system of the images (called “cameras” in Photoscan) was converted from native latitude/longitude WGS84 (G1150) coordinate system to meters in NAD83/UTM zone 18N (EPSG::26918).
3. The photos were processed through an initial alignment and optimization procedure using the following settings:
Alignment - Accuracy: “High”; Pair selection: “Reference”; Key point limit: 80,000; Tie point limit; 0 (unlimited). Adaptive camera model fitting option was selected.
Optimization - Lens-calibration parameters f, cx, cy, k1, k2, k3, p1, and p2 were included; b1, b2, and higher-order parameters k4, p3, and p4 were not.
4. The sparse point cloud (also known as tie points; created as a result of photo alignment and optimization) was edited using an iterative error-reduction procedure to filter the data. This was done in several iterations of a process called "Gradual Selection" to first to reduce reconstruction uncertainty (to a unitless value of 10) and then projection accuracy (to a weighted value of 3).
5. Ground control points were created by first letting the software automatically detect markers where it finds all of the 4-ft square black/white targets deployed (false targets that are sometimes detected were manually deleted). The automatically-generated marker labels were manually changed to match the names in the survey notes and GCP location files.
6. "Import markers” was used to load the GCP location files, which assigned coordinates (northing, easting, and elevation in UTM Zone 18 North meters in NAD83 and NAVD88 coordinate systems) from the location file to the detected markers. The locations of auto-detected markers were retained.
7. Another round of "Gradual Selection" was done to reduce the reprojection error (to a value of 0.3 pixels, unless more than 10% of the points would be removed).
8. A dense point cloud was then created with the parameters "High" quality and “Aggressive” depth filtering.
9. A DEM was create with the parameters Source data="Dense Cloud" Interpolation="Enabled" Resolution="0.05"
10. An orthomosaic was create with the parameters Surface="DEM" Blending mode="Mosaic" Pixel size X="0.025" Pixel size Y="0.025"
11. The camera locations data (this dataset) was exported in CSV text format (2017-07-10_ChimneyBluffs_CAMERAS.csv) from Photoscan with the following parameters (Items=Cameras, Delimiter=Comma, Columns=[all boxes checked on] with Precision=6). This file was manually edited to remove columns that contained no data for all records and to fill those columns for the photos not successfully aligned with a no-data value of "NaN". Then the file renamed to 2017042FA_ChimneyBluffs_CameraLocations.csv).
Process_Date: 20170913
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Person: Christopher R. Sherwood
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: U.S.A.
Contact_Voice_Telephone: 508-548-8700 x2269
Contact_Facsimile_Telephone: 508 457 2310
Contact_Electronic_Mail_Address: csherwood@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200806
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 1665
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Universal Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.00000
Latitude_of_Projection_Origin: 0.000
False_Easting: 500000.0000
False_Northing: 0.0000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.000001
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Attribute values
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Chimney Bluffs camera locations
Entity_Type_Definition:
These locations have been processed using photogrammetric software and ground control points and are considered more accurate than the GPS coordinates recorded by the UAS-attached GPS and included in the photograph EXIF tags.
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Label
Attribute_Definition: Photograph name in camera format
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: character set of orignial photograph name
Attribute:
Attribute_Label: X/Easting
Attribute_Definition:
Easting coordinate of the camera in UTM Zone 18 meters, NAD83 (EPSG::26918) as determined by the UAS-attached GPS and applied to photo during 'geotagging'. These coordinates were converted from WGS84 to NAD83, upon import to Photoscan. Note these coordinates may be slightly different than the coordinates in the JPG photo EXIF GPS-tags because a different process was used to geotag the images in the field data (which was then used in Photoscan).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 344584.0192
Range_Domain_Maximum: 345392.4855
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Y/Northing
Attribute_Definition:
Northing coordinate of the camera in UTM Zone 18 meters, NAD83 (EPSG::26918) as determined by the UAS-attached GPS and applied to photo during 'geotagging'. These coordinates were converted from WGS84 to NAD83, upon import to Photoscan. Note these coordinates may be slightly different than the coordinates in the JPG photo EXIF GPS-tags because a different process was used to geotag the images in the field data (which was then used in Photoscan).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4794374.333
Range_Domain_Maximum: 4794934.609
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Z/Altitude
Attribute_Definition:
Orthometric height of the camera in NAD83 (EPSG::26918) as determined by the UAS-attached GPS and applied to photo during 'geotagging'. These altitudes were converted from WGS84 (ellipsoidal heights) to NAD83, upon import to Photoscan. Note these coordinates may be slightly different than the coordinates in the JPG photo EXIF GPS-tags because a different process was used to geotag the images in the field data (which was then used in Photoscan).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 96.410049
Range_Domain_Maximum: 231.670049
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Error
Attribute_Definition:
total difference (in meters) between the initial coordinates from the UAS GPS log (included in the photograph EXIF GPStags header) and the coordinates estimated from the photogrammetric reconstruction.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.353482
Range_Domain_Maximum: 32.497994
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: X_error
Attribute_Definition:
X difference (in meters) between the initial Easting coordinates from the UAS GPS log (included in the photograph EXIF GPStags header) and the coordinates estimated from the photogrammetric reconstruction.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -31.084222
Range_Domain_Maximum: 23.968332
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Y_error
Attribute_Definition:
Y difference (in meters) between the initial Northing coordinates from the UAS GPS log (included in the photograph EXIF GPStags header) and the coordinates estimated from the photogrammetric reconstruction.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -20.618185
Range_Domain_Maximum: 22.51113
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Z_error
Attribute_Definition:
Z difference (in meters) between the initial altitude coordinates from the UAS GPS log (included in the photograph EXIF GPStags header) and the coordinates estimated from the photogrammetric reconstruction.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -13.419674
Range_Domain_Maximum: 7.778454
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: X_est
Attribute_Definition:
X-coordinate of the camera in UTM Zone 18 meters, NAD83 (EPSG::26918) estimated from the photogrammetric reconstruction using ground control points
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 344584.8333
Range_Domain_Maximum: 345393.5749
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Y_est
Attribute_Definition:
Y-coordinate of the camera in UTM Zone 18 meters, NAD83 (EPSG::26918) estimated from the photogrammetric reconstruction using ground control points
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4794373.61
Range_Domain_Maximum: 4794934.182
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Z_est
Attribute_Definition:
Z-coordinate (altitude) of the camera in meters adjusted to the NAVD88 orthometric heights as estimated from the photogrammetric reconstruction using ground control points
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 96.606998
Range_Domain_Maximum: 227.191181
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Yaw_est
Attribute_Definition:
estimated (by photogrammetric reconstruction) rotation of the camera relative to the y-axis
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.091947
Range_Domain_Maximum: 359.897466
Attribute_Units_of_Measure: degrees
Attribute:
Attribute_Label: Pitch_est
Attribute_Definition:
estimated (by photogrammetric reconstruction) rotation of the camera relative to the x-axis
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -21.336415
Range_Domain_Maximum: 74.260843
Attribute_Units_of_Measure: degrees
Attribute:
Attribute_Label: Roll_est
Attribute_Definition:
estimated (by photogrammetric reconstruction) rotation of the camera relative to the z-axis
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -30.879107
Range_Domain_Maximum: 29.068006
Attribute_Units_of_Measure: degrees
Overview_Description:
Entity_and_Attribute_Overview:
The list of images and camera location information are provided in a CSV text file named 2017042FA_ChimneyBluffs_CameraLocations.csv. The text contains rows of data records; there are 14 columns of data separated by commas. The first header row specifies the column headings for the data, as follows: Label (full name of the image file), X/Easting, Y/Northing, and Z/Altitude (initial horizontal and vertical coordinates from the UAS GPS log), Error_(m), X_error Y_error, Z_error (total distance, and x, y, an z components of the distances (meters) between the initial coordinates from the UAS GPS log and the coordinates estimated from the photogrammetric reconstruction), X_est, Y_est, Z_est (coordinates estimated from the photogrammetric reconstruction), Yaw_est, Pitch_est, Roll_est (camera attitude estimated from the photogrammetric reconstruction). The fields X/Easting, Y/Northing, and Z/Altitude are the uncorrected horizontal and vertical values and are therefore reported in this PhotoScan export in the coordinate system and vertical datum of original projection of the ChimneyBluffs project (see process number 2 in the processing steps above). The fields X_est, Y_est, Z_est are in coordinates corrected by the image alignment and photogrammetry process; the X_est and Y_est are in the horizontal datum of the PhotoScan project (NAD83 UTM Zone 18 EPSG::26918) and the Z_est values are referenced to the NAVD88 vertical datum. If the image was not successfully aligned in the photogrammetric reconstruction, estimated camera location and attitude are not available, and only the first five columns contain valid data. Missing data for these unused cameras (images) are indicated by "NaN".
Entity_and_Attribute_Detail_Citation: USGS Field Activity 2017-042-FA
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
This dataset (2017042FA_ChimneyBluffs_CameraLocations) contains the CSV file with camera locations (2017042FA_ChimneyBluffs_CameraLocations.csv), a browse graphic (2017042FA_ChimneyBluffs_CameraLocations_browse.jpg), and FGDC CSDGM compliant metadata in XML format.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content:
A CSV files with camera locations (2017042FA_ChimneyBluffs_CameraLocations.csv) and FGDC CSDGM compliant metadata in XML format.
Transfer_Size: 0.233
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link is to the page containing the data. The second is a direct link to download all data available from the page as a zip file. And the final link is to the publication landing page.
Fees: none
Technical_Prerequisites:
The CSV file is plain text with comma separated values. It can be read with most text editors or spreadsheet programs.
Metadata_Reference_Information:
Metadata_Date: 20200806
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandra Brosnahan
Contact_Organization: U.S. Geological Survey
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9W81QEZ/2017042FA_ChimneyBluffs_CameraLocations.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:20:11 2021