Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2018 Title: Braddock West 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 Braddock Bay, 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/F74F1PX3 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F74F1PX3 Online_Linkage: https://www.sciencebase.gov/catalog/item/5a58c991e4b00b291cd6a63d 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 Braddock Bay, New York, July 10 to 11, 2017. Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F74F1PX3 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 Braddock Bay, New York, July 10 to 11, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/F74F1PX3. Online_Linkage: https://doi.org/10.5066/F74F1PX3 Online_Linkage: https://www.sciencebase.gov/catalog/item/5a329336e4b08e6a89d88012 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 vicinities of Braddock Bay, Sodus Bay, and 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: 20170710 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -77.713146 East_Bounding_Coordinate: -77.701520 North_Bounding_Coordinate: 43.311624 South_Bounding_Coordinate: 43.304969 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5a58c991e4b00b291cd6a63d 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: State of New York Department of Conservation Theme_Keyword: Federal Emergency Management Agency 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: Braddock Bay Wildlife Management Area Place_Keyword: Braddock Bay Place_Keyword: Greece, NY Place_Keyword: Braddock Point Place_Keyword: Westpoint Marina Place_Keyword: Braddock Bay Park 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: https://www.sciencebase.gov/catalog/file/get/5a58c991e4b00b291cd6a63d/?name=2017042FA_BraddockWest_CameraLocations_browse.jpg Browse_Graphic_File_Description: Browse image of the camera locations text file 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 within the project. A small number of additional photos were not included in Photoscan because of drop outs in the GPS signal that prevented the photos from being geotagged using Mission Planner (version 1.3.49). However, these photos that were omitted from the Photoscan projects have been provided in the photo zip files in this publication for completeness. All of the photos were re-geotagging using the ExifTool software, which may result in slightly different original camera position estimates between the original camera positions reported in this file and the photo position recorded in the EXIF header of the JPEG images. Completeness_Report: Twenty-two UAS flights (f1 - f22) were conducted in Braddock Bay survey areas along the NY Lake Ontario shoreline. Flights 2, 8, 9, 14, and 15 were aborted for reasons including errors in the telemetry log, loss of contact with GPS base station, and poor photo quality. During the 17 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. 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 1175 photos were imported into the Braddock West project (at the processor's discretion, some photos, usually those from the take-off and landing, were omitted). Photos that 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. To minimize the effects of changing environmental factors (e.g. shadows, lighting, etc) on the final products, the BraddockWest photogrammetry project contains only imagery from flights on July 10, 2017. 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: 2018 Title: Geotagged low-altitude aerial imagery from unmanned aerial systems (UAS) flights over of the Lake Ontario shoreline in the vicinity of Braddock Bay, New York, USA in July 2017 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F74F1PX3 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F74F1PX3 Type_of_Source_Media: raster digital images Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170710 Ending_Date: 20170711 Source_Currentness_Reference: ground condition; images were obtained between 20170710 and 20170711. Source_Citation_Abbreviation: geotagged aerial digital images Source_Contribution: The digital images are the raw data used to produce subsequent photogrammetric products. 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 Braddock Bay, New York, USA in July 2017 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F74F1PX3 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F74F1PX3 Type_of_Source_Media: text data files Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170710 Ending_Date: 20170711 Source_Currentness_Reference: ground condition; ground control points were obtained between 20170710 and 20170711. Source_Citation_Abbreviation: text files with ground control point (GCPs) Source_Contribution: The ground control points (GCPs; not transect points -- see metadata 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 Braddock Bay 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 determined using Mission Planner software (version 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 make up the general processing flow for creating digital elevation models from UAS flights: 1. Geotagged images (see source citation) 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. 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 by 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 file, 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_Braddock_West_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 was renamed (2017042FA_BraddockWest_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: 20200807 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: 1175 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: Braddock East 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 standard USGS format Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set of photograph name including: survey ID, Camera ID, flight ID, date and time, and original filename to ensure no duplicated filenames 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, but are otherwise the same as the coordinates in the photo EXIF GPS-tags. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 279947.8216 Range_Domain_Maximum: 280914.695 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, but are otherwise the same as the coordinates in the photo EXIF GPS-tags. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4798256.913 Range_Domain_Maximum: 4798965.5 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, but are otherwise the same as the altitudes in the photo EXIF GPS-tags. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 70.610 Range_Domain_Maximum: 171.5 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Error_(m) Attribute_Definition: total difference (in meters) between the initial coordinates from the UAS GPS log (inclduded 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 Range_Domain_Maximum: 68.295 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 (inclduded 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: -42.577513 Range_Domain_Maximum: 36.649155 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 (inclduded 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: -53.046004 Range_Domain_Maximum: 36.13526 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 (inclduded 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: -12.790666 Range_Domain_Maximum: 16.589517 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: 279953.9605 Range_Domain_Maximum: 280913.7166 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: 4798254.599 Range_Domain_Maximum: 4798966.82 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: 81.938835 Range_Domain_Maximum: 183.457731 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: 5.744054 Range_Domain_Maximum: 354.997242 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: -36.492916 Range_Domain_Maximum: 27.907664 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: -50.472354 Range_Domain_Maximum: 26.899018 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_BraddockWest_CameraLocations.csv. The text contains one header line denoted with a "#' character, followed by 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 BraddockWest 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 contains the CSV file with camera locations (2017042FA_BraddockWest_CameraLocations.csv), a browse graphic (2017042FA_BraddockWest_CameraLocations_browse.jpg), and FGDC CSDGM compliant metadata. 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_BraddockWest_CameraLocations.csv) and FGDC CSDGM compliant metadata in standard formats. File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip Transfer_Size: 0.077 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5a58c991e4b00b291cd6a63d Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5a58c991e4b00b291cd6a63d Network_Resource_Name: https://doi.org/10.5066/F74F1PX3 Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third 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: 20240319 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: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240319) 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