Geotagged Low-Altitude Aerial Imagery From Unmanned Aerial Systems Flights Over Town Neck Beach, in Sandwich, Massachusetts, on September 18, 2017

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2019
Title:
Geotagged Low-Altitude Aerial Imagery From Unmanned Aerial Systems Flights Over Town Neck Beach, in Sandwich, Massachusetts, on September 18, 2017
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7QC02RM
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/F7QC02RM
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5a871ac5e4b00f54eb3a2d53
Larger_Work_Citation:
Citation_Information:
Originator: C. Sherwood
Originator: P. Traykovski
Originator: E. Montgomery
Originator: J. Borden
Originator: S. Brosnahan
Originator: B. Irwin
Originator: E. Marsjanik
Originator: M. Martini
Originator: S. Suttles
Publication_Date: 2019
Title:
Geotagged Low-Altitude Aerial Imagery From Unmanned Aerial Systems Flights Over Town Neck Beach, in Sandwich, Massachusetts, With Associated Ground Control Points, and Transects Collected on January 9, January 25, February 14, March 16, April 28, May 4, and September 18, 2017
Edition: 1.0
Geospatial_Data_Presentation_Form: digital files
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7QC02RM
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Sherwood, C.R., Traykovski, P.A., Montgomery, E.T., Borden, J., Brosnahan S.M., Irwin, B.J., Marsjanik, E.D., Martini, M.A., and Suttles, S.E., 2019, Geotagged low-altitude aerial imagery from unmanned aerial systems flights over Town Neck Beach in Sandwich, Massachusetts, with associated ground control points and transects, collected on January 9, January 25, February 14, March 16, April 28, May 4, and September 18, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/F7QC02RM.
Online_Linkage: https://doi.org/10.5066/F7QC02RM
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5a7daca0e4b00f54eb24a4f5
Description:
Abstract:
Low-altitude (80-100 meters above ground level) digital images of Town Neck Beach in Sandwich, Massachusetts, were obtained from a camera mounted on a small unmanned aerial system (UAS; also known as a drone). Imagery was collected at close to low tide to observe changes in beach and dune morphology. The images were geolocated by using the single-frequency geographic positioning system aboard the UAS. Ground control points (GCPs) were established by using temporary targets on the ground, which were located by using a real-time kinematic global navigation satellite system (RTK-GNSS) base station and rovers. The GCPs can be used as constraints during photogrammetric processing. Transect points were collected by using the same RTK-GNSS system; these can be used to evaluate photogrammetric products. This data release includes georeferenced images, image-location files, GCPs, and transect points. Collection of these data was supported by the U.S. Geological Survey Coastal and Marine Geology Program and were conducted under USGS field activity numbers 2017-005-FA, 2017-008-FA, 2017-010-FA, 2017-014-FA, 2017-027-FA, 2017-029-FA, and 2017-050-FA.
Purpose:
This dataset consists of overlapping aerial images obtained on September 18, 2017 that can be used with photogrammetric processing software to create point clouds, digital elevation models, and orthophoto mosaics.
Supplemental_Information:
For more information about this field activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-050-FA. Drone mapping was conducted at Town Neck Beach in Sandwich, Massachusetts beginning in 2015. The digital images, ground control points, and transect data from a calendar year are released together. This product contains the data collected in 2017.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170918
Ending_Date: 20170918
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Not planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.4886
East_Bounding_Coordinate: -70.4738
North_Bounding_Coordinate: 41.7712
South_Bounding_Coordinate: 41.7623
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5a871ac5e4b00f54eb3a2d53
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: shoreline
Theme_Keyword: 3DR Solo quadcopter
Theme_Keyword: Ricoh GRII
Theme_Keyword: shoreline photographs
Theme_Keyword: photographs
Theme_Keyword: photos
Theme_Keyword: JPEG
Theme_Keyword: low-altitude aerial imagery
Theme_Keyword: aerial imagery
Theme_Keyword: UAS
Theme_Keyword: Unmanned aerial system
Theme_Keyword: geotagged photos
Theme_Keyword: field activity number 2017-050-FA
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: aerial and satellite photography
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: remote sensing
Theme_Keyword: aerial photography
Theme_Keyword: image collections
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme_Keyword: location
Theme_Keyword: elevation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: USA
Place_Keyword: Sandwich
Place_Keyword: Massachusetts
Place_Keyword: Town Neck Beach
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_Person_Primary:
Contact_Person: Sandra Brosnahan
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The Ricoh GRII HD cameras used on the UAS acquires photos at 16.2 Megapixels, with file sizes generally between 4 and 6 MB on disc, depending on image complexity. The GPS used on the UAS has theoretical accuracies of 3 meters horizontally and 10 m vertically.
Logical_Consistency_Report:
Flights were flown at a target elevation of 80 m along pre-planned lines with 70% cross-track overlap. Two sets of flight lines were flown, one set was approximately northwest/southeast, and the second set was at right angles to the first set. Flights lasted the duration of the UAS battery life (maximum 15 minutes) or until the flight was completed or aborted. Along-track overlap was determined by the image acquisition rate. The camera was set to record images at 2-second intervals, activated before takeoff, and deactivated after landing. Preflight photos of UTC time displayed on an accurate timepiece were captured with the camera and used to monitor camera clock drift. Camera time and UTC time were never different (to a 1 second accuracy) during this survey.
Completeness_Report:
Ten UAS flights were conducted to map the Town Neck Beach shoreline in Sandwich, MA on September 18, 2017. There is no flight #5- it was aborted on takeoff and no images were obtained. During the other flights, photographs were captured every 2 seconds. Gaps in sequential 2 second photo intervals exist because some photos were deleted because, for example, of overexposure, or to avoid multiple photos of the landing area.
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 receives signals from GPS and GLONASS satellites in WGS84, (G1150) EPSG::7660, but is otherwise uncorrected. Horizontal locations are considered accurate to approximately 3 meters, but may be off by as much as 10 meters due to UAS flight path and uncertainty associated with the geotagging process.
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 a mRo GPS (u-Blox Neo-M8N / 3DR SOLO Upgrade), which receives signals from GPS and GLONASS satellites, but is otherwise uncorrected. Vertical locations are less accurate than horizontal positions and may be off by more than 10 meters.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title:
Geotagged photos collected from a UAS during field activity 2017-050-FA
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-050-FA
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170918
Ending_Date: 20170918
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: aerial images from field activity 2017-050-FA
Source_Contribution:
These JPEG images were collected with a Ricoh GRII HD camera labeled 'RI99', where 'RI' indicates a Ricoh camera, and the following 2 digits normally indicate the camera ID. In this case, '99' indicates that the camera ID is unknown. The camera was mounted on a 3DR Solo quadcopter unmanned aerial system (UAS; FAA small UAS registration number FA3R4LWWY9) for each flight. The Ricoh GRII HD cameras used on the UAS acquire photos at 16.2 Megapixels, with file sizes generally between 4 and 6 MB on disc, depending on image complexity. The camera orientaion for all flights was "down", aimed directly below the UAS. Horizontal positions and elevations were recorded in the UAS onboard navigation logs and were derived from a mRo GPS (u-Blox Neo-M8N / 3DR SOLO Upgrade), which receives signals from GPS and GLONASS satellites in WGS84, but is otherwise uncorrected. The navigation data is added to the image EXIF information after the flight as described in the process steps. These JPEG images may be used with photogrammetric software to produce geolocated point clouds, digital elevation models, orthophoto mosaics, and other products.
Process_Step:
Process_Description:
The UAS GPS recorded in local (EST) time and the camera recorded in UTC, therefore a 14400 second correction (4 hours: difference between EST and UTC) was was needed to synchronize the camera and the GPS clocks. The raw images acquired by the Ricoh camera mounted on the 3DR Solo quadcopter were geotagged using Mission Planner software from Ardupilot.org. The sofware plans and executes the flights then was used to apply the time correction, and apply the positions and elevations logged in the tlog navigation file to the images. The geotagged images were then processed to add additional information required by USGS to the EXIF headers using ExifTools (https://www.sno.phy.queensu.ca/~phil/exiftool/, version: 10.64) and the files were renamed to a unique identifier using Namexif (version 1.7) to avoid any possibility of duplicate names. These steps are described here:
1) ExifTools was used to add required attribution tags to all the photos. The the command used to update the tags was: exiftool -CopyrightNotice="Public Domain - please credit U.S. Geological Survey " -ImageDescription ="Photographs of Town Neck Beach, Sandwich, Massachusetts, USA from survey 2017-050-FA " -Caption-Abstract="Town Neck Beach, Sandwich, Massachusetts, USA from survey 2017-050-FA " -Caption="Town Neck Beach, Sandwich, Massachusetts, USA from survey 2017-050-FA " -sep ", " -keywords="Town Neck Beach, Sandwich, Massachusetts, 2017-050-FA, UAS, aerial imagery, USGS " -comment="Photo from down-looking UAS camera during survey 2017-050-FA." -Credit="U.S. Geological Survey" -Contact="WHSC_data_contact@usgs.gov " -Artist="Sandy Brosnahan" *.JPG
2) All the JPEG images were renamed with Namexif (version 1.7, http://www.digicamsoft.com/softnamexif.html) to ensure unique filenames and compliance with USGS Coastal and Marine Geology Program's best practices for image naming convention. Images were renamed with a survey ID prefix followed by a local USGS UID, which corresponds to a distinct UAS project; a camera ID that distinguishes among USGS cameras by make, model, and camera number; the image acquisition date and coordinated universal time (UTC) in ISO8601 format; and a suffix with the original image name. For example, image name '2017050FA_U039RI02_20170918T190922Z_B0022888.JPG', 2017050FA is the survey ID, U039 is the internal identifier code, RI02 is the internal camera ID, 20170918 is the UTC date in format YYYYMMDD. A 'T' is used to separate UTC date from UTC time in format HHMMSS followed by a Z, and B0022888.JPG is the original raw photo name appended to the end of the new filename.
Process_Date: 20170918
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ellyn Montgomery
Contact_Organization: U.S. Geological Survey
Contact_Position: Oceanographer
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 x2356
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: emontgomery@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: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 3264
Column_Count: 4352
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: IGS08 (EPOCH:2017.8707)
Altitude_Resolution: 0.01
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Attribute values
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
There are no additional attributes besides the tags described in data quality section associated with these images.
Entity_and_Attribute_Detail_Citation: USGS Field Activity 2017-050-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 data release includes raw data in the form of geotagged aerial images in JPEG format. The aerial images are distributed in 10 zip files containing images named 2017050FA_U039_Sandwich_f#.zip; where f# indicates the flight number. 2017050FA_U039_Sandwich_f1.zip contains 365 images,2017050FA_U039_Sandwich_f2.zip contains 187 images, 2017050FA_U039_Sandwich_f3.zip contains 356 images,2017050FA_U039_Sandwich_f4.zip contains 240 images, 2017050FA_U039_Sandwich_f6.zip contains 274 images, 2017050FA_U039_Sandwich_f7.zip contains 372 images, 2017050FA_U039_Sandwich_f8.zip contains 392 images, 2017050FA_U039_Sandwich_f9.zip contains 261 images, 2017050FA_U039_Sandwich_f10.zip contains 381 images, and 2017050FA_U039_Sandwich_f11.zip contains 256 images.
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: JPEG
Format_Version_Number: 1.0.0
Format_Specification: JPEG
Format_Information_Content:
Zipped files contain geotagged aerial images collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center along Sandwich Town Neck Beach, MA. These data are contained organized by flight number. Transfer sizes will vary; the size listed is for the first flight.
File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip
Transfer_Size: 2015.53
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/5a871ac5e4b00f54eb3a2d53
Network_Resource_Name: https://doi.org/10.5066/F7QC02RM
Access_Instructions:
The large file handler located on the data page is recommended for downloading the images. The first link in the list above is to the data page and the second link is to the publication landing page.
Fees: none
Technical_Prerequisites:
Use of this file requires software capable of opening JPEG images and, if desired, capable or reading the associated EXIF information.
Metadata_Reference_Information:
Metadata_Date: 20220707
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ellyn Montgomery
Contact_Organization: U.S. Geological Survey
Contact_Position: oceanographer
Contact_Address:
Address_Type: mailing and physical
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 x2356
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 metadata contact is no longer with the USGS or the email is otherwise invalid.
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_F7QC02RM/2017050FA_U039_Sandwich_meta.html>
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