Structure-from-Motion point clouds from the Florida Keys, 2019

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Jonathan A. Warrick
Originator: Andrew C. Ritchie
Originator: Evan T. Dailey
Originator: Gerald A. Hatcher
Originator: Christine Kranenburg
Originator: David G. Zawada
Originator: Kimberly K. Yates
Publication_Date: 2020
Title: Structure-from-Motion point clouds from the Florida Keys, 2019
Geospatial_Data_Presentation_Form: LAZ
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9V7K7EG

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9V7K7EG
Online_Linkage:

https://cmgds.marine.usgs.gov/data-releases/datarelease/10.5066-P9V7K7EG/dataset/6/

Larger_Work_Citation:

Citation_Information:

SQUID-5 structure-from-motion point clouds, bathymetric maps, orthomosaics, and underwater photos of coral reefs in Florida, 2019

Geospatial_Data_Presentation_Form: Digital
Series_Information:

Series_Name: data release
Issue_Identification: doi:10.5066/P9V7K7EG

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9V7K7EG

Description:

Abstract:

Structure-from-Motion (SfM) point clouds were created from seafloor images collected using the new 5-camera system SfM Quantitative Underwater Imaging Device with Five Cameras (SQUID-5). Images were collected in July 2019 by towing the SQUID-5 in 3 to 4 meters of water off of Islamorada in the Florida Keys during 3 days. The five cameras were synchronized together and with a survey-grade Global Positioning System (GPS). Images were collected over diverse benthic settings, including living and senile reefs, rubble, and sand. Point clouds were created from the photos using SfM photogrammetric software.

Purpose:

These point clouds were produced to determine the accuracy, precision, and effectiveness of the new SQUID-5 camera platform.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-630-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-323-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20190706
Ending_Date: 20190716

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -80.62214
East_Bounding_Coordinate: -80.52600
North_Bounding_Coordinate: 24.91171
South_Bounding_Coordinate: 24.89666

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:96a9ce9f-a9f9-4d7d-b3e5-c2752477e2c1

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: bathymetry
Theme_Keyword: bathymetry measurement
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
Theme_Keyword: remote sensing

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seabed
Theme_Keyword: data processing

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: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: St. Petersburg Coastal and Marine Science Center
Theme_Keyword: SPCMSC

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Crocker Reef
Place_Keyword: Florida Keys
Place_Keyword: Straits of Florida
Place_Keyword: State of Florida

Access_Constraints: None
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator of the dataset and in products derived from these data. This information is not intended for navigation purposes.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://cmgds.marine.usgs.gov/data-releases/media/2020/10.5066-P9V7K7EG/5a717b4a06954f5fbd9272f63990cfb4/Points_browse.png

Browse_Graphic_File_Description: Perspective view of a SfM point cloud
Browse_Graphic_File_Type: PNG

Data_Set_Credit: Data collection was funded by U.S. Geological Survey
Native_Data_Set_Environment: Microsoft Windows 10

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The horizontal and vertical accuracies of the surface models were compared against GPS survey data of known features covered by the survey.

Logical_Consistency_Report: All data fall within expected ranges.
Completeness_Report:

Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

SfM-based measurements of the Sediment Elevation Table (SET) stations were within 3 cm of the total uncertainty of the field-based GPS measurements. The average horizontal scaling of the models is between 0.016% and 0.024% of water depth.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Structure-from-Motion underwater photos from the Florida Keys, 2019

Geospatial_Data_Presentation_Form: BMP
Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9V7K7EG

Type_of_Source_Media: digital images
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20190706
Ending_Date: 20190716

Source_Currentness_Reference: ground condition at time data were collected

Source_Citation_Abbreviation: imagery
Source_Contribution:

Digital underwater imagery from which Structure-for-Motion point cloud data were generated

Process_Step:

Process_Description:

Structure-from-Motion Processing: the complete photo sets of each study area were subsampled such that minimum GPS spacing between the center camera location per collection instance was at least 0.75 m. For each survey site, the subsampled photo quintets were combined with GPS positions and camera-to-GPS-antennae distance vectors (lever arm offsets) and aligned with independent lens models for each camera. The computed camera positions and lens models were then refined using three statistical tools (reconstruction uncertainty, projection accuracy, and reprojection error) in Metashape to eliminate poorly constructed tie points. With trial and error, we found that threshold values of 20, 8 and 0.4 for these statistical tools, respectively, resulted in good alignment and adequately dense tie point distributions in both complex reef settings and simple sandy areas. Once the photo alignment and lens models were optimized, dense point clouds were generated with Metashape using the high point density and moderate filtering settings and exported in LAZ format.

Source_Used_Citation_Abbreviation: imagery
Process_Date: 202001

Process_Step:

Process_Description:

Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.

Process_Date: 20201019
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

Process_Step:

Process_Description:

Corrected working URL links to cmgds data repository to the actual published links

Process_Date: 20210317
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Susan A. Cochran

Contact_Position: Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 17N
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -81
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.01
Ordinate_Resolution: 0.01

Planar_Distance_Units: METERS

Geodetic_Model:

Horizontal_Datum_Name: NAD_1983_2011_UTM_Zone_17N
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: MLLW
Altitude_Resolution: 1.0E-4
Altitude_Distance_Units: Meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Attribute table
Entity_Type_Definition:

Table containing attribute information associated with the dataset

Entity_Type_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: Value
Attribute_Definition: Depth relative to mean lower low water (MLLW) in meters
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -2.26071
Range_Domain_Maximum: -5.05259
Attribute_Units_of_Measure: Meters

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: Mailing and Physical
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:

These data are available in LAZ format (JD192_SET1_PointCloud.laz, JD193_SET1_PointCloud.laz, JD193_SET2_PointCloud.laz, JD194_CheecaRx_PointCloud.laz) contained in a single zip file, along with CSDGM FGDC-compliant metadata, and a browse image map of the data (.png). The LAZ data files are named with the following convention: Julian Day number, area, and "PointCloud."

Distribution_Liability:

Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: LAZ
Format_Version_Number:

Agisoft Metashape Professional Version 1.5.2 build 8432 (64 bit)

Format_Information_Content: The .zip file contains four point clouds (.laz).
File_Decompression_Technique: No compression applied.
Transfer_Size: 1100

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://cmgds.marine.usgs.gov/data-releases/media/2020/10.5066-P9V7K7EG/5e44efb226004094aa512ee17f6851e2/SQUID5_Florida_PointClouds.zip

Network_Resource_Name:

https://cmgds.marine.usgs.gov/data-releases/datarelease/10.5066-P9V7K7EG/dataset/6/

Network_Resource_Name: https://doi.org/10.5066/P9V7K7EG

Access_Instructions:

Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data. The second link points to a landing page with data, metadata, and a browse graphic. The third link points to the landing page for the entire data release.

Fees: None.

Technical_Prerequisites: These data can be viewed with point cloud editing software.

Metadata_Reference_Information:

Metadata_Date: 20210317
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9V7K7EG/SQUID5_Florida_PointClouds.html>