Metadata: 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: 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: 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:f3667a52-5638-4492-8721-a5aa0e30ca2a 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: 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. Lineage: Source_Information: Source_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 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: 20211030 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