IMAGERY HEADERS
The images acquired with the camera were geotagged and processed to add additional information required by the USGS to the exchangeable image file format (EXIF) and other imagery headers using Phil Harvey's ExifTool. The images were given EXIF header information in the directory with all the photos by assigning all the tags in a text file to each photo using ExifTool. Adding headers also required a .csv file containing tags of the image name, GPSDateTime, GPSLatitude, and GPSLongitude. The following describes the dictionary object in the text file with each entry in the dictionary being a tag-value pair: tags = {'Copyright': 'Public Domain', 'CopyrightNotice': 'Public Domain - please credit U.S. Geological Survey', 'Artist': 'USGS SPCMSC', 'Make': 'TELEDYNE FLIR', 'Model': 'BFS-PGE-122S6C-C', 'GPSMapDatum': 'EPSG:6318 NAD83 (2011)', 'GPSLatitudeRef': 'N', 'GPSLongitudeRef': 'W', 'Credit': 'U.S. Geological Survey', 'Contact': 'gs-g-spcmsc_data_inquiries@usgs.gov', 'UsageTerms': "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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty", 'AttributionURL': '
https://doi.org/10.5066/P9KACPGU', 'XMP-photoshop:Credit': 'U.S. Geological Survey', 'iptcCore:CreatorWorkEmail': 'gs-g-spcmsc_data_inquiries@usgs.gov', 'Rights': 'Public Domain', 'ImageDescription': '
https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-310-FA; Photograph of seabed collected at Coconut Island and Ft. Hase, Marine Corps Base Hawaii, collected in May 2023 during field activity 2023-310-FA ', 'Description': '
https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-310-FA; Photograph of seabed collected at Coconut Island and Ft. Hase, Marine Corps Base Hawaii, collected in May 2023 during field activity 2023-310-FA', 'Comment': 'Photograph of seabed collected at Coconut Island and Ft. Hase, Marine Corps Base Hawaii, collected in May 2023 during field activity 2023-310-FA', 'Keywords': 'coral reef, Remote Sensing, Boca Chica Key, Florida', 'ExternalMetadataLink': '
https://www1.usgs.gov/pir/api/identifiers/USGS:b96df884-69fc-4d99-b0b7-3800a2672f1f '}. All of the previously listed tags were the same for each image. Additionally, there were tags added to the dictionary object that would have a different value for each image depending on factors such as the image location and date and time when the image was captured. These tags and an example value are included as follows, as well as a description for why the values differ, as needed: 'GPSLatitude': '21.4410', 'GPSLongitude': '-157.7270', 'DateTimeOriginal': 2023:05:09 16:32:10;
Tags were added to each image by using the command: 'exiftool -@ text_file_dictionary.txt -csv=images_date_location.csv *.jpg'.
To read out the imagery header information to a comma-separated values (CSV) file the command is: 'exiftool -csv *.jpg > allheaders.csv'. Specific tags may be specified with this command, if preferred.
