Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Greinert Jens jgreinert@geomar.de 0000-0001-6186-8573 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 2023 Analysis-ready optical underwater images collected along OFOS profile SO268/2_117-1 during SONNE cruise SO268/2, Clarion-Clipperton Zone (Pacific Ocean) dataset https://doi.org/10.1594/PANGAEA.957266 2023-04-05T11:04:42 https://doi.org/10.1594/PANGAEA.957274 This dataset comprises a sequence of analysis-ready seafloor optical images of the Clarion-Clipperton Zone (CCZ) in the Pacific Ocean. These images have been pre-processed and are directly usable by the marine imaging community. The raw images were acquired along 12 OFOS (camera) deployment tracks, during SONNE expeditions SO268/1 and SO268/2 to the Mn-nodule covered deep seabed areas of the CCZ in the Pacific Ocean; the raw images have been published here https://doi.org/10.1594/PANGAEA.935856. We subjected these raw images through a series of transformations aimed at correcting for the degradation in visual quality that is typical of underwater images of the deep sea. In particular, the transformations we applied to the raw images include: correction for illumination drop-off radially from the image center towards the edges; contrast enhancements though contrast limited adaptive histogram equalization; color normalization to correct for uneven scene brightness among individual images; and finally, standardization of the varying spatial footprint size due to the inability of the imaging platform (OFOS) to maintain a consistent altitude above the seafloor. Therefore, the provided images are ready to be used in seafloor substrate classification studies. Purser Autun autun.purser@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/autun-purser.html 0000-0001-5427-0151 Bodur Yasemin V yasemin.bodur@uit.no 0000-0001-8758-8617 Ramalo Sofia sofia.pinto.ramalho@gmail.com Stratmann Tanja tanja.stratmann@nioz.nl 0000-0001-7997-1157 Schoening Timm tschoening@geomar.de 0000-0002-0035-3282 2021 Seafloor images of undisturbed and disturbed polymetallic nodule province seafloor collected along OFOS profile SO268/2_117-1 RV SONNE SO268/2 cruise dataset https://doi.org/10.1594/PANGAEA.935895 -117.0507359 -116.984906 11.8573219 11.8734253 -117.02007924861262 11.864765605852515 2019-04-10T05:02:52 2019-04-10T13:33:17 -4122.2 -4122.2 not specified JPIO-MiningImpact JPI Oceans - Ecological Aspects of Deep-Sea Mining https://miningimpact.geomar.de GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Helmholtz Association of German Research Centres HGF https://www.helmholtz.de https://doi.org/10.13039/501100001656 HIDSS-0005 Helmholtz School for Marine Data Science (MarData) https://www.mardata.de/ SO268/2_117-1 OFOS-06 11.85735 -117.0507167 -4122.2 2019-04-10T04:58:36 Clarion-Clipperton Fraction Zone, North East Pacific Ocean SO268/2 https://doi.org/10.3289/GEOMAR_REP_NS_59_20 Haeckel, Matthias 2019-03-30 2019-05-27 Manzanillo, Mexico Vancouver, Canada 20190057 https://www.ldf.uni-hamburg.de/sonne/wochenberichte/wochenberichte-sonne/so267-2-268-3/expeditionsheft-so-267-2-268-3.pdf https://maps.geomar.de/mapgen_ds/maps/legMap?lang=en&render=true&leg=SO268/2 Sonne_2 https://uol.de/icbm/forschungsplattformen-schiffe/sonne DBBE 9633927 Ocean Floor Observation System OFOS GER Dredge; Position USBL; Start Transect 20692 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Image number/name Image no/name Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 Image no/name DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 Longitude Depth, bathymetric Bathy depth m depth http://purl.obolibrary.org/obo/PATO_0001595 Length L http://dbpedia.org/resource/Length Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 Bathy depth [m] Area/locality Area Area http://dbpedia.org/resource/Area Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 license area Area Classification Classification Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 seafloor Classification Score Score Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 classification Score Scale Scale arbitrary units Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 [centimeters per pixel] Scale [arbitrary units] Image IMAGE Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 IMAGE Image (File Size) IMAGE (Size) Bytes Mbani Benson bmbani@geomar.de 0000-0002-2348-6782 IMAGE (Size) [Bytes] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Clarion Clipperton Fracture Zone OFOS optical camera Seafloor images Underwater images geomar author26515 author56252 author61689 author63637 author66680 author83871 author98703 award1467 basis5064 campaign46192 curlevel30 event2913253 funder20477 geocode1599 geocode1600 geocode1601 geocode8128 inst20147 license21 method11386 param122805 param150836 param15373 param163487 param2268 param31574 param83159 pi98703 project4206 refds935895 term1073131 term242 term28162 term43770 term43863 term43975 term49772 term50399 term52475 term72297 term72298 topotype1