SO242-1_107-1_filelist_AUV-images.tab (7.66 MB)

Seafloor images and raw context data along AUV track SO242/1_107-1_AUV14 (Abyss_200) during SONNE cruise SO242/1

Download (7.66 MB)
dataset
posted on 23.11.2019 by Jens Greinert, Timm Schoening, Kevin Köser, Marcel Rothenbeck
The raw images (available on request) have been captured using a Canon 8-15mm fisheye lens and therefore they have a wide field of view, which results in a dark image boundary as the lights did not illuminate the outer sectors well. The images in this dataset have then been undistorted to virtual images that an ideal perspective camera with only 90 degrees horizontal field of view would have seen from the same position. To achieve this, the color of each pixel in the ideal image is obtained by - computing the ray in space associated with this virtual pixel (using rectilinear un-projection) - projecting this ray into the original fisheye image (using equidistant projection), yielding a sub-pixel position - interpolating the colors of the neighboring pixels Technically, the undistortion has been performed using the tool https://svn.geomar.de/dsm-general/trunk/src/BIAS/Tools/biasproject.cpp (at revision 418, and earlier, compatible revisions). Manual image annotation is available here: https://annotate.geomar.de/volumes/264 Target Altitude of AUV above seafloor: 4.5m, 7m

History

Year

2017

Size

493743 data points

Coverage

* Median Latitude: -7.05718620492 * Median Longitude: -88.4804513425 * South-bound Latitude: -7.077695788 * West-bound Longitude: -88.5031662 * North-bound Latitude: -7.039100444 * East-bound Longitude: -88.4569397 * Date/Time Start: 2015-08-17T23:38:59 * Date/Time End: 2015-08-18T06:58:30 * Minimum DEPTH, water: 3351.0m * Maximum DEPTH, water: 3351.0m

Event(s)

SO242/1_107-1 SO242/1_107-1_AUV 14 * Latitude Start: -7.07325 * Longitude Start: -88.46001 * Latitude End: -7.04273 * Longitude End: -88.50728 * Date/Time Start: 2015-08-17T20:53:00 * Date/Time End: 2015-08-18T10:03:00 * Elevation Start: -4149.7 * Elevation End: -4098.1 * Location: DISCOL Experimental Area (DEA) * Campaign: SO242/1 (JPI-OCEANS) * Basis: Sonne_2 * Device: Autonomous underwater vehicle (AUV) * Comment: NW of DEA

Project(s)

JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact)

Related to

Greinert, Jens (2015): RV SONNE Fahrtbericht / Cruise Report SO242-1: JPI OCEANS Ecological Aspects of Deep-Sea Mining, DISCOL Revisited, Guayaquil - Guayaquil (Equador), 28.07.-25.08.2015. GEOMAR Report (N. Ser.), 26, 290 pp, https://doi.org/10.3289/GEOMAR_REP_NS_26_2015

Comment

Target Altitude of AUV above seafloor: 4.5m, 7m

Licence

Exports

Logo branding

Keyword(s)

Licence

Exports