Seafloor images and raw context data along AUV track SO242/1_33-1_AUV04 (Abyss_190) during SONNE cruise SO242/1

DOI

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 pixelsTechnically, 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/258

Target Altitude of AUV above seafloor: 6m, 8m, 10m, 7m

Identifier
DOI https://doi.org/10.1594/PANGAEA.881844
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.882349
Related Identifier References https://doi.org/10.3289/GEOMAR_REP_NS_26_2015
Related Identifier IsVariantFormOf https://www.pangaea.de/helpers/Benthos.php?B=SO&C=SO242&S=SO242-1_33-1&ID=881844
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.881844
Provenance
Creator Greinert, Jens ORCID logo; Schoening, Timm ORCID logo; Köser, Kevin; Rothenbeck, Marcel
Publisher PANGAEA
Publication Year 2017
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 251089 data points
Discipline Acoustics; Engineering Sciences; Mechanical and industrial Engineering; Mechanics and Constructive Mechanical Engineering
Spatial Coverage (-88.475W, -7.079S, -88.444E, -7.064N); DISCOL Experimental Area
Temporal Coverage Begin 2015-08-02T20:29:39Z
Temporal Coverage End 2015-08-03T00:09:43Z