UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Enhancement Of Stereo Imagery By Artificial Texture Projection Generated Using A Lidar

Veitch-Michaelis, J; Muller, J-P; Walton, D; Storey, J; Foster, M; Crutchley, B; (2016) Enhancement Of Stereo Imagery By Artificial Texture Projection Generated Using A Lidar. In: Halounova, L and Šafář, V and Remondino, F and Hodač, J and Pavelka, K and Shortis, M and Rinaudo, F, (eds.) XXIII ISPRS Congress: Commission V [Proceedings]. (pp. pp. 599-606). Copernicus Gesellschaft MBH Green open access

[thumbnail of isprs-archives-XLI-B5-599-2016.pdf]
Preview
Text
isprs-archives-XLI-B5-599-2016.pdf - Published Version

Download (8MB) | Preview

Abstract

Passive stereo imaging is capable of producing dense 3D data, but image matching algorithms generally perform poorly on images with large regions of homogenous texture due to ambiguous match costs. Stereo systems can be augmented with an additional light source that can project some form of unique texture onto surfaces in the scene. Methods include structured light, laser projection through diffractive optical elements, data projectors and laser speckle. Pattern projection using lasers has the advantage of producing images with a high signal to noise ratio. We have investigated the use of a scanning visible-beam LIDAR to simultaneously provide enhanced texture within the scene and to provide additional opportunities for data fusion in unmatched regions. The use of a LIDAR rather than a laser alone allows us to generate highly accurate ground truth data sets by scanning the scene at high resolution. This is necessary for evaluating different pattern projection schemes. Results from LIDAR generated random dots are presented and compared to other texture projection techniques. Finally, we investigate the use of image texture analysis to intelligently project texture where it is required while exploiting the texture available in the ambient light image.

Type: Proceedings paper
Title: Enhancement Of Stereo Imagery By Artificial Texture Projection Generated Using A Lidar
Event: XXIII ISPRS Congress, 12–19 July 2016, Prague, Czech Republic
Open access status: An open access version is available from UCL Discovery
DOI: 10.5194/isprsarchives-XLI-B5-599-2016
Publisher version: http://www.int-arch-photogramm-remote-sens-spatial...
Language: English
Additional information: Published under the Creative Common Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/)
Keywords: stereo, LIDAR, pattern projection, structured light, texture, Gotcha
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/1542497
Downloads since deposit
Loading...
138Downloads
Download activity - last month
Loading...
Download activity - last 12 months
Loading...
Downloads by country - last 12 months
Loading...

Archive Staff Only

View Item View Item