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Dense surface reconstruction for enhanced navigation in MIS

Totz, J; Mountney, P; Stoyanov, D; Yang, GZ; (2011) Dense surface reconstruction for enhanced navigation in MIS. In: (pp. pp. 89-96).

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Recent introduction of dynamic view expansion has led to the development of computer vision methods for minimally invasive surgery to artificially expand the intra-operative field-of-view of the laparoscope. This provides improved awareness of the surrounding anatomical structures and minimises the effect of disorientation during surgical navigation. It permits the augmentation of live laparoscope images with information from previously captured views. Current approaches, however, can only represent the tissue geometry as planar surfaces or sparse 3D models, thus introducing noticeable visual artefacts in the final rendering results. This paper proposes a high-fidelity tissue geometry mapping by combining a sparse SLAM map with semi-dense surface reconstruction. The method is validated on phantom data with known ground truth, as well as in-vivo data captured during a robotic assisted MIS procedure. The derived results have shown that the method is able to effectively increase the coverage of the expanded surgical view without compromising mapping accuracy. © 2011 Springer-Verlag.

Type: Proceedings paper
Title: Dense surface reconstruction for enhanced navigation in MIS
ISBN-13: 9783642236228
DOI: 10.1007/978-3-642-23623-5_12
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
URI: http://discovery.ucl.ac.uk/id/eprint/1366446
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