Camera Travel for Immersive Colonography
Soraia F. Paulo (1), Daniel Medeiros (2), Pedro Borges (1), Joaquim, Jorge (1), Daniel Sim\~oes Lopes (1) ((1) INESC-ID Lisboa, Instituto Superior, T\'ecnico, ULisboa, (2) CMIC, Victoria University of Wellington)

TL;DR
This study compares different camera navigation techniques in immersive virtual reality colonography, revealing trade-offs between lesion detection effectiveness and navigation speed, and providing guidelines for optimal technique selection.
Contribution
Introduces and evaluates a fixed camera orientation navigation method in immersive colonography, comparing it with Fly-Through and Fly-Over techniques in VR environments.
Findings
Fly-Over improves lesion detection but increases task time
Fly-Through balances speed and detection effectiveness
Fixed camera orientation performs less effectively
Abstract
Immersive Colonography allows medical professionals to navigate inside the intricate tubular geometries of subject-specific 3D colon images using Virtual Reality displays. Typically, camera travel is performed via Fly-Through or Fly-Over techniques that enable semi-automatic traveling through a constrained, well-defined path at user controlled speeds. However, Fly-Through is known to limit the visibility of lesions located behind or inside haustral folds, while Fly-Over requires splitting the entire colon visualization into two specific halves. In this paper, we study the effect of immersive Fly-Through and Fly-Over techniques on lesion detection, and introduce a camera travel technique that maintains a fixed camera orientation throughout the entire medial axis path. While these techniques have been studied in non-VR desktop environments, their performance is yet not well understood in…
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Taxonomy
TopicsVirtual Reality Applications and Impacts · Augmented Reality Applications · Digital Imaging in Medicine
