title: Use of enhancement algorithm to suppress reflections in 3-D reconstructed capsule endoscopy images.
abstract: In capsule endoscopy (CE), there is research to develop hardware that enables ''real'' three-dimensional (3-D) video. However, it should not be forgotten that ''true'' 3-D requires dual video images. Inclusion of two cameras within the shell of a capsule endoscope though might be unwieldy at present. Therefore, in an attempt to approximate a 3-D reconstruction of the digestive tract surface, a software that recovers information-using gradual variation of shading-from monocular two-dimensional CE images has been proposed. Light reflections on the surface of the digestive tract are still a significant problem. Therefore, a phantom model and simulator has been constructed in an attempt to check the validity of a highlight suppression algorithm. Our results confirm that 3-D representation software performs better with simultaneous application of a highlight reduction algorithm. Furthermore, 3-D representation follows a good approximation of the real distance to the lumen surface.
authors.affiliation: Anastasios Koulaouzidis, Endoscopy Unit, Centre for Liver and Digestive Disorders, the Royal Infirmary of Edinburgh, Scotland, EH16 4SA, United Kingdom.
authors.forename: Anastasios
authors.initials: A
authors.lastname: Koulaouzidis
authors.forename: Alexandros
authors.initials: A
authors.lastname: Karargyris
keywords: Accuracy; Capsule endoscopy; Experiment; Phantom; PillCam; Software; Three-dimensional reconstruction
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