A high-resolution, three-dimensional thin endoscope for fetal surgery

Kobayashi, Etsuko; Ando, Takehiro; Yamashita, Hiromasa; Sakuma, Ichiro; Fukuyo, Tsuneo; Ando, Kenjiro; Chiba, Tadatoshi

doi:10.1007/s00464-009-0413-7

Cited by 17 publications

(10 citation statements)

References 5 publications

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“…However, these dual-camera systems proved to have disadvantages that included side effects such as dizziness, fatigue, and eye strain (5,9,76). With improvement of the 3D technology, in terms of lighting (e.g., LED lighting), magnification, and minimization of size Antonin Desmoreaux First used the term "endoscopy"; used kerosene lamp with paraffin flame and 45-degree angled mirror and weight (46), it has the greatest potential to succeed in neuroendoscopy in the future.…”

Section: D Neuroendoscopymentioning

confidence: 99%

A Journey into the Technical Evolution of Neuroendoscopy

et al. 2014

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Section: D Neuroendoscopymentioning

confidence: 99%

A Journey into the Technical Evolution of Neuroendoscopy

et al. 2014

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“…These works mainly focused on obtaining the three-dimensional shape of the subject from a compound-eye image. TOMBO endoscopes include the features of stereoscopic endoscopes [8,9] and also offer several additional advantages. A TOMBO system with optical band-pass filters attached to the lenslets can acquire multiple multispectral images concurrently [6], from which it is possible to retrieve tissue or vessel information.…”

Section: Introductionmentioning

confidence: 99%

Deep-focus compound-eye camera with polarization filters for 3D endoscopes

et al. 2012

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A deep-focus three-dimensional endoscope based on a compact compound-eye camera called TOMBO (thin observation module by bound optics) with polarization filters and polarized illuminations is presented. TOMBO is a very compact multi-camera system, which is composed of a single image sensor, a lens array, and a crosstalk barrier. Features of TOMBO are compactness of the camera system, and additional functionality achieved by attaching optical filters to lenses. In this paper, to enhance surface or deep structures of biological tissues selectively, polarization filters, which are parallel and vertical to the polarized illumination, respectively, are attached to a part of lenses. To achieve extended depth of focus, a wavefront coding (WFC) technique based on the spherical aberration is introduced. A prototype TOMBO with 3x3 lenses and a 2.2-μm-pixel color CMOS image sensor was fabricated. Depth estimation and superresolution with the WFC technique are demonstrated. Enhancement of surface or deep structures is also verified theoretically and experimentally.

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“…These works mainly focused on obtaining the three-dimensional shape of subjects from a compound-eye image. TOMBO endoscopes include the features of stereoscopic endoscopes [7,8] and also offer several additional advantages. It is well known that depth estimation with a multi-baseline stereo method, where more than two cameras are used, improves accuracy of estimation.…”

Section: Introductionmentioning

confidence: 99%

Variable field-of-view visible and near-infrared polarization compound-eye endoscope

Kagawa

Shogenji

Tanaka

et al. 2012

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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A multi-functional compound-eye endoscope enabling variable field-of-view and polarization imaging as well as extremely deep focus is presented, which is based on a compact compound-eye camera called TOMBO (thin observation module by bound optics). Fixed and movable mirrors are introduced to control the field of view. Metal-wire-grid polarizer thin film applicable to both of visible and near-infrared lights is attached to the lenses in TOMBO and light sources. Control of the field-of-view, polarization and wavelength of the illumination realizes several observation modes such as three-dimensional shape measurement, wide field-of-view, and close-up observation of the superficial tissues and structures beneath the skin.

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A high-resolution, three-dimensional thin endoscope for fetal surgery

Abstract: According to these experiments, the thin 3D endoscope has a sufficiently high image quality and depth perception even in a water environment.

Cited by 17 publications

References 5 publications

A Journey into the Technical Evolution of Neuroendoscopy

A Journey into the Technical Evolution of Neuroendoscopy

Deep-focus compound-eye camera with polarization filters for 3D endoscopes

Variable field-of-view visible and near-infrared polarization compound-eye endoscope

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