&lt;title&gt;Real-time holographic endoscopy&lt;/title&gt;

Smigielski, P.; Albe, F.; Dischli, Bernard

doi:10.1117/12.60195

Cited by 4 publications

(2 citation statements)

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“…For holographic endoscopy one has to ensure very short exposure, so pulse laser rather than cw are required. It will be necessary to introduce the new methods for endoscopic interferograms evaluation, specialy, when working in real time [27]. Such studies should be further performed by teams of engineers, physicists and physicians.…”

Section: Discussionmentioning

confidence: 98%

<title>Endoscopic measurements by holographic and nonholographic optical methods</title>

Podbielska

1993

SPIE Proceedings

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Endoscopy has became established as a technique for visual inspection in difficult to access environments. So far it has not exceeded beyond the observation purpose. When a threedimensional object is imaged by means of an endoscope, only a twodimensional display is possible. In modern diagnostics, however, it can be necessary to know the size and the shape ofthe object under study or to perform some deformation analysis. The methods for reconstructing the 3-D object shape from a 2D endoscopic image will be described and illustrated with some examples. They exploit holographic and non-holographic techniques for contour generation. Endoscopic deformation analyses with internal and external holographic recording will be demonstrated as well.

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Section: Discussionmentioning

confidence: 98%

<title>Endoscopic measurements by holographic and nonholographic optical methods</title>

Podbielska

1993

SPIE Proceedings

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“…Using a Q-switched ruby laser, a three-dimensional image of an internal part of the larynx of anesthetized dog was recorded, revealing details invisible in normal laryngoscopy. More about combining of holographic recording with endoscopy can be found elsewhere [10], [1 1], [12].…”

Section: State-of-art In Quantitative Endoscopymentioning

confidence: 99%

<title>Computer-aided analysis of endoscopic fringe pattern images</title>

Podbielska

Jaronski

1994

Interferometry '94: New Techniques and Analysis in Optical Measurements

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Bioscan Optimas package from Bioscan, Incorporated ofEdmonds, running under Microsoft Windows was used for acquiring and analysis of endoscopic images. The fiberoscopic endoscope was used for imaging of the tissue of the cat stomach and for imaging of the known reference plane. The illumination system of the gastroscope was substituted by the special ordered fiber bundle, allowing the projection ofthe Ronchi ruling onto the surface of the investigated objects. The intensity distribution in the image of the reference grating and deformed grating were analyzed in order to determine the shift between the two gratings for corresponding fringes. The deviation from the reference plane was calculated, thus providing a three dimensional (3-D) representation ofthe two dimensional (2-D) endoscopic images.

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