2003
DOI: 10.1364/ol.28.000114
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Surface-reflection elimination in polarization imaging of superficial tissue

Abstract: A major drawback in polarization gating of light backscattered from tissue is that surface reflections dominate the image. An optically flat plate and matching fluid applied to the tissue surface, combined with off-axis detection, were previously used to address this problem. This approach is often inappropriate or inconvenient for practical use and more importantly can affect the tissue's optical properties. A method is demonstrated that combines images obtained with linearly and circularly polarized light to… Show more

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Cited by 96 publications
(86 citation statements)
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“…So far, most of the relevant studies have focused on using polarization gating to reject surface glare for probing deep tissue [2][3][4], or to selectively detect photons from superficial layers [5]. On the other hand, using polarization responses as contrast mechanisms has not been well studied in the context of imaging.…”
Section: Introductionmentioning
confidence: 99%
“…So far, most of the relevant studies have focused on using polarization gating to reject surface glare for probing deep tissue [2][3][4], or to selectively detect photons from superficial layers [5]. On the other hand, using polarization responses as contrast mechanisms has not been well studied in the context of imaging.…”
Section: Introductionmentioning
confidence: 99%
“…This method works well for flat objects but in the case of spherical samples like citrus fruit most of the surface is curved and hence not perpendicular to the camera, thus causing glares at particular angles between the surface and the camera. For these cases, it is recommendable to use very diffuse light or polarising filters (Morgan and Stockford, 2003). However, in some exceptional cases a particular reflection of the light is needed such as, for instance, to measure the texture or roughness of the surface, which was investigated by Jafary et al (2014) as indirect estimation of the thickness of the peel.…”
Section: Principles Of Electronic Sortersmentioning
confidence: 99%
“…Based on the gained insight into depolarization properties of multiply scattered light in tissue simulating phantoms and in actual tissues, several research groups have explored polarization gating for imaging of tissue and its underlying structures [49][50][51][52]. Various polarization gating schemes and imaging strategies have been investigated for this purpose.…”
Section: Polarized Light Imaging Of Tissuementioning
confidence: 99%
“…Morgan and Stockford [51] developed an elegant polarization scheme for eliminating surface reflection in backscattering imaging of superficial tissue layers. They have used a combination of images acquired using linearly and circularly polarized light to filter out simultaneously the surface reflections and the multiply scattered photons (from deeper tissue layer) and to extract the weakly scattered photons from superficial tissue layer.…”
Section: Polarized Light Imaging Of Tissuementioning
confidence: 99%
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