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- W2588948183 abstract "Polarization measurements give orthogonal information to spectral images making them a great tool in thecharacterization of environmental parameters in nature. Thus, polarization imagery has proven to be remarkably usefulin a vast range of biomedical applications. One such application is the early diagnosis of flat cancerous lesions in murinecolorectal tumor models, where polarization data complements NIR fluorescence analysis. Advances in nanotechnologyhave led to compact and precise bio-inspired imaging sensors capable of accurately co-registering multidimensionalspectral and polarization information. As more applications emerge for these imagers, the optics used in theseinstruments get very complex and can potentially compromise the original polarization state of the incident light. Herewe present a complete optical and polarization characterization of three rigid endoscopes of size 1.9mm x 10cm (KarlStorz, Germany), 5mm x 30cm, and 10mm x 33cm (Olympus, Germany), used in colonoscopy for the prevention ofcolitis-associated cancer. Characterization results show that the telescope optics act as retarders and effectivelydepolarize the linear component. These incorrect readings can cause false-positives or false-negatives leading to animproper diagnosis. In this paper, we offer a polarization calibration scheme for these endoscopes based on Muellercalculus. By modeling the optical properties from training data as real-valued Mueller matrices, we are able tosuccessfully reconstruct the initial polarization state acquired by the imaging system." @default.
- W2588948183 created "2017-02-24" @default.
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- W2588948183 date "2017-02-15" @default.
- W2588948183 modified "2023-09-23" @default.
- W2588948183 title "Optical characterization and polarization calibration for rigid endoscopes" @default.
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- W2588948183 doi "https://doi.org/10.1117/12.2252969" @default.
- W2588948183 hasPublicationYear "2017" @default.
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