Diffuse Reflections in Simple Polygons [PDF]
Electronic Notes in Discrete Mathematics, 2013 Abstract We prove a conjecture of Aanjaneya, Bishnu, and Pal that the maximum number of diffuse reflections needed for a point light source to illuminate the interior of a simple polygon with n walls is ⌊ n / 2 ⌋ − 1 . Light reflecting diffusely leaves a surface in all directions, rather than at an identical angle as with specular ...
Gill Barequet +6 more
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Artificial neural networks based estimation of optical parameters by diffuse reflectance imaging under in vitro conditions [PDF]
Journal of Innovative Optical Health Sciences, 2017 Optical parameters (properties) of tissue-mimicking phantoms are determined through noninvasive optical imaging. Objective of this study is to decompose obtained diffuse reflectance into these optical properties such as absorption and scattering ...
Mahmut Ozan Gökkan, Mehmet Engin
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BMC Gastroenterology, 2009 Background The purpose of the study is to determine the optical properties and their differences for normal human stomach mucosa/submucosa tissue in the cardiac orifice in vitro at 635, 730, 808, 890 and 980 nm wavelengths of laser.
Wu Guo +5 more
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ASSESSMENT OF BOTTOM-OF-ATMOSPHERE REFLECTANCE IN LIDAR DATA AS REFERENCE FOR HYPERSPECTRAL IMAGERY [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 While airborne lidar has confirmed its leading role in delivering high-resolution 3D topographic information during the last decade, its radiometric potential has not yet been fully exploited.
A. Roncat, N. Pfeifer, C. Briese
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Illumination invariance and shadow compensation via spectro-polarimetry technique [PDF]
, 2013 A major problem for obtaining target reflectance via hyperspectral imaging systems is the presence of illumination and shadow effects. These factors are common artefacts, especially when dealing with a hyperspectral imaging system that has sensors in the
Jackman, James +6 more
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Effect of the Fuels Glycine, Urea and Citric Acid on Synthesis of the Ceramic Pigment ZnCr2O4 by Solution Combustion [PDF]
Materials Research, 2015 In this study, ceramic nanopigment ZnCr2O4was prepared by solution combustion using glycine, urea and citric acid as fuels. The objective is to study the influence of fuel on the morphology and the diffuse reflectance spectrum.
Edgar Andrés Chavarriaga Miranda +2 more
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Towards Non-Contact Glucose Sensing in Aqueous Turbid Medium at ∼1.1 Meters Distance
IEEE Photonics Journal, 2020 This work demonstrates a non-contact diffuse reflectance approach with a working distance of ∼1.1 meters for the potential of glucose sensing.
Daqing Piao +3 more
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Analysing the suitability of radiometrically calibrated full-waveform lidar data for delineating Alpine rock glaciers [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 With full-waveform (FWF) lidar systems becoming increasingly available from different commercial manufacturers, the possibility for extracting physical parameters of the scanned surfaces in an area-wide sense, as addendum to their geometric ...
A. Roncat +7 more
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Polarized Light Field Imaging for Single-Shot Reflectance Separation
Sensors, 2018 We present a novel computational photography technique for single-shot separation of diffuse/specular reflectance, as well as novel angular domain separation of layered reflectance.
Jaewon Kim, Abhijeet Ghosh
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