Diffuse reflectance spectrum as a noninvasive method has been widely used to study the optical properties of cutaneous skin tissue. In this work, we optimized an eight-layered optical model of basal cell carcinoma skin tissue to study its optical properties. Based on the model, the diffuse reflectance spectra were reconstructed in visible wavelength range by Monte Carlo methods. After different...

Predictions of chlorophyll content (chla+b) or any other canopy biophysical parameter from airborne or satellite canopy reflectance are generally carried out through four different methodologies: i) directly studying the statistical relationships between ground-measured biochemical data and canopy-measured reflectance (Johnson et al., 1994; Matson et al., 1994); ii) applying the leaf-level rela...

The atmospheric correction algorithm employed by the NASA Ocean Biology Processing Group requires an assumption of negligible water-leaving reflectance in the near-infrared region of the spectrum. For waters where this assumption is not valid, an optical model is used to estimate near-infrared water-leaving reflectance. We describe this optical model as implemented for the sixth reprocessing of...

(i) understand the magnitudes and variability of the optical properties of the ocean; (ii) predict the inherent and apparent optical properties of the ocean, including remote-sensing reflectance, given the types and concentration of suspended particles; (iii) retrieve the inherent optical properties and concentration of optically significant constituents of sea water from reflectance measurements.

An important class of optical devices consists of multiple thin layers of porous materials such as silicon. After producing samples, one often has limited optical data, for example, reflectance spectrum and under this limitation one must fit the data to specific optical models in order to obtain the complete optical functions. This process may lead to unphysical fits if supplementary knowledge ...

We present experimental results on optical properties of the rat skin controlled by administration of osmotically active chemical, such as glycerol. In vivo reflectance and in vitro reflectance and transmittance spectra of the rat skin were measured. Results of experimental study of influence of glycerol on reflectance spectra of the rat skin are presented. The significant increase of transmitt...

The information from spectral reflectance of articular cartilage has been related to the integrity of the tissue. This study explores more in detail the interrelations between the cartilage composition, structure and mechanical properties, and optical spectral reflectance. Using human osteochondral samples the reflectance spectral images of articular cartilage were captured and analyzed by usin...

BACKGROUND Accurate measurements of the optical properties of biological tissue in the ultraviolet A and short visible wavelengths are needed to achieve a quantitative understanding of novel optical diagnostic devices. Currently, there is minimal information on optical property measurement approaches that are appropriate for in vivo measurements in highly absorbing and scattering tissues. We de...

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. METHODS The measurements were performed using a CCD detector, and the optical properties were assessed from the measurements using the spatially resolved reflecta...

We present a three-dimensional optical analysis of fringing effect in small color pixels. In addition to the simulation of optical reflectance in visible spectrum, we further expressed the reflectance in spatial color. Color leakage was easily located and it agreed well with the experiments.