Improved methods for surface imaging of the damaged human tissues based on colorimetry and fuzzy evaluation of color types are presented. Based on the color segmentation of images of superficial damage of human soft tissues, the original image is divided into zones of different colors in accordance with the reference colors used. Further, on the basis of calculated relative zones of different colors for a large set of experimental data on surface damage of biological tissues with a known time of occurrence of prescription, a fuzzy knowledge base is formed, what allows to classify damages and establish their time of occurrence. A bruise color is formalized by a fuzzy set defined on a discrete universal set of colors, where the degree of belonging of a fuzzy set corresponds to the degree of manifestation of each color in the coloring. The degree of coloration in a fuzzy set is determined on the basis of expert-experimental data on the percentage of the area of each color in the coloration. The relationship “time of occurrence of a bruise - coloring” is given in the form of fuzzy rules IF-THEN, which associate fuzzy estimates of time with fuzzy sets of color types. The time range is divided by the expert into intervals of the minimum duration, during which a change in the bruise color is recorded. The decision on the time of occurrence of a bruise is made on the basis of the degree of closeness of the observed and tabular fuzzy color sets.
Mathematical modeling of the spectral characteristics of the coefficient of diffuse reflection of a layer of an aqueous medium with phytoplankton particles with a change in the pigment parameters is carried out. The functions of the probability density of errors occurring in the measuring channel of the multispectral environmental control are investigated. The dependence of the errors of the first and second kind and the reliability of the control of the pigment parameters of the phytoplankton on the threshold value of the diffuse reflection coefficient for a separate spectral channel of the monitoring instrument are analyzed. In particular, when using four channels with wavelengths of 530 nm, 590 nm, 620 nm and 730 nm in the multispectral environmental monitoring tool, the value of the reliability of the control of the ratio between chlorophyll a and total chlorophyll 0.939 is obtained, and when three channels with wavelengths of 450 nm are used, 470 nm and 660 nm, the reliability of the control of the ratio between carotenoids and total chlorophyll 0.972 was obtained. The working wavelengths and the number of channels of the multispectral environmental control are determined by the spectral characteristics of the phytoplankton pigments (chlorophylls and carotenoids), as well as the spectral characteristics of the radiation source and the photomatrix of the monitoring instrument.
On the basis of the indicatrix of scattering of the particles were calculated spectral characteristics of anisotropy factor for spherical particles with different diameters. The mathematical model of a single layer of a suspension of particles of an inhomogeneous biological medium connects its biophysical and structural parameters and the spectral characteristics of coefficient of diffuse reflection or directional transmission. After conducting multispectral measurements, biophysical and structural parameters are required to be measured indirectly using the regression equation system.
Melanoma skin is difficult to diagnose in the early stages of development despite its location outside. Melanoma is difficult to visually differentiate from benign melanocytic nevi. In the work we investigated parameters of human intact skin in near-infrared range for different racial and gender groups. This allows to analyze statistical differences in the coefficient of diffuse reflection and use them in the differential diagnosis of cancer by optical methods subject.
Improved methods for multispectral measuring television monitoring of the ecological state of water bodies on the characteristics of macrophytes groups to assess complex human impact on their environment. Integral assessment of water pollution is based on research products of higher aquatic plants and their communities by optical methods.
The paper presents improvement of the method of environmental monitoring of water bodies based on bioindication by phytoplankton, which identify phytoplankton particles carried out on the basis of comparison array multispectral images using Bayesian classifier of solving function based on Mahalanobis distance. It allows to evaluate objectively complex anthropogenic and technological impacts on aquatic ecosystems.
Change of color coordinates of normal and pathological biological tissues is based on calculated spectral diffuse reflection. The proposed color coordinates of normal and pathological biological tissues of skin provided using standard light sources, allowing accurately diagnose skin damage due to mechanical trauma with a blunt object for forensic problems.
The method and a diagnostic tool based on a digital colorimetry and multispectral images of biological tissues are improved and developed. The method consists of measuring the color coordinates in the biological tissue, or XYZ coordinates in n-dimensional multispectral space in a diffuse light from the standard light source.
The structure and principle of operation of information-measuring system of diagnostics of normal and pathological
biological tissues from the spectrum of diffuse reflection. Research of spectrum of diffuse reflection of patients with
melanoma and comparison of characteristics of normal skin relatively healthy recipient. The measurement results can be
used by an expert system based on fuzzy logic for decision support physician about diagnosis and correction methods of treatment.
Given structure of spectral-polarimetric system controls the concentration of phytoplankton in the photobioreactor
wastewater treatment for controlling the work of photobioreactor and increase the productivity of biomass.
In paper the basic stages of intelligent techniques application for processing the optical information in medical systems of diagnostic decisions making support are considered. The features of intelligent techniques application are illustrated on an example of system of decision making support in instant nontrauma death occurrence time determination construction.
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