Samsung Electronics Co., Ltd.

Sang-Joon Han

Gil-Won Yoon

In-duk Hwang

Kye-jin Jeon

An apparatus for and a method of analyzing components using microscopic regions. The apparatus includes: an image obtainer obtaining an image of a part of a living body; a color information generator generating color information of an image having a matrix pattern from a size of the microscopic regions and the obtained image; a first data transformer transforming the color information of the image into a product of first and second matrixes; and a component analyzer analyzing components of the obtained image using at least one of the first and second matrixes. When the obtained image is divided into a plurality of microscopic regions, the size of the microscopic regions is determined so that concentrations of components of the part fluctuate in each of the microscopic regions.

Apparatus and method for analyzing component using microscopic regions

In a method of determining a regression model, and a method of predicting a component concentration of a test mixture using the regression model, the method of determining the regression model includes selecting a regression model, generating a plurality of observation points, each one of the plurality of observation points having a prediction target value and a measured value, determining a weight of the prediction target value and the measured value at each one of the plurality of observation points, and obtaining a calculation amount by reflecting the weights in differences between predicted values acquired by applying the measured values to the regression model and the prediction target values, and determining coefficients of the regression model to minimize the calculation amount.

Method of determining a weighted regression model and method of predicting a component concentration of mixture using the weighted regression model

In a method of estimating a component concentration of a mixture, and an apparatus for performing the method, the method includes generating a global calibration model with respect to a calibration data set using a concentration value determined by a plurality of independent variables including a predetermined specific component, a concentration of which is intended to be estimated, as a dependent variable, dividing the calibration data set into at least two small groups according to a value of the dependent variable and generating local calibration models for each of the at least two small groups using the calibration data set included in the divided at least two small groups, and determining a small group to which a spectrum of the mixture belongs and estimating a concentration of the specific component using a local calibration model of the determined small group.

Method and apparatus for estimating component concentration of a mixture

In an apparatus and method of noninvasively measuring a concentration of a blood component, the method includes (a) varying a thickness of a body part of a subject, measuring absorption spectrums at different thicknesses of the body part, obtaining a first differential absorption spectrum between the absorption spectrums measured at different thicknesses, actually measuring concentrations of the blood component, and establishing a statistical model using the first differential absorption spectrum and the actually measured concentrations; and (b) estimating the concentration of the blood component using a second differential absorption spectrum obtained with respect to the body part based on the statistical model.

Method and apparatus for noninvasively measuring a concentration of a blood component

A method of measuring a concentration of a component in a subject includes setting an intensity relationship equation between a positive-order beam and a negative-order beam with respect to a reference matter at a particular wavelength, applying a light having a first wavelength band absorbed by the component and detecting an intensity of a positive-order beam output from the subject and an intensity of a negative-order beam output from the reference matter, the positive-order beam and the negative-order beam having a second wavelength band, calculating an intensity of a positive-order beam input to the subject by applying the intensity of the negative-order beam output from the reference matter to the intensity relationship equation, and calculating absorbance using the intensity of the positive-order beam output from the subject and the intensity of the positive-order beam input to the subject and measuring a concentration of the component using the absorbance.

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Seoul, South Korea

Sang-Joon Han