测量头发直径的光学方法

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION
Mukola Kokodii, I. Krasovskyi, S. Pogorelov, V. Timaniuk
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引用次数: 0

摘要

在处理各种医学任务时,在人体过程的数学建模中,有必要知道生物组织的物理参数。在美容和皮肤病学中,这些是头发的物理特性——直径、密度、热容量、导热性和光学参数。现有的方法可以解决这些参数的测量问题,但通常需要耗费大量的时间和资源。因此,本文的目的是开发和研究一种快速、廉价的光学方法来测量人类头发的直径,并利用计算机方法对实验结果进行处理。人们研究了几种测量人类头发直径的方法。通过分析激光散射规律,利用带数码附件的显微镜和目镜测微计测量毛径。用衍射法测量的结果在误差范围内是一致的。使用PAINT程序测量的精度(平均误差为0.7 μm)略高于使用MATHCAD程序(平均误差为1.3 μm)。使用MATHCAD程序进行测量比较复杂。因此,在剩下的两种方法中,首选第一种方法。使用显微镜进行测量需要更多的手工工作;特别是焦距调整,由于镜头的放大倍率很大(20 - 40倍),这是一项耗时的操作。测量误差(1 μm)与衍射法的误差相当。因此,在所考虑的四种方法中,与已安装在计算机上的付费MATHCAD程序相比,使用Microsoft Windows系统所有版本中包含的PAINT程序处理结果的衍射法具有最大的优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optical methods of measuring the hair diameter
When dealing with various tasks of medicine, in mathematical modelling of processes in the human body, it is necessary to know the physical parameters of biological tissues. In cosmetology and dermatology, these are the physical properties of hair − diameter, density, heat capacity, thermal conductivity, and optical parameters. Existing methods can solve the problem of measuring these parameters, but as a rule, they take a great deal of time and resources. Therefore, the purpose of this paper is to develop and study fast and cheap optical methods for measuring the diameter of a human hair using computer methods for processing the results of the experiment. Several methods for measuring the diameter of a human hair have been studied. The hair diameter was measured by analysing the pattern of laser scattering and using a microscope with a digital attachment and an eyepiece micrometer. Measurements by diffraction methods are consistent with each other within the limits of errors. Measurements using PAINT program are a little more accurate (the average error is 0.7 μm) than using MATHCAD program (the average error is 1.3 μm). Measurements using MATHCAD program are more complicated. Therefore, of the two remaining methods, the first one is preferable. Measurements using a microscope require more manual work; especially focus adjustment, which, with a large magnification of the lens (20x – 40x), is a time-consuming operation. The measurement error (1 μm) is comparable with the error of diffraction methods. Thus, of the four methods considered, the diffraction method with the processing results using PAINT program, which is included with all versions of Microsoft Windows system, has the greatest advantages, in contrast to the paid MATHCAD program, which has be installed on a computer.
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来源期刊
Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
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