关键词:

微量物证, 颜色分析, 光谱法, 机器视觉法

Abstract: Color is one of the important characteristics of trace physical evidence such as soil, fiber and paint, and color analysis is an important content in achieving accurate identification of physical evidence. However, the color analysis of physical evidence in the field of forensic science in China is still largely dependent on visual observation and subjective description, which is not conducive to the use of color as scientific evidence in the trial. By introducing the characteristics of RGB color model, Munsell color model, and Lab color model, and by summarising the factors that affect the color of soil, fiber and paint, this paper identifies the causes of colour variation in evidence. The paper then summarises the characteristics and applications of commonly used colour analysis methods such as visual inspection, spectrum method and machine vision method, and puts forward corresponding suggestions for the future work direction of color analysis, with a view to providing a reference for colleagues engaged in the study of trace physical evidence in China.

Key words:

trace material evidence, color analysis, spectroscopy, machine vision method