基于高光谱成像技术的皮肤应变-反射率相关性研究  

Study on skin strain reflectance correlation based on hyperspectral imaging technology

作　　者：刘旭亮 韦慧心 王志勇[1] 李传崴[1] 李林安[1] 马剑雄[2] 王征[3] 王世斌[1] LIU Xuliang;WEI Huixin;WANG Zhiyong;LI Chuanwei;LI Linan;MA Jianxiong;WANG Zheng;WANG Shibin(Department of Mechanics,School of Mechanical Engineering,Tianjin University,Tianjin 300054,China;Institute of Orthopedics,Tianjin Hospital,Tianjin 300211,China;Faculty of Intelligence and Computing,Tianjin University,Tianjin 300054,China)

机构地区：[1]天津大学机械工程学院力学系,天津300054 [2]天津医院骨科研究所,天津300211 [3]天津大学智能与计算学部,天津300054

出　　处：《实验力学》2022年第3期297-304,共8页Journal of Experimental Mechanics

基　　金：国家自然科学基金(11972248)资助。

摘　　要：高光谱成像(HSI)将传统成像技术和光谱技术相结合,在成像的同时还可以获得研究对象的空间及光谱信息,将其应用于皮肤能够实现皮肤癌、烧伤皮肤的检测以及表情识别等。实际上,活体状态下人体皮肤常常处于变形状态,但其变形对光谱反射率影响的研究非常匮乏。因此,本文基于高光谱成像技术测量了不同应变状态下和不同波长下的人体皮肤图像,并获取了相应的反射率信息,根据光谱曲线特征将全波长425nm~1025nm分为几个不同波段,分别研究波长、反射率与应变的关系,发现皮肤的变形会显著影响光谱反射率,基于此建立了变形-光谱学耦合理论模型。结果表明,皮肤的反射率与拉伸比呈线性正相关,且425nm~525nm波长范围内相关性最好。Hyperspectral imaging(HSI)combines traditional imaging technology with spectral technology,which can obtain the spatial and spectral information of the research object while imagine.HIS enables the detection of skin cancer,burned skin,and expression recognition.In fact,the in vivo human skin is often in a deformed state,but the effect of its deformation on spectral reflectance is extremely poorly studied.Firstly,based on hyperspectral imaging technology,the human skin images under different strain states and different wavelengths are measured,and the corresponding reflectivity information is obtained.And then,the entire wavelengths from 425 nm to 1025 nm are divided into several different bands according to the characteristics of the spectral curve.Furthermore,the relationship between wavelength,reflectivity and strain is studied,and it is found that skin deformation can significantly affect spectral reflectivity.Based on experimental results,a deformation-spectroscopic coupling theoretical model is established.The results have shown that the reflectance of skin has a linear positive correlation with the stretch ratio,and the correlation is the best in the wavelength range of 425 nm~525 nm.

关 键 词：拉伸比 高光谱成像技术 皮肤反射率 皮肤变形 

分 类 号：O34[理学—固体力学] O433[理学—力学]