背景:皮肤水分对皮肤屏障功能的影响很大。大多数非侵入性评估技术依赖于其电特性来测量皮肤表面的水合作用,范围有限,运行不稳定。将图像处理应用于皮肤水合度评估并不常见,一般强调皮肤电容图片和近红外图像,这需要一定的频谱。因此,对大面积皮肤水合作用评估和绘图的需求日益增加。
目的:该研究旨在提出一种从可见光图像中对皮肤表面水合作用进行定量评估的算法。
方法:应用三种装置来测量皮肤水合:皮肤图像捕获装置和两种公认的商业皮肤装置。数字图像处理系统创建一个新的索引,叫做GVR,象征皮肤表面的水分。CLAHE算法用于增强皮肤图像的对比度,用单色图像计算后,对皮肤反射图像进行分割。使用个体部位和整个皮肤的值来估计GVR。使用统计分析检查三种方法之间的相关系数以评估GVR的性能。
结果:从可见光图像估计的皮肤水合作用受整个面部结构以及特定区域的影响。电和可见图像评价显示出具有显著差异的强关联。
结论:发现可见图像的反射措施提供了一种快速有效的方法来量化皮肤表面的水分。
BACKGROUND: Skin barrier function is significantly impacted by skin moisture. Most non-invasive evaluation techniques to measure skin surface hydration relying on its electrical properties, which are limited in scope and have unstable operations. Applying image processing for skin hydration assessment is uncommon, with an emphasis on skin-capacitive pictures and near-infrared images in general, which demand a certain spectrum. As a result, there is an increasing need for wide-area skin hydration evaluation and mapping.
OBJECTIVE: The study aims to propose a quantitative evaluation algorithm for skin surface hydration from visible-light images.
METHODS: Three devices were applied to measure skin hydration: skin image capture device and two recognized commercial skin devices. A digital image processing system creates a new index, called GVR, to symbolize skin surface moisture. The CLAHE algorithm was applied to enhance the contrast of skin image, and after calculating it with the monochrome image, the skin
reflectance image was segmented. The GVR was estimated using the values of the individual sites and the entire skin. The correlation coefficient between the three methods was examined using statistical analysis to assess the performance of GVR.
RESULTS: Skin hydration estimated from visible-light images is influenced by the entire facial structure in addition to specific areas. The electrical and visible image evaluations showed a strong association with a significant difference.
CONCLUSIONS: It was discovered that reflecting measures from visible images provide a quick and efficient way to quantify the moisture of the skin\'s surface.