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首页> 外文期刊>Image Processing, IET >Wound model reconstruction from three-dimensional skin surface imaging using the convex hull approximation method
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Wound model reconstruction from three-dimensional skin surface imaging using the convex hull approximation method

机译：使用凸包壳近似方法从三维皮肤表面成像重建伤口模型

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摘要

Ulcer wound refers to a wound with underlying medical conditions that prevent healing. The ability to measure objectively early therapeutic response is important for wound management. Early therapeutic efficacy is best assessed by measurement of wound depth and volume. This study presents a non-invasive technique for assessing ulcer wound volume from three-dimensional (3D) surface scans. The accuracy of volume computation is dependent on the performance of the solid reconstruction of the wound. However, it is difficult to reconstruct solid models of wounds such as leg ulcers that extend over a large area along leg curvature and when irregularities exist on the skin surrounding the wound. The convex hull approximation preceded by surface division of the wound surface scan is proposed for solid reconstruction of wound models. This approach enables the reconstruction of models for large wounds without being affected by the surrounding irregularities. The performance of the algorithm is compared against reference volumes of wound models developed on AutoCAD. The best results are achieved using convex hull preceded by 20 surface divisions with volume computation error from 0 to 7%. Furthermore, moulds of wounds are developed to compute volumes using invasive and non-invasive methods, their percentage differences are below 8%.
机译：溃疡伤口是指具有阻止康复的潜在医学状况的伤口。客观测量早期治疗反应的能力对伤口处理很重要。早期治疗效果最好通过测量伤口深度和体积来评估。这项研究提出了一种从三维（3D）表面扫描评估溃疡伤口体积的非侵入性技术。体积计算的准确性取决于伤口的实体重建的性能。但是，很难重建伤口的实体模型，例如沿着腿部曲率以及在伤口周围的皮肤上存在不规则部位时在大面积上延伸的腿溃疡。针对伤口模型的实体重建，提出了在伤口表面扫描之前进行曲面划分的凸包近似。这种方法可以重建大伤口的模型，而不受周围不规则的影响。将算法的性能与在AutoCAD上开发的伤口模型的参考体积进行比较。使用凸包，然后进行20个曲面分割，体积计算误差为0至7％，可获得最佳结果。此外，伤口模型被开发为使用侵入性和非侵入性方法来计算体积，它们的百分比差异低于8％。

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