目的 设计基于结构光的手部三维扫描系统，并评估其应用于手部三维重建模型的准确性。 方法 通过自制结构光三维扫描系统扫描5名志愿者左手，将掌侧和背侧的三维图像拼接、封装、填充、表面光顺，后对生成的手部三维模型进行手指长度、关节周径和宽度的测量，并将测量结果与直接测量法得到的结果进行比较。 结果 自制结构光三维扫描系统扫描速度快（时间均为1 s），且三维手模型的外形逼真、皮纹细腻；在28项测量指标中，除示、中指背侧长度和示指远指间关节周径的差值有统计学差异（但两种测量方法所得差值均小于2.0 mm），其它测量指标的差值均在1.0 mm以内，无统计学差异。 结论 自制结构光三维扫描系统能快速进行手部软组织模型重建，且所重建的三维模型具有较好的准确性。
Abstract
Objective To develop a 3D hand scanning system based on structural light and to evaluate the validity of hand morphological modes. Methods By scanning the left hand of 5 volunteers with the self-designed 3D scanning system of structural light, the 3D images on the volar side and the dorsal side were spliced, encapsulated, filled and smoothed. Then the fingers’ length, joint circumference and width of 3D models of the hand were measured, and the measured results were compared with those obtained by the direct measurement method. Results The scanning time of 3D scanning system for structural light was 1 second, and the shape of the 3D hand models was realistic and the skin texture was fine. Among of the 28 measurement indexes, the difference between the dorsal length of the index and long fingers and the DIP joint circumference of the index finger were statistically significant (but all were less than 2.0 mm), and the difference between other measurement indexes was not statistically significant (all were within 1.0 mm). Conclusions The self-made 3D scanning system of structural light can reconstruct the soft tissue models of the hand quickly, and the 3D hand morphological models have high validity.
关键词
结构光扫描 /
手部模型 /
直接测量 /
准确性
Key words
Structural light scanner /
Hand model /
Direct measurement /
Validity
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