Wei Shengbin, Wang Shaoqing, Zhou Changhe, Liu Kun, Fan Xin
Appl Opt. 2015 Apr 10;54(11):3246-51. doi: 10.1364/AO.54.003246.
In this paper, we propose a novel three-dimensional (3D) profilometry using a binocular camera and a 64 × 64 Dammann grating for generation of a regular square laser array. A new constraint called a "ray constraint," taking advantage of the splitting characteristic of Dammann grating, is proposed for binocular matching. Binocular matching is realized by using ray constraint and precalibration of a laser array. Point clouds without outliers are obtained with binocular matching results according to triangulation. The experimental apparatus weighs less than 170 g with a width of less than 14 cm. We used this apparatus to scan a statue of Apollo under indoor illumination (at 450 lux). Its 3D model with complex profile was reconstructed by more than 150,000 points. This 3D profilometry has advantages of low cost, low power, and small size and should be useful for practical applications.
在本文中，我们提出了一种新颖的三维（3D）轮廓测量方法，该方法使用双目相机和一个64×64的达曼光栅来生成规则的方形激光阵列。利用达曼光栅的分光特性，提出了一种名为“光线约束”的新约束条件用于双目匹配。通过使用光线约束和激光阵列的预校准来实现双目匹配。根据三角测量法，利用双目匹配结果获得无异常值的点云。该实验装置重量小于170克，宽度小于14厘米。我们使用该装置在室内照明（450勒克斯）下扫描了一尊阿波罗雕像。通过超过150,000个点重建了其具有复杂轮廓的3D模型。这种3D轮廓测量方法具有低成本、低功耗和小尺寸的优点，在实际应用中应该会很有用。
