Hui Li, Fan Pan, Yuntao Wu, Yanduo Zhang, Xiaolin Xie
Appl Opt. 2016 Jan 1;55(1):140-7. doi: 10.1364/AO.55.000140.
In this paper, we present a novel design concept for determining the depth map of three-dimensional (3D) scenes based on an electrically controlled liquid crystal (LC) lens. The advantages of the proposed method are that it does not need any mechanical movements and a large amount of computations to acquire a depth map of a 3D scene in a relatively short amount of time. The tunable-focus LC lens doped with multi-walled carbon nanotubes is to become a key optical component for determining a depth map system. Sequenced two-dimensional images of slightly different perspectives are recorded in a short time, and the depth map of the 3D scene, according to a proposed depth estimation method and a focusing evaluation function, can be acquired in a simple way. This new method to acquire a depth map based on a doped LC lens maximizes the use of the proposed LC lens. The proposed system is novel in its compact, simple, and fast features, so we believe the proposed method can open a new creative dimension in image analysis and imaging systems and can also overcome the limitations of the conventional imaging mode.
在本文中，我们提出了一种基于电控液晶（LC）透镜确定三维（3D）场景深度图的新颖设计概念。该方法的优点在于，在相对较短的时间内获取3D场景的深度图时，它无需任何机械运动且无需大量计算。掺杂多壁碳纳米管的可调焦LC透镜将成为确定深度图系统的关键光学组件。在短时间内记录视角略有不同的一系列二维图像，根据所提出的深度估计方法和聚焦评估函数，可通过简单的方式获取3D场景的深度图。这种基于掺杂LC透镜获取深度图的新方法最大限度地利用了所提出的LC透镜。所提出的系统在紧凑、简单和快速方面具有新颖性，因此我们相信所提出的方法能够在图像分析和成像系统中开辟一个新的创新维度，并且还能克服传统成像模式的局限性。
