视差自由立体显示中视差生成元件参数的不合理设定会导致影响三维图像的莫尔条纹产生。因此，莫尔条纹消除是视差自由立体显示中的关键问题之一。本文简单介绍了3种视差自由立体显示原理。综述了视差自由立体显示中的避免莫尔条纹产生和莫尔条纹最小化2种莫尔条纹消除技术，着重介绍了莫尔条纹最小化技术，包括工程实验、莫尔条纹图像仿真、余弦光栅叠加模型近似分析和序数方程方法和傅里叶分析方法的一致性分析等技术。其中后2种技术给出了视差自由立体显示中莫尔条纹最小化的详细理论分析和解释，并为其他视差自由立体显示技术提供了设计依据。

In parallax autostereoscopic displays, the unreasonably designed device for generating parallaxes can result in moiré patterns, which influence 3D images. Thus, removing moiré patterns is a key problem in the parallax autostereoscopic displays. The paper introduces three principles for parallax autostereoscopic displays briefly. Two removing moiré patterns techniques in parallax autostereoscopic displays are demonstrated and reviewed: avoiding moiré patterns and moiré minimization. Moiré minimization technique is mainly introduced including engineering experiment, simulation of moiré patterns, approximate model of superposition of cosine gratings and technique of consistence between indicial equation method and Fourier theory. The latter two techniques provide detailed theoretical analysis and interpretation about moiré minimization in parallax autostereoscopic displays and supply design basis for other parallax autostereoscopic displays techniques.