全息信息简化是基于波前再现的全息三维显示技术重要的课题。对全息三维显示的信息量与再现像的视差角与视场角的关系进行了分析，指出全息三维显示的巨大信息量是为了提供足够的视差和视场，以达到人眼立体视觉效果。在牺牲垂直视差并保证足够的水平视差角和视场角的条件下，利用光栅对全息图进行取样，计算了光栅取样全息图对信息压缩的极限，分析了简化后全息图再现像的特点和存在的问题，对于信息压缩后的光栅取样全息图的再现进行了设计。

The quantitative relation of hologram information capacity with parallax and field angle is computed. The result points out that there is a mass of information in order to provide adequate parallax and field angle for three-dimensional display. With enough parallax and field angle, the limit of information reduction is given, and the characteristics of reconstruction image of grating sampled hologram (GSH) is analyzed. A design for using the GSH to three-dimensional displaying is proposed. This work can be guidance for fast computing hologram and holographic video.