Autostereoscopic display is a kind of three-dimensional technique which need not wear 3D goggles or other equipments. It can be classified into four groups: holography display techniques

integral photography display techniques

volumetric display techniques and horizontal parallax-based autostereoscopic display techniques. In these years

volumetric display techniques and horizontal parallax-based autostereoscopic display techniques develop rapidly. In this paper

we first overview developments in two kinds of volumetric display techniques

which are static volumetric display technique and volumetric display technique based on swept screen

during recent years. Then

make a survey of horizontal parallax-based autostereoscopic display on two ways

the optical sheets used and the multiplex methods. Last

summarize the advantages and disadvantages of volumetric display and autostereoscopic display based on parallax.