到目前为止,解决立体电视的途径共有两种,立体电视法和全息电视法。这两种方法的基点是获得实景的信息,只是方式完全不同。立体电视法要求为观察者双眼提供实景的两个平面投影(立体象对)的信息。全息电视法是获得场景全息图形式信息(该信息是全息摄影材料致黑密度的分布)。立体电视法在构成立体图象时没有把目标的远近不同的光点衍射的球面光波在观察者视平面上具有不同波前曲率考虑进去。因此,立体电视法的图象存在着一系列不良效应。当变动观察点时,目标会发生畸变和失真.当必须使眼睛调节到固定距离(立体象对平面)时,又限制了重现场景的最大深度。全息电视原则上能重现目标在观察者视平面上形成的准确波前。但这种方法还存在 So far, there are two ways to solve stereoscopic television, the stereoscopic television method and the holographic television method. The basic point of these two approaches is to get the real information, but the way is completely different. The stereoscopic television method requires the information of two plane projections (stereopair) to provide the observer’s eyes with a real picture. Holographic television method is to obtain the scene hologram information (the information is holographic material black density distribution). The stereoscopic television method does not take into account that the spherical light waves diffracted by different light spots of the target in the stereoscopic image have different wavefront curvatures in the viewing plane. Therefore, the stereoscopic television image has a series of adverse effects. Distortion and distortion of the target occur when the observation point is changed, and when the eye must be adjusted to a fixed distance (stereopair plane), the maximum depth of scene reproduction is limited. In principle, holographic television can reproduce the exact wavefront of the target’s apparent plane of sight. But this method still exists