A new method for image reconstruction from a series of digital holograms obtained by stepped phase shift with random values of phase shifts is under consideration. It is shown that images reconstructed from a digital hologram in a Fresnel region at a distance matching a distance from the object to the hologram consist of two parts, one of which is a clear image of the object and the other one being formed by incorrect phase shifts consists of a set of defocused images of the object. At the same time, the quality of the reconstructed image is slightly reduced. This effect eliminates the necessity to use precision systems for setting the phase shift and significantly reduces requirements for stabilizing the optical device.

中文翻译：

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通过指定随机相移获得的数字全息图的图像重建

正在考虑从一系列数字全息图重建图像的新方法，这些数字全息图是通过具有随机相移值的步进相移获得的。结果表明，在菲涅耳区域中，物体与全息图距离匹配的数字全息图重建的图像由两部分组成，其中一部分是物体的清晰图像，另一部分是由不正确的相位形成的。 shifts 由一组物体的散焦图像组成。同时，重建图像的质量略有下降。这种效果消除了使用精密系统来设置相移的必要性，并显着降低了稳定光学设备的要求。