Holographic data reduction.
Holographic data reduction.
复制标题
全息数据缩减。
DOI：
10.1364/ao.7.001185
复制
发表时间：
1968
期刊：
影响因子：
1.9
通讯作者：
D. Brumm
中科院分区：
文献类型：
--
作者：
K. Haines;D. Brumm
对于诸如电视之类的系统，需要非常大的带宽来传输全息数据。这篇论文介绍了一种技术，在这种技术中，通常需要的大带宽被用来换取图像中更高的噪声或更低的分辨率。从物体辐射的光被中间色散介质衍射并聚集在全息图光圈处。这张全息图的正确照明提供了一束图像光束，该光束穿过中间介质，在物体最初占据的空间中聚焦。通过适当地选择色散介质，可以使全息图孔径变得非常小，从而表示大的数据量减少。保持图像的三维和原始视角。文中给出了实验结果，显示了数据减少多达3600次后的重建图像。
Very large bandwidths are required for the transmission of holographic data for systems such as TV. This paper presents a technique in which the large bandwidths normally required are traded off for either increased noise or decreased resolution in the image. The light radiated from the object is diffracted by an intermediate dispersion medium and collected at the hologram aperture. Correct illumination of this hologram provides an image beam that passes back through the intermediate medium and comes to focus in the space originally occupied by the object. By proper selection of the dispersion medium, the hologram aperture can be made extremely small, thus representing a large data reduction. The three dimensionality of the image and the original viewing angles are maintained. Included in the paper are experimental results that show reconstructed images after a data reduction of as much as 3600.