Duelli M, Reece M, Cohn R W
ElectroOptics Research Institute, University of Louisville, Kentucky 40292, USA.
J Opt Soc Am A Opt Image Sci Vis. 1999 Oct;16(10):2425-38. doi: 10.1364/josaa.16.002425.
Two pixel-oriented methods for designing Fourier transform holograms--pseudorandom encoding and minimum-distance encoding-usually produce higher-fidelity reconstructions when combined than those produced by each method individually. In previous studies minimum-distance encoding was defined as the mapping from the desired complex value to the closest value produced by the modulator. This method is compared with a new minimum-distance criterion in which the desired complex value is mapped to the closest value that can be realized by pseudorandom encoding. Simulations and experimental measurements using quantized phase and amplitude modulators show that the modified approach to blended encoding produces more faithful reconstructions than those of the previous method.
两种面向像素的傅里叶变换全息图设计方法——伪随机编码和最小距离编码——通常在结合使用时比单独使用每种方法能产生更高保真度的重建。在以往的研究中，最小距离编码被定义为从所需复数值到调制器产生的最接近值的映射。将该方法与一种新的最小距离准则进行比较，在新准则中，所需复数值被映射到可以通过伪随机编码实现的最接近值。使用量化相位和幅度调制器的模拟和实验测量表明，改进后的混合编码方法比以前的方法能产生更逼真的重建。
