Gonzalo C, Bescós J, Berriel-Valdós L R, Artal P
Appl Opt. 1990 Jun 10;29(17):2569-75. doi: 10.1364/AO.29.002569.
An optical digital processor based on the Wigner distribution function (WDF) has been implemented, permitting space variant filtering of 2-D real images. The processor sequentially generates all space samples of the distribution; thus, each sample can be modified by a different filter. The filtered Wigner distribution function is optically inverted, and a digital image processor selects the information associated with each sample of the image. Compared to a digital implementation, the required computer time has been reduced to the point where future practical use of Wigner filtering can be expected.
一种基于维格纳分布函数（WDF）的光学数字处理器已经实现，它可以对二维实图像进行空间可变滤波。该处理器按顺序生成分布的所有空间样本；因此，每个样本可以用不同的滤波器进行修改。对滤波后的维格纳分布函数进行光学逆变换，然后由数字图像处理器选择与图像每个样本相关的信息。与数字实现相比，所需的计算机时间已减少到有望在未来实际应用维格纳滤波的程度。
