将输入图像置于这种全息透镜的前面或后面，均能得到物体的傅里叶变换功率谱。
The Fourier transform power spectrum of input object can be obtained when the input image is placed at the front or back of the hololens.
将这种滤波器放置在傅里叶反变换产生相关输出之前的联合功率谱面上，该技术可以应用在具有不同灰度图像的模式识别中。
The filter is put on the power spectrum before applying the inverse Fourier transform to yield the correlation output. This technique can be used in pattern recognition of grey level input image.
提出一种新的图像识别方法，直接利用输入图像和参考图像的联合变换相关功率谱进行双功率谱干涉，不需要特殊的光学元件，也不需要对功率谱进行调制和改造。
It realized the straight double-JPS interference of the JPS of input identifying image and reference one, and didn't need special optical components and improving the JPS variedly either.
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