并通过计算机模拟，确定出该最佳阈值位于联合变换功率谱的平均灰度值附近。
That is, there exists an optimal threshold, which lies in the average gray of the joint transform power spectrum by computer simulation.
像元结构对输入图像的抽样使联合变换功率谱和相关输出是空间周期性重复的。
The present method is achieved with an amplitude gray-scale spatial light modulator (SLM) as the image input device and based on double exposure holographic phase-shifting interferometry.
分析了微分滤波对联合变换功率谱的影响，得到了一种称之为功率谱形式的微分滤波器。
In this paper, the effect of differential filter on joint power spectrum has been analyzed and so-called power spectrum differential filter is introduced.
提出一种使用功率谱相减的实时联合变换相关器作多目标检测。
Multitarget detection using a real time joint transform correlator with power spectrum subtraction is proposed.
利用高对比度液晶光阀（LCLV）对联合功率谱进行非线性处理，实现了实时非线性联合变换相关。
Utilizing a high contrast liquid crystal light valve (LCLV) to perform joint power spectrum nonlinear processing, real time nonlinear joint transform correlation is implemented.
这种相关器与一般的二元联合变换相关器的差别在于联合功率谱作二元处理之前先进行高通滤波。
The difference between the proposed correlator and BJTC is that joint power spectrum is processed by using high pass filtering before applying binarization.
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.
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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