该文根据自相关函数与谱密度函数之间的对应关系，提出了一种新的基于自相关函数的决策树归纳学习算法。

According to the relationship between auto correlation function and its spectral density, a new type of decision tree method based on signal analysis theory is proposed in this paper.

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这里是与图像处理的相关函数。

Here is the correlation function and image processing.

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上式表明： 功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。

Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.

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