Logarithmic Transformation to Joint Power Spectrum can enhance the intensity of high frequency component, improve the modulation degree, weigh down the zero-order diffraction, and increase the recognition efficiency of joint transform correlation system.
为增强联合功率谱的高频成分,改善其调制程度,可对功率谱进行对数变换,从而有效保留更多的高频成份,压低零级衍射光斑,提高联合变换相关器的识别能力。
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