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用圆谐滤波器做相关识别具有同时满足平移和转动不变的优点,但是这种转动不变性的获得是以牺牲了一定的相关峰的信噪比为代价的。为了既保持滤波器具有平移和转动不变性又具有高的相关峰的信噪比,我们提出了用位相型圆谐滤波器做相关识别的新方法,并用
The correlation recognition with a circular harmonic filter has the advantages of both translational and rotational invariance, but this rotational invariance is obtained at the expense of the signal-to-noise ratio of a certain correlation peak. In order to keep both the translational and rotational invariance of the filter and the signal-to-noise ratio of the high correlation peak, we propose a new method of correlation identification using a phase-locked circular harmonic filter