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针对小波边缘检测阈值设定问题。本文提出了一种基于小波分析的改进阈值设定方法,采用一个矫正因子β来构造一个新的阈值函数,调整软硬阈值的恒定偏差。实验证明新阈值函数不但整体上连续性好而且在在克服硬阈值函数的不连续和软阈值函数在处理较大小波系数时总存在恒定偏差这两个不足的同时,又保留了软、硬阈值函数原有的优点。
Wavelet edge detection threshold setting problem. In this paper, an improved threshold setting method based on wavelet analysis is proposed, which uses a correction factor β to construct a new threshold function and adjust the constant deviation of hardware and software thresholds. Experimental results show that the new threshold function not only has good overall continuity but also retains the soft and hard thresholds while overcoming the discontinuity of the hard threshold function and the constant total deviation of the soft threshold function when dealing with larger wavelet coefficients The original advantages of the function.