神马作文网英语翻译The idea of thresholding,then,is to set to zero all coef
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英语翻译
The idea of thresholding,then,is to set to zero all coefficients that are less than a particular threshold.These coefficients are used in an inverse wavelet transformation to reconstruct the data set.The technique is a significant step forward in handling noisy data because the denoising is carried out without smoothing out the sharp structures.The result is cleaned-up signal that still shows important details.
The idea of thresholding,then,is to set to zero all coefficients that are less than a particular threshold.These coefficients are used in an inverse wavelet transformation to reconstruct the data set.The technique is a significant step forward in handling noisy data because the denoising is carried out without smoothing out the sharp structures.The result is cleaned-up signal that still shows important details.
阈值方法的思想是把所有小于一个阈值的系数都置0,这些系数用在重建数据集合的逆小波变换中.该方法是处理噪声数据的一个巨大进步,因为去噪不需要把尖锐的数据进行平滑处理.结果就是经过处理的信号仍然具有重要的细节.
注：由于没有上下文,这里的sharp可能有不同的理解,我用了“尖锐的”,意思是那些忽高忽低的陡峭变化,有时候也可以理解为“清晰的”,意思是那些不同类型的数据轮廓边界很清楚的数据集合.denoising去噪一个常用方法是平均值滤波,会导致这些尖锐的地方被抹平,清晰的地方被模糊.这段话就是说明小波变换及其逆变换的好处在于不会在去噪的时候抛弃这些细节信息.
注：由于没有上下文,这里的sharp可能有不同的理解,我用了“尖锐的”,意思是那些忽高忽低的陡峭变化,有时候也可以理解为“清晰的”,意思是那些不同类型的数据轮廓边界很清楚的数据集合.denoising去噪一个常用方法是平均值滤波,会导致这些尖锐的地方被抹平,清晰的地方被模糊.这段话就是说明小波变换及其逆变换的好处在于不会在去噪的时候抛弃这些细节信息.
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