The proper decomposition progression is confirmed when the energy ratio of detail subimages in two consecutive levels is less than 1.
对选出的最佳小波基,采用相邻两层的高频子带能量之比值小于1作为最佳分解级数的选择依据。
参考来源 - 织物纹理分析中小波基的选择和分解级数的确定·2,447,543篇论文数据，部分数据来源于NoteExpress
给出了基于小波的图像压缩编码的基本原理与主要几种小波图像压缩算法，讨论了图像编码中小波基选取、边界处理以及分解级数等几个问题。
The followings are studied in this thesis: principle of wavelet based image coding methods, key problems of wavelet transform in image codec and some main coding algorithms based on wavelet.
为在计算机上做傅里叶级数的分解，需要对连续信号进行抽样，然后按离散傅里叶级数进行分解。
In order to analyzing digital signals with the aid of computers, it is necessary to use Fourier Series of discrete form.
在碱性溶液中，连二亚硫酸钠的分解反应级数为1.5级。
The order of the anaerobic decomposition of the sodium dithionite in the alkaline solution is 1.5 order.
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