| 释义 |
dwt.
基本例句
pennyweights英钱音译本尼威特;英国金衡单位; abbr.;=pennyweight
Anatomizing the advantage and disadvantage of traditional safety printing methods and the theory and algorithm of DCT, DFT, DWT, the water marking is used firstly in safety printing field.
分析了传统印刷图文防伪方法的优缺点及 DCT、 DFT、 DWT理论与算法。将数字水印技术应用到印刷防伪领域。 cnki
Search efficiency is improved by embedding synchronous signals into time domain. Better robustness is achieved by hiding the watermarking into the low frequency coefficient of DWT domain.
同步信号嵌入时域，以提高搜索效率，水印隐藏在离散小波变换域的低频系数中，以达到较好的鲁棒性。 cnki
There are two main transform domain methods, one is to use the discrete cosine transformation DCT ; the other would be the use of discrete wavelet transforms DWT.
目前主要有两种变换域方法，一种是使用离散余弦变换 DCT，另一种是使用离散小波变换 DWT。 cnki |