1·Step 2, forward discrete cosine transform is carried out to sampled data;
步骤2，对取样的数 据进行正向离散余弦转换；
2·Discrete cosine transform (DCT) is an effective method to signal enhancement.
离散余弦变换是声信号增强的有效方法。
3·Inverse Discrete Cosine Transform takes the most of time in MPEG-4 video decoding.
离散余弦逆变换是MPEG - 4视频纹理解码中运算时间开销最大的部分。
4·Discrete cosine transform (DCT) is a hypo-optimal transform approach similar to KL transform.
DCT变换是一种与KL变换非常相似的次最优变换算法。
5·The motion compensated discrete cosine transform coding is an efficient video coding technique.
运动估计与补偿方法是实用的视频编码方法。
6·The digital watermark technique is proposed based on Fresnel hologram and Discrete Cosine Transform.
提出了一种基于数字菲涅耳全息和离散余弦变换的数字水印技术。
7·This paper addresses the digital image watermarking techniques based on discrete cosine transform (DCT).
本文主要研究了DCT 域的数字水印算法在静止图像中的应用问题。
8·The results indicate that the discrete cosine transform has a good compressibility to NIR spectra of tea.
结果表明，离散余弦变换对近红外光谱具有较强的压缩能力。
9·At low bit rates, the block Discrete Cosine Transform (BDCT) compression methods often give rise to blocking artifacts.
低比特率时，基于块离散余弦变换(BDCT)的图像压缩方法常常会引起块效应。
10·The discrete cosine transform (DCT) is an important mathematical tool in digital image processing and many other fields.
离散余弦变换(DCT)是数字图像处理等许多领域的重要数学工具。