discrete cosine transform
离散余弦变换：一种用于信号和图像处理的数学变换
常用释义
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基本释义
- 离散余弦变换：一种用于信号和图像处理的数学变换，将连续的余弦函数转换为离散的数值序列。
例句
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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；
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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。
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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。
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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。
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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。
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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。
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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。
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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。
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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。
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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。