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- Discrete wavelet transforms（DWT） and wavepacket have been applied in many fields.But due to the use of orthonormal basis decompositions，there are several problems. 离散小波变换与小波包分解已经广泛地应用于各个领域，但是由于它们一般是采用一组正交镜像滤波器来实现变换，所以相应地会产生一些问题。
- Abstract： Discrete wavelet transforms（DWT） and wavepacket have been applied in many fields.But due to the use of orthonormal basis decompositions，there are several problems. 摘 要： 离散小波变换与小波包分解已经广泛地应用于各个领域，但是由于它们一般是采用一组正交镜像滤波器来实现变换，所以相应地会产生一些问题。
- The experiments show that the proposed method outperforms the methods based on the Laplacian pyramid and discrete wavelet transform. 实验对比结果表明，该方法明显优于拉普拉斯金字塔融合算法和离散小波变换融合算法。
- However, it performs a little worse compared to the conventional Discrete Wavelet Transform(DWT) for lossy compression. 而在有损压缩方面,其效果通常稍逊于传统的离散小波变换(DWT)。
- A content-based watermarking model based on discrete wavelet transform (DWT) is presented. 摘要提出一种小波域基于图像内容的局部化自适应数字水印算法。
- Traditional discrete wavelet transform, which is sensitive to the position of the signal, is not shiftable. 普通的离散小波变换对信号的起始位置非常敏感,不具有平移不变性。
- A kind of method of two-level signature verification based on discrete wavelet transform(DWT) was introduced. 介绍了一种利用离散小波变换提取特征的二级签名认证方法。
- Recently,image compression algorithms based on Discrete Wavelet Transform（DWT） emerge in plenty. 摘要 近来,基于小波变换的各种压缩算法大量出现。
- A novel digital watermarking scheme based on the kinoform and discrete wavelet transform (DWT) is proposed. 提出一种基于相息图和小波变换的数字水印方案。
- Abstract： The discrete wavelet transform (DWT) has been applied to signal processing systems. 摘 要： 离散小波变换已广泛应用于信号处理中。
- The work concerns with the watermarking algorithm that embed image data invisibly into a color image based on Discrete Wavelet Transform (DWT). 本文提出了一种基于离散小波变换 ( DWT)的彩色图像数字水印算法 .
- For the multidirectional images, Dual-Tree Complex Wavelet Transform (DTCWT) was employed instead of the traditional Discrete Wavelet Transform (DWT). 对于多方向性的图像，使用双树复小波变换取代传统的离散小波变换。
- An algorithm based on discrete wavelet transform(DWT) and wavelet packet decomposition(WPD) for speech enhancement was presented. 提出了一种基于离散小波变换(DWT)和小波包分解(WPD)的语音增强算法。
- The article discusses a kind of image-based adaptive visible digital watermarking treatment technology in discrete wavelet transform (DWT). 摘要主要研究在小波变换域中，基于图像特征的自适应可见数字水印嵌入处理技术。
- The paper presents a new binary watermark method based on Run Length Encoding（RLE） and Discrete Wavelet Transform（DWT）. 摘要 提出了一种二值水印嵌入方案。
- In the detecting step, the moving objects are segmented with the third level DWT (discrete wavelet transform) and background difference. 在检测部分，采用第三级离散小波变换和背景差分进行了目标分割。
- K.C.B.Tan,Arslan.Low power embedded extension algorithm for lifting-based discrete wavelet transform in JPEG2000[J].C.Electronics letters,2001,37(25). 黄思齐，杨鲁平，刘桥.;一种适合JPEG2000的5/3离散小波变换硬件系统结构[J]
- An efficient face recognition system is designed by using Discrete Wavelet Transform(DWT),Principal Component Analysis(PCA) and WMMC. 并设计了一个基于离散小波分解、主成分分析和加权最大类间边缘准则的人脸识别系统。
- For this problem, this paper takes the place of JPEG2000 wavelet transforms with Shape-Adaptive Discrete Wavelet Transforms. The method largely improves the image quality of ROI boundary. 针对这个缺点,本文应用形状自适应离散小波变换(SA-DWT)代替JPEG2000所用的小波变换,使得感兴趣区域的边缘图像质量有了较大的提高。
- It can reduce the amount of computation by exploiting the decimation and keep the advantage of quasi-othogonal transform with the discrete wavelet transform(DWT). 该方案可以利用小波变换的抽取特性,降低自适应迭代的次数且保持小波准正交变换的优点。
