The core of decompression is wavelet kernel using by ADV611, that is, two-dimensional bi-orthogonal wavelet transform.
解压缩的核心是ADV611所用的小波核，即二维正交小波变换。
参考来源 - 基于小波算法的视频软解压播放系统的研究方案Orthogonal wavelet transform is also an efficient image merging method. Its special characteristics about localizing the time-frequency can distill information form signals and analyze the image by flexing and moving.
正交小波变换也是目前流行的一种有效的镶嵌(拼接)方法,它特有的时频局部化功能有效地从信号中提取信息,并通过伸缩和平移等运算功能对图像进行多尺度细化分析。
参考来源 - 基于小波变换的图像镶嵌算法·2,447,543篇论文数据，部分数据来源于NoteExpress
Orthogonal wavelet transform (OWT) matrix is constructed and the residual correlation property of OWT is analyzed under the stationary and nonstationary models.
构造了正交小波变换矩阵，分析了平稳模型和非平稳模型下正交小波变换的残余相关特性。
We do orthogonal wavelet transform of a face image, get its four sub images of different frequency bands, then respectively extract their singular value features.
对人脸图象作正交小波变换，得到它在不同频带上的四个子图象，然后分别提取奇异值特征。
The experiment results show the de-noising effect of proposed method is better than those of the orthogonal wavelet transform and the common biorthogonal wavelet transform.
实验证明该方法的去噪效果明显优于正交小波方法和普通双正交小波变换的去噪效果。
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