| 苏飞,郝芸,卢晋.基于二维DFT域全相位滤波的图像多分辨率分析[J].光电子激光,2019,30(9):1003~1010 |
| 基于二维DFT域全相位滤波的图像多分辨率分析 |
| Multiresolution analysis of image based on 2D all-phase filtering in DFT domain |
| 投稿时间：2019-01-28 |
| DOI： |
| 中文关键词: 多分辨率分析 全相位 短时傅里叶 谱分解 基窗 |
| 英文关键词:MRA all-phase STFT spectrum decomposition base window |
| 基金项目:大学生创新创业计划基金资助项目 (天津理工大学 电气电子工程学院 天津 300384) |
|
| 摘要点击次数: 740 |
| 全文下载次数: 0 |
| 中文摘要: |
| 图像多分辨率分析在信号滤波、图像除噪、图像 融合、图像边缘检测领域中应用广泛。该文设计了一种新的 图像多分辨率分析方法,通过对全相位系统函数进行谱分解,实现了基于全相位的严格功率 互补的高低通滤波器设计, 按照全相位处理的基本理论,选择不同的正交变换方式和基窗函数可以方便地设计出具有不 同分析/合成效果的全相位波 包。实验表明,DFT域全相位分析滤波器可以实现对图像的多层分解,由合成滤波器还原得 到的图像误差几乎为零。在 图像数据压缩、自适应除噪方面具有较为广泛的应用前景。 |
| 英文摘要: |
| Multiresolution analysis method in images is widely applied in signal filtering,image de-noising,fusion and edge detecting.This paper presents a novel way to implement multiresolution ana lysis.Absolute power comlementary high-pass and low-pass filters are designed by decompose the spectrum of the t ransmisson characteristic of all-phase system.In term of all-phase theory,all-phase wave packets with various analy sis and synthesis results can be easily derived by using different orthogonal transformation and base window.Finally a simulation test is given to verify that all-phase analysis filter in DFT domain can be used in multi-layer resolution of image and error from the recovered image by means of all-phase systhesis is as low as -40dB and more.This novel method will be more widely applied in the filed of image compression and adaptive de-nosing etc. |
| 查看全文 下载PDF阅读器 |
| 关闭 |