节点文献
二维EMD的纹理分析及图像瞬时频率估计
Bidimensional EMD for Texture Analysis and Estimation of the Instantaneous Frequencies of an Image
【摘要】 将一维经验模式分解(EMD)方法和Hilbert-Huang变换(HHT)直接应用于二维图像处理中,提出了一种新的二维EMD算法,将提取出图像的多尺度空间频率信息分别用HHT和直接法来估计多分量图像AM-FM形式的瞬时频率.最后用文中算法分别对合成图像和自然图像进行了实验.
【Abstract】 A new algorithm based on bi-dimensional empirical mode decomposition (BEMD) is developed to extract features of texture at multiple-scale spatial frequencies. Hilbert-Huang transform (HHT) and direct method are applied to estimate the instantaneous frequencies of the multi-component AM-FM image respectively. All algorithms are demonstrated in the experiment with either synthetic or natural images.
【关键词】 二维EMD;
纹理分析;
Hilbert-Huang变换;
自适应;
AM-FM表示;
直接法;
【Key words】 BEMD; texture analysis; Hilbert-Huang transform (HHT); adaptive; AM-FM representation; direct method;
【Key words】 BEMD; texture analysis; Hilbert-Huang transform (HHT); adaptive; AM-FM representation; direct method;
【基金】 国家自然科学基金(60272042,10171007)
- 【文献出处】 计算机辅助设计与图形学学报 ,Journal of Computer Aided Design & Computer Graphics , 编辑部邮箱 ,2005年10期
- 【分类号】TP391.41;
- 【被引频次】87
- 【下载频次】842