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Study on speckle noise filter in the ESPI image based on curvelet transform
Author(s): 
Pages: 1045-1048
Year: Issue:  9
Journal: Laser & Infrared

Keyword:  ESPI散斑噪声Curvelet变换条纹图滤波;
Abstract: 重点研究了Curvelet变换的去噪原理及方法,并结合ESPI条纹图中散斑乘性噪声的特性,提出了改进的Curvelet变换去噪方法,即在去噪之前,先将图像进行对数变换,使得乘性噪声变成加性噪声,然后再进行Curvelet变换去噪,这样会更有利于噪声与边缘信息的分离.并把该方法应用在对轮胎的激光无损检测图像处理系统中,实验结果表明该方法在有效去除散斑噪声的同时,较好地保持了条纹图的边缘细节信息.
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