计算机工程与科学2012，Vol.34Issue(11)：120-123,4.DOI:10.3969/j.issn.1007-130X.2012.11.021
一种改进的脉冲噪声滤波方法
An Improved Image Filtering Algorithm for Impulse Noise
摘要
Abstract
Digital images are often corrupted by impulse noise during the acquisition or transmission. In order to improve the image quality, it is necessary to remove impulse noise. Aiming at the shortcoming of traditional median filter and the other median-based nonlinear filters in de-noising image, an improved de-noising algorithm is proposed in this paper. Impulse noise checking is made before filtering so as to confirm the pixels polluted by noise, which are recorded and marked. Then, according to the nose detection results, an improved median filtering is adopted to remove the impulse noise. This proposed algorithm only handle the pixels polluted by noise. It not only make use of the standard median, but also use the last value before the standard median and the first value after the standard median. Experiments proves that the improved method can not only provide better performance of suppressing impulse noise than other median-based nonlinear filters, but also preserve more detail features.关键词
图像去噪/脉冲噪声/噪声检测/自适应阈值/中值滤波Key words
image denoising/impulse noise/noise detection/adaptive threshold/median filtering分类
信息技术与安全科学引用本文复制引用
刘西成,许海英,谌贵辉..一种改进的脉冲噪声滤波方法[J].计算机工程与科学,2012,34(11):120-123,4.基金项目
西南石油大学校级科技基金资助项目(XJZ2010200,XJZ2010199) （XJZ2010200,XJZ2010199）
四川省高校重点实验室测控技术与自动化科技基金资助项目(SZS2010014) （SZS2010014）
