Adaptive tuning piecewise cubic Hermite interpolation with Wiener filter in wavelet domain for scanning electron microscope images. Issue 4 (21st December 2018)

• Record Type: Journal Article
• Authors: Yeap, Zhi Xuan; Sim, Kok Swee; Tso, Chih Ping
• Is Part Of: Microscopy research and technique. Volume 82:Issue 4(2019)
• Page Start: 402
• Page End: 414
• Publication Date: 2018-12-21
• Subjects: noise estimation -- noise filtering -- scanning electron microscope -- signal‐to‐noise ratio; Electron microscopy -- Technique -- Periodicals; Microscopy -- Periodicals; Microscopy -- Technique -- Periodicals; 502.825
• DOI: 10.1002/jemt.23181
• Languages: English
• ISSNs: 1059-910X

Abstract

Abstract: Image processing is introduced to remove or reduce the noise and unwanted signal that deteriorate the quality of an image. Here, a single level two‐dimensional wavelet transform is applied to the image in order to obtain the wavelet transform sub‐band signal of an image. An estimation technique to predict the noise variance in an image is proposed, which is then fed into a Wiener filter to filter away the noise from the sub‐band of the image. The proposed filter is called adaptive tuning piecewise cubic Hermite interpolation with Wiener filter in the wavelet domain. The performance of this filter is compared with four existing filters: median filter, Gaussian smoothing filter, two level wavelet transform with Wiener filter and adaptive noise Wiener filter. Based on the results, the adaptive tuning piecewise cubic Hermite interpolation with Wiener filter in wavelet domain has better performance than the other four methods. Abstract : A method that applies the wavelet transform to obtain the approximate image and combine with Wiener filter to remove noise from scanning electron microscope images. This method has higher accuracy when compared with four existing methods.