@inproceedings{8955c4a006cc41e7a340dd524f67f77f,
title = "Terahertz digital holography image denoising using stationary wavelet transform",
abstract = "Terahertz (THz) holography is a frontier technology in terahertz imaging field. However, reconstructed images of holograms are inherently affected by speckle noise, on account of the coherent nature of light scattering. Stationary wavelet transform (SWT) is an effective tool in speckle noise removal. In this paper, two algorithms for despeckling SAR images are implemented to THz images based on SWT, which are threshold estimation and smoothing operation respectively. Denoised images are then quantitatively assessed by speckle index. Experimental results show that the stationary wavelet transform has superior denoising performance and image detail preservation to discrete wavelet transform. In terms of the threshold estimation, high levels of decomposing are needed for better denoising result. The smoothing operation combined with stationary wavelet transform manifests the optimal denoising effect at single decomposition level, with 5×5 average filtering.",
keywords = "digital holography, stationary wavelet transform, terahertz imaging",
author = "Cui, \{Shan Shan\} and Qi Li and Guanghao Chen",
note = "Publisher Copyright: {\textcopyright} SPIE. Downloading of the abstract is permitted for personal use only 2015.; Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014 ; Conference date: 19-10-2014 Through 24-10-2014",
year = "2015",
doi = "10.1117/12.2182877",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Dianyuan Fan and Weimin Bao and Jialing Le and Yueguang Lv and Jianquan Yao and Xiangwan Du and Lijun Wang",
booktitle = "Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014",
address = "美国",
}