BM3D-GT&AD: an improved BM3D denoising algorithm based on Gaussian threshold and angular distance

doi:10.1049/iet-ipr.2019.0469

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	BM3D-GT&AD: an improved BM3D denoising algorithm based on Gaussian threshold and angular distance
	Q. P. Feng, S. P. Tao, C. Xu and G. Jin
刊名	Iet Image Processing
	2020
卷号	14 期号:3 页码:431-441
ISSN号	1751-9659
DOI	10.1049/iet-ipr.2019.0469
英文摘要	Block-matching and three-dimensional filtering (BM3D) is generally considered as a milestone for its outstanding performance in the area of image denoising. However, it still suffers from the loss of image detail due to the utilisation of hard thresholding on transform domain during the phase of the basic estimate. In the frequency domain, a large amount of image detail information is in high frequency, which tends to be mixed with noise. Since its low amplitude is below the threshold, some image detail is filtered out with the noise. To retain more details, this study proposes an improved BM3D. It adopts an adaptable threshold with the core of Gaussian function during hard thresholding, which can filter out more noise while retaining more high-frequency information. When grouping, the normalised angular distance is taken as a measure of similarity to relieve the interference of noise further and achieve a higher peak signal-to-noise ratio (PSNR). The experimental results show that under the background of Gaussian noise with standard deviation of 20-60, the PSNR of denoised images (with a large amount of detail), applied with the authors' improved algorithm, can be improved by $0.1 - 0.4 \, {\rm dB}$0.1-0.4dB compared with original BM3D.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64335]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. P. Feng, S. P. Tao, C. Xu and G. Jin. BM3D-GT&AD: an improved BM3D denoising algorithm based on Gaussian threshold and angular distance[J]. Iet Image Processing,2020,14(3):431-441.
APA	Q. P. Feng, S. P. Tao, C. Xu and G. Jin.(2020).BM3D-GT&AD: an improved BM3D denoising algorithm based on Gaussian threshold and angular distance.Iet Image Processing,14(3),431-441.
MLA	Q. P. Feng, S. P. Tao, C. Xu and G. Jin."BM3D-GT&AD: an improved BM3D denoising algorithm based on Gaussian threshold and angular distance".Iet Image Processing 14.3(2020):431-441.