نتایج جستجو برای: noisy image

تعداد نتایج: 404860  

2017
Jin-Jin Mei Yiqiu Dong Ting-Zhu Huang

Image fusion and denoising are significant in image processing because of the availability of multi-sensor and the presence of the noise. The first-order and second-order gradient information have been effectively applied to deal with fusing the noiseless source images. In this paper, due to the advantage of the fraction-order derivative, we first integrate the fractionalorder gradients of nois...

1998
Steven S. O. Choy Yuk-Hee Chan Wan-Chi Siu

Image noise ltering has been widely perceived as an estimation problem in the spatial domain. In this paper, we deal with it as an estimation problem in an uncorrelated transform domain. This idea leads to a generalization of the adaptive LMMSE estimator for ltering noisy images. In our proposed method, the transform-domain local statistics obtained from the noisy image are exploited. Due to th...

2002
Cabir Vural William A. Sethares

In linear image restoration, the point spread function of the degrading system is assumed known even though this information is usually not available in real applications. As a result, both blur identification and image restoration must be performed from the observed noisy blurred image. This paper presents a computationally simple linear adaptive finite impulse response filter for blind image ...

Journal: :J. Sci. Comput. 2016
Rick Archibald Anne Gelb Rodrigo B. Platte

Fourier samples are collected in a variety of applications including magnetic resonance imaging (MRI) and synthetic aperture radar (SAR). The data are typically under-sampled and noisy. In recent years, l regularization has received considerable attention in designing image reconstruction algorithms from undersampled and noisy Fourier data. The underlying image is assumed to have some sparsity ...

2015
Hassan K Najjar

this project describes the steps to process a Bayer raw sensor output image which is noisy, undersampled, and blurred. The final output is a de-noised, de-blurred, and upsampled version of the input image. Some of the in-between steps include lens shading correction, color balancing, demosaicing, color correction, etc. Keywords—raw image ; deblurring ; denoising ; image deconvolution ;

2012
D. Gnanadurai V. Sadasivam

This frame work describes a computationally more efficient and adaptive threshold estimation method for image denoising in the wavelet domain based on Generalized Gaussian Distribution (GGD) modeling of subband coefficients. In this proposed method, the choice of the threshold estimation is carried out by analysing the statistical parameters of the wavelet subband coefficients like standard dev...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2019

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