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Journal ArticleDOI

A comprehensive review of denoising techniques for abdominal CT images

TLDR
This study aims to compare the capabilities of several notable and contemporary denoising techniques in the presence of different types of noise present in abdominal CT images to determine the most suitableDenoising technique for practitioners and researchers that can be used in real life scenarios.
Abstract
Computed Tomography (CT) is one of the effective imaging modality in medical sciences that assist in diagnosing various pathologies inside the human body. Despite considerable advancement in acquisition speed, signal to noise ratio and image resolution of computed tomography imaging technology, CT images are still affected by noise and artifacts. A tradeoff between the amount of noise reduced and conservation of genuine image details has to be made in such a way that it enhances the clinically relevant image content. Therefore, noise reduction in medical images is an important and challenging task, as it helps to improve the performance of other image processing procedures such as segmentation or classification to perform better diagnosis by clinicians. Different techniques have been suggested in the literature on denoising of CT images, and each technique has its own presumptions, benefits, and drawbacks. To the best of our knowledge, no survey paper was found in the literature that compares the performance of various denoising techniques for CT images. This study aims to compare the capabilities of several notable and contemporary denoising techniques in the presence of different types of noise present in abdominal CT images. This comparative analysis helps to determine the most suitable denoising technique for practitioners and researchers that can be used in real life scenarios. Furthermore, the advantages and disadvantages of considered denoising methods have also been discussed along with some recommendations for further research in this area.

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Citations
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Journal ArticleDOI

Automated detection of Glaucoma using deep learning convolution network (G-net)

TL;DR: An Artificially Intelligent glaucoma expert system based on segmentation of optic disc and optic cup based on Convolution neural networks working in conjunction to segment optic cup and disc is presented.
Book ChapterDOI

Machine Learning: A Review of the Algorithms and Its Applications

TL;DR: The algorithms of machine learning, its principles and highlighting the advantages and disadvantages in this field are introduced and the advancements that have been carried out are focused on so that the current researchers can be benefitted out of it.
Journal ArticleDOI

Recurrent generative adversarial network for learning imbalanced medical image semantic segmentation

TL;DR: A new recurrent generative adversarial architecture named RNN-GAN is proposed to mitigate imbalance data problem in medical image semantic segmentation where the number of pixels belongs to the desired object are significantly lower than those belonging to the background.
Journal ArticleDOI

A review on Deep Learning approaches for low-dose Computed Tomography restoration

TL;DR: In this paper, the role of DL techniques in low-dose CT (LDCT) restoration is discussed and the applications of DL-based approaches for LDCT restoration are reviewed.
Journal ArticleDOI

A hybrid edge-based technique for segmentation of renal lesions in CT images

TL;DR: A hybrid segmentation technique based on two methods which include spatial intuitionistic fuzzy c-means clustering (SIFCM) that integrates spatial image details and, distance regularized level-sets method for extraction of renal lesions correctly and proficiently in computed tomography (CT) images is suggested.
References
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Journal ArticleDOI

Image quality assessment: from error visibility to structural similarity

TL;DR: In this article, a structural similarity index is proposed for image quality assessment based on the degradation of structural information, which can be applied to both subjective ratings and objective methods on a database of images compressed with JPEG and JPEG2000.
Journal ArticleDOI

Nonlinear total variation based noise removal algorithms

TL;DR: In this article, a constrained optimization type of numerical algorithm for removing noise from images is presented, where the total variation of the image is minimized subject to constraints involving the statistics of the noise.
Journal ArticleDOI

Scale-space and edge detection using anisotropic diffusion

TL;DR: A new definition of scale-space is suggested, and a class of algorithms used to realize a diffusion process is introduced, chosen to vary spatially in such a way as to encourage intra Region smoothing rather than interregion smoothing.
Proceedings ArticleDOI

Bilateral filtering for gray and color images

TL;DR: In contrast with filters that operate on the three bands of a color image separately, a bilateral filter can enforce the perceptual metric underlying the CIE-Lab color space, and smooth colors and preserve edges in a way that is tuned to human perception.
Journal ArticleDOI

Image Denoising by Sparse 3-D Transform-Domain Collaborative Filtering

TL;DR: An algorithm based on an enhanced sparse representation in transform domain based on a specially developed collaborative Wiener filtering achieves state-of-the-art denoising performance in terms of both peak signal-to-noise ratio and subjective visual quality.
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