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A nonlinear and non-iterative noise reduction technique for medical images: concept and methods comparison

Wilbur C.K Wong, Albert C.S Chung
2004 Excerpta Medica: International Congress Series  
We have applied this novel method to medical images and compared its denoising capability with other noise reduction techniques.  ...  In this contribution, a method for edge-preserving smoothing of 2D and 3D medical images is described.  ...  Non-linear noise reduction techniques in computed tomography (CT) imaging have been investigated in [5] .  ... 
doi:10.1016/j.ics.2004.03.143 fatcat:6iqjiwwa2bh4lmd3mco5rpc7v4

Performance Analysis for MRI denoising using Intensity Averaging Gaussian Blur Concept and Its Comparison with Wavelet Transform Method

Ami Vibhakar, Mukesh Tiwari, Jaikaran Singh
2012 International Journal of Computer Applications  
Which should be removed for feature extraction and object recognition of medical image? This noise will change the phase and amplitude of every pixel in the image.  ...  Medical image is taken by various technologies like MRI machine, computed tomography (CT), positron emission tomography (PET) etc. These techniques always add noise in image.  ...  Because of this blurring, linear filters are seldom used in practice for noise reduction; they are, however, often used as the basis for nonlinear noise reduction filters.  ... 
doi:10.5120/9359-3694 fatcat:224gxofc2jcczo4htaohqq7usq

Joint reconstruction framework of compressed sensing and nonlinear parallel imaging for dynamic cardiac magnetic resonance imaging

Zhanqi Hu, Cailei Zhao, Xia Zhao, Lingyu Kong, Jun Yang, Xiaoyan Wang, Jianxiang Liao, Yihang Zhou
2021 BMC Medical Imaging  
In this study, we proposed a novel reconstruction framework that effectively combined compressed sensing and nonlinear parallel imaging technique for dynamic cardiac imaging.  ...  In addition, we also proposed a tailored k-space down-sampling scheme that satisfies both the incoherent undersampling requirement for CS and the structured undersampling requirement for nonlinear parallel  ...  Jong Chul Ye for making the k-t FOCUSS code available online. We also would like to thank Dr. E. V. R. Dibella for providing cardiac cine datasets.  ... 
doi:10.1186/s12880-021-00685-2 pmid:34852771 pmcid:PMC8638482 fatcat:ign2sjdnzbgptabvebawy74rbe

Digital Grey Scale Image Enhancement based on Anisotropic Non-Linear Diffusion Technique

Honey Saxena, Kalyan Acharjya
2014 International Journal of Computer Applications  
Finally the paper concluded that anisotropic nonlinear diffusion technique is efficient forgrey scale image enhancement, especially for reduction of speckle noise.  ...  In this presented paper based on anisotropic non-linear diffusion technique to enhance the input noisy gray scale images, here mainly focused on speckle noise, which aremainly cause by today's modern image  ...  PERONA MALIK ANISOTROPIC NON-LINEAR DIFFUSION IMAGE ENHANCEMENT TECHNIQUE Anisotropic diffusion also called Perona Malik diffusion is a technique for reducing image noise without removing fundamental parts  ... 
doi:10.5120/16449-6059 fatcat:qqlutbfglzhqnngauqgof5frga

Front Matter: Volume 10132

2017 Medical Imaging 2017: Physics of Medical Imaging  
hand 10132 5V Performance evaluation of algebraic reconstruction technique (ART) for prototype chest digital tomosynthesis (CDT) system 10132 5W Dental non-linear image registration and collection method  ...  high temporal resolution: a proof-of-concept study with digital phantom experiment [10132-108] 10132 31 Investigation into image quality difference between total variation and nonlinear sparsifying  ...  Physics of Medical Imaging Poster Presentation Awards sponsored by Siemens Healthineers Cum Laude: Paper 10132-145, "High spatial resolution performance of pixelated scintillators," Kazuki Shigeta, Toray  ... 
doi:10.1117/12.2276763 fatcat:5vgmgqm4izfdrl6p4itkq6fsjm

Image Restoration for Long-Wavelength Imaging Systems [chapter]

Min-Cheng Pan
2012 Image Restoration - Recent Advances and Applications  
(NIR.FD_PC) and validate the instrumentation for NIR DOT imaging system.  ...  Acknowledgements In collaboration with the DASD laboratory at the Department of Mechanical Engineering of National Central University, the author wish to thank group leader and members to develop the software  ...  For a comparison purpose, non-iterative Gaussian filtering was used in the case of 1-D signal and the common Richardson-Lucy (RL) deconvolution method was implemented using a built-in MATLAB function deconvlucy  ... 
doi:10.5772/36278 fatcat:llsiyrx4gnbvzodfsolse7md3q

Digital Image Filtering Techniques- A survey

Sakshi Mahajan, Navneet Bawa
It is found that still median filtering demands some sort of enhancements as it is best for salt and pepper noise only. By conducting a survey suitable gaps are found in existing literature.  ...  This paper presents a review on digital image filtering techniques. The main emphasis is on median filtering and its extended versions like hybrid median filtering, relaxed median filtering etc.  ...  [8] introduced various hybrid filtering techniques for removal of Gaussian noise from medical images.  ... 
doi:10.24297/ijct.v10i6.7024 fatcat:viemodo7gjgh5ldioh73bhsp7m

HADOOP based image compression and amassed approach for lossless images

Ruhiat Sultana, Nisar Ahmed, Syed Abdul Sattar
2018 Biomedical Research  
By the employment of Hadoop based technique this paper proposes a novel image compression for lossless images. This method makes use of Weiner filter for the cancellation of noise and image blurring.  ...  low noise ratio when compared with existing techniques.  ...  [22] described a compression scheme named as quick fractal compression scheme in view of feature extraction and inventive method for image comparison.  ... 
doi:10.4066/biomedicalresearch.29-17-3062 fatcat:gpozf3noefgvhnowzrfzqyp6x4

A Review of Image Denoising and Segmentation Methods Based on Medical Images

Sreedhar Kollem, JNTUH University, Telangana, India and also Dept of ECE, S R Engineering College (Autonomous), Warangal, India, Katta Rama Linga Reddy, Duggirala Srinivasa Rao
2019 International Journal of Machine Learning and Computing  
Image segmentation is a widespread and active area not only for medical imaging but also for computer vision and satellite imaging.  ...  Here is an overview of the different methods after a brief introduction. These methods are classified as the basis for the techniques used.  ...  Narayanamma Institute of Technology and Science, and S R Engineering College (Autonomous).  ... 
doi:10.18178/ijmlc.2019.9.3.800 fatcat:fqsimnvapveazgpiravs3a573m

Comparative Analysis in Medical Imaging

Ashish Verma, Bharti Sharma
2010 International Journal of Computer Applications  
., visualization, segmentation may benefit from the reduction of noise. Bilateral filtering smoothes images while preserving edges, by means of a nonlinear combination of nearby image values.  ...  Filtering is always the root process in many medical image processing applications. It is aimed at reducing noise in images.  ...  In this paper, we used a non iterative scheme for edge preserving smoothing that is noniterative and simple. Earlier we have shown the relationship between bilateral filter and Gaussian filter [7] .  ... 
doi:10.5120/276-436 fatcat:pdiuzaflkjgpjm7lq5saiq4m5y

CNN approach for medical image authentication

B Madhu, Department of Computer science and Engineering, Dr. Ambedkar Institute of Technology, Outer ring road, Bengaluru, India
2021 Indian Journal of Science and Technology  
Novelty/Application: This study provides a novel method to train CNN with both watermarked , attacked images and to classify them.  ...  Objectives: To propose a Non-blind watermarking based on a Convolutional Neural Network (CNN).  ...  ., DNB, and FRCR, Consultant Radiologist at Padmashree Advanced Imaging Services, Bangalore, India, for providing CT and MRI Medical images and a logo for the implementation purpose.  ... 
doi:10.17485/ijst/v14i4.1963 fatcat:bjx5ddf34jeula462i7e53yfly

Correlation of clinical and physical-technical image quality in chest CT: a human cadaver study applied on iterative reconstruction

An De Crop, Peter Smeets, Tom Van Hoof, Merel Vergauwen, Tom Dewaele, Mathias Van Borsel, Eric Achten, Koenraad Verstraete, Katharina D'Herde, Hubert Thierens, Klaus Bacher
2015 BMC Medical Imaging  
Four radiologists assessed the clinical image quality, using a visual grading analysis (VGA) technique based on the European Quality Criteria for Chest CT.  ...  Conclusion: Our results demonstrate that noise assessments in a uniform phantom overestimate the potential dose reduction for the SAFIRE IR algorithm.  ...  No comparisons were made between the possible dose reduction based on the different parameters. Ghetti et al. [31, 32] assessed image noise in a uniform water phantom.  ... 
doi:10.1186/s12880-015-0075-y pmid:26286596 pmcid:PMC4541737 fatcat:m5mkd3ayyzbtnm2zbgvhzjrg24

X-Ray Digital Tomosynthesis Imaging: An Appropriate Reconstruction Algorithm for Arthroplasty [chapter]

Tsutomu Gomi, Hiroshi Hirano, Masahiro Nakajim
2013 Arthroplasty - Update  
Figure 1 . 1 Concept of the metal-artifact-reduction processing method for tomosynthesis.  ...  tomosynthesis [simultaneous iterative reconstruction technique; SIRT (Gordon et al 1970) ], adaptive statistical iterative reconstruction CT and non-metal-artifact-reduction processing CT (conventional  ... 
doi:10.5772/53248 fatcat:kqzdhwvqlzdntbrnh44j6chobu

Complexity Reduction and Quality Enhancement in Image Coding

Ahmad Shahin, Fadi Chakik, Safaa Al-Ali
2013 International Journal of Future Computer and Communication  
This technique is useful for intelligent devices, as well as for multimedia content-based description standards.  ...  In the decoding phase, we suggest the application of a nonlinear anisotropic diffusion, based on Perona-Malik equation, to enhance the quality of the coded image.  ...  Perona and Malik proposed a nonlinear diffusion method for avoiding the blurring and localization problems of linear diffusion filtering.  ... 
doi:10.7763/ijfcc.2013.v2.153 fatcat:5uotm4vdbjajdjzljvvg5kg74m

Review on: Image De-noising using Bilateral Filter with Multilinear Discriminant Analysis and SVM

Rohit Jaspal, Amandeep Ummat
2015 International Journal of Computer Applications  
Noise removal from magnetic resonance images is important for further processing and visional analysis. Bilateral filter is known for its effective performance in edge-preserved image denoising.  ...  Here, an iterative bilateral filter is proposed for filtering the Rician noise in the magnitude magnetic resonance images. It improves the denoising efficiency.  ...  The results obtained with this proposed method and the results achieved from other speckle noise reduction techniques have demonstrated that it is higher performance for speckle reduction.  ... 
doi:10.5120/21030-2887 fatcat:kz22udymwnf5zjeawxwdqaqrwa
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