Open AccessJournal Article
Enhancement of images with speckle noise reduction using different filters
S Gopinathan,S Poornima +1 more
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TLDR
In this paper, a number of filters such as Lee Filter, Frost Filter, Kuan Filter, Weiner Filter, Median Filter and SRAD (Speckle Reducing Anistrophic Diffusion) Filter are applied to the following images such as Photographic, Ultrasound, SAR, PET, CT and MRI.Abstract:
An Image is often corrupted by noise in its acquisition and transmission. Noise is any undesired information that contaminates an image. Speckle or Multiplicative noise, is a signal-dependent form of noise, whose magnitude is related to the value of the original pixel. This tends to reduce the image resolution and contrast. Denoising speckle is one of the most important process to increase the quality of the image. Many filters are widely used to improve the quality of images by despeckling it. This work comprises a number of filters such as Lee Filter, Frost Filter, Kuan Filter, Weiner Filter, Median Filter and SRAD(Speckle Reducing Anistrophic Diffusion) Filter that are applied to the following images such as Photographic, Ultrasound, SAR, PET, CT and MRI. The Statistical measures such as Signal to Noise Ratio (SNR), Peak signal to noise ratio (PSNR), Structural Similarity Index (SSIM), Mean Square Error (MSE), Root Mean Square Error (RMSE) are used to calculate the filtered images and the results are tabulated. These parameters are used to analyze image quality of the filtered images. The results obtained from the statistical measures are used for comparative study and also used to determine the filter name that is well suited for a particular type of image. The results obtained are presented in the form of statistical tables and graphs. Finally the best filter has been proposed based on the statistical and experimental results.read more
Citations
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A Study on Image Enhancement Techniques using YCbCr Color Space Methods
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Proceedings ArticleDOI
Efficient Speckle Reduction Techniques in Ultrasound Video Quality Enhancement – A Comparative Evaluation
TL;DR: In the present work seven different filters are listed and experimental work is carried out on LEE and Hybrid Median filter (HMF), the experimental result of PSNR and MSE values are considered for evaluation purpose.
Proceedings ArticleDOI
Analysis of Kidney Ultrasound Images Characterization Using Statistical Moment Descriptor
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Fpga implementation of speckle noise removal in real time digital images
TL;DR: Different types of filtering techniques are introduced in this paper Edge Enhanced Modified Lee filter, Modified Kuan Filter, Fast Bilateral Filter, Adaptive Centre weighted Median Exponential filter are introduced which are tested on sample ultrasound images, Synthetic radar aperture images and magnetic resonance images and effectiveness of these filters are compared with different types of Quality metrics.
References
More filters
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
A Model for Radar Images and Its Application to Adaptive Digital Filtering of Multiplicative Noise
TL;DR: A model for the radar imaging process is derived and a method for smoothing noisy radar images is presented and it is shown that the filter can be easily implemented in the spatial domain and is computationally efficient.
Journal ArticleDOI
Speckle reducing anisotropic diffusion
Yongjian Yu,Scott T. Acton +1 more
TL;DR: This paper provides the derivation of speckle reducing anisotropic diffusion (SRAD), a diffusion method tailored to ultrasonic and radar imaging applications, and validates the new algorithm using both synthetic and real linear scan ultrasonic imagery of the carotid artery.
Journal ArticleDOI
Speckle in ultrasound B-mode scans
TL;DR: In this paper, the reduction in speckle that can be obtained with a compound scan with maximum amplitude writing is computed and the condition for the independence of two amplitude values is derived.
Journal ArticleDOI
Weighted median filters: a tutorial
TL;DR: Weighted median (WM) filters have the robustness and edge preserving capability of the classical median filter and resemble linear FIR filters in certain properties as discussed by the authors, which enables the use of the tools developed for the latter class in characterizing and analyzing the behavior and properties of WM filters.
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