Coherence-Enhancing Shock Filters
@inproceedings{Weickert2003CoherenceEnhancingSF,
title={Coherence-Enhancing Shock Filters},
author={Joachim Weickert},
booktitle={DAGM-Symposium},
year={2003}
}Shock filters are based in the idea to apply locally either a dilation or an erosion process, depending on whether the pixel belongs to the influence zone of a maximum or a minimum. They create a sharp shock between two influence zones and produce piecewise constant segmentations. In this paper we design specific shock filters for the enhancement of coherent flow-like structures. They are based on the idea to combine shock filtering with the robust orientation estimation by means of the…
138 Citations
Shock filter coupled to curvature diffusion for image denoising and sharpening
- Computer ScienceImage Vis. Comput.
- 2008
Coherence enhancing image sharpening and denoising using a novel shock filter model
- Computer Science2010 9th International Symposium on Electronics and Telecommunications
- 2010
The proposed method allows for better control and anisotropic shock filtering, via its control functions f1 and f2, and has the ability of successfully enhancing GB+AWGN images while exhibiting a coherence enhancing behavior.
Fast smoothed shock filtering
- Computer ScienceProceedings of the 21st International Conference on Pattern Recognition (ICPR2012)
- 2012
This article proposes to improve the original shock filtering scheme using smoothed local histograms and serves as an easily-controlled and fast denoising algorithm, in comparison with other shock filters in the literature.
Image enhancement using hybrid shock filters
- Computer Science2010 IEEE International Conference on Automation, Quality and Testing, Robotics (AQTR)
- 2010
The proposed method allows for better control and anisotropic, contour-driven shock filtering, via its control functions f1 and f2, and the ability of successfully enhancing GB+AWGN images while preserving a stable-convergent time behavior.
Morphological Sharpening and Denoising Using a Novel Shock Filter Model
- Computer ScienceICISP
- 2010
The proposed method allows for better control and anisotropic, contour-driven, shock filtering via its control functions f1 and f2, and preserves a stable-convergent time behavior.
Selective image smoothing and feature enhancement using modified shock filters
- EngineeringThe 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011
- 2011
Shock filters are widely used for image enhancement and deblurring. These filters make use of nonlinear hyperbolic Partial Differential Equations (PDEs) in order to sharpen the edges. However, in…
Anisotropic shock filter for enhancement and non-photorealistic generation of flow patterns
- EngineeringThe 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.
- 2004
An anisotropic shock filter is designed for edge-preserving enhancement of flow patterns in grayscale and color images and is applied to non-photorealistic enhancement of painting strokes and transforming photographs to oil-painting like images with active generation offlow patterns.
Half Gaussian Kernels Based Shock Filter for Image Deblurring and Regularization
- EngineeringVISAPP
- 2013
The proposed approach uses a half smoothing kernel to get the precise edge directions, and use different shock-diffusion strategies for different image regions to restore both blurred and noisy image.
A Shock Filter for Image Deblurring and Enhancement with Oriented Hourglass Tensor
- Engineering2019 11th International Symposium on Image and Signal Processing and Analysis (ISPA)
- 2019
The method is compared to 5 other PDE techniques, presenting its interest, robustness and reliability, as, for example, without creating a grainy effect around deblurred edges by visualizing isophote lines.
Theoretical foundations for 1-D shock filtering
- Mathematics
- 2005
While shock filters are popular morphological image enhancement methods, no well-posedness theory is available for their corresponding partial differential equations (PDE). By analysing the dynamical…
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