Questions tagged [edge-preserving-filter]

Use this tag for Filters which are edge aware such as the Bilateral Filter, Guided Filter, Median filter, Anisotropic Filter, etc... Usually it is used in the context of Image Processing yet not limited to (Such as total Variation Denoising for 1D Signal, Or Non Local Means for Audio Processing).

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Understanding the Bilateral Filter - Neighbors and Sigma

I have been reading about the Bilateral Filter in - Fast Bilateral Filtering for the Display of High Dynamic- Range Images and have felt crippled and confused while understanding its working and the ...
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2answers
65 views

What Is the Bilateral Filter Category: LPF, HPF, BPF or BSF?

I`m reading about Bilateral filter with images, I knew that it uses Gaussian filter (which is a LPF) as a domain filter plus a range filter and it is used to preserve edges(high freq component). Can ...
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How to handle edge effects with EMD (HHT)?

In the application of the Huang Hilbert Transform (HHT) (or aka EMD, Empirical Mode Decomposition), there is the notable challenge of handling the edges (boundaries) of the signals; as noted in the ...
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70 views

Is the Bilateral Filter a Solution of Some Variational Method?

I've been watching these video lectures about variational methods in computer vision. In one of such video lectures a it is explained for example that the Gaussian filtering is a solution of the ...
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2answers
230 views

Decomposing an Image into High Frequency and Low Frequency Parts Using Bilateral Filter

How can we decompose any image (e.g. medical image, satellite image) into high- frequency and low-frequency parts by using a bilateral filter?
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1answer
721 views

Comparison Between Guided Filter (Edge Preserving Filter) and Gaussian Filter

I am looking for a good example that showing the different between Guided and Gaussian Filters. The example need to show the benefit of Guided filter, (for example: preserving edge...). Could you give ...
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1answer
331 views

How to Validate Bilateral Filter Implementation?

For this may be a X-Y question, I'm providing the full background story: I'm trying to test for the correctness for a fixed point implementation of bilateral filter written in C. My current approach ...
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1answer
421 views

Edge Preserving Smoothing

I'm searching for a method that can smooth a 3D volume whilst preserving the edges in my volume. I researched anisotropic diffusion filtering and bilateral filtering but I'm having trouble to evaluate ...
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2answers
6k views

Comparison of Bilateral Filter and Anisotropic Diffusion

What are the advantages / disadvantages of bilateral filter and anisotropic diffusion for noise reduction? EDIT: To be more specific - what are the practical differences in terms of quality, speed or ...
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1answer
6k views

The Difference Between Bilateral Filter and Gaussian Filter

I would like to know the basic differneces between Gaussian filter and Bilateral filter in digital image processing... I just know that both are used to smooth out an image but I would really ...
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1answer
20k views

How to Extract High Frequency and Low Frequency Component Using Bilateral Filter?

What does High frequency and low frequency component signify in an image. How to separate out the high frequency as well as low frequency component of an image using Bilateral filter.
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2answers
9k views

Understanding the Parameters of the Bilateral Filter

Allow me to show you a snip from Szeliski's Computer Vision book on bilateral filter. I don't know how to interpret these kernel definitions: In the actual summation what values do the $k$ and $l$ ...
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1answer
957 views

Anisotropic Diffusion Outputs

I am providing 2 d grey scale images to the anisotropic diffusion function in MATLAB but not getting desired outputs. How many iterations are ideal and how should i approach this problem?I am keeping ...