What is the difference between Standard and Bilateral median filters?

Standard median filters are excellent for general noise reduction, while Bilateral filters are specifically designed to preserve edges by considering pixel intensity differences.

Why must the kernel size be an odd number?

The median filter calculates the middle value of a pixel neighborhood; an odd-sized kernel ensures there is a single central pixel to represent the median value.

Will this tool reduce the resolution of my image?

No, the tool processes pixel values to remove noise but does not change the dimensions or resolution of your original image file.

Can I process specific color channels?

Yes, you can choose to apply the filter to all channels, or isolate processing to luminance, chrominance, or the alpha channel only.

What is the maximum file size I can upload?

You can upload image files up to 20MB in size, including formats like JPEG, PNG, WebP, GIF, BMP, and TIFF.

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Median Pass Filter

Apply median pass filter to remove noise while preserving edges with multiple algorithms

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9 options

FilesUpload source files for this workflow.1

Image FilefileRequired

Single file max size: 20 MBSupported types: image/jpeg, image/png, image/webp, image/gif, image/bmp, image/tiff

Upload any image file (JPEG, PNG, WebP, GIF, BMP, TIFF) to remove noise while preserving edges

SettingsAdjust formats, ranges, numbers, and modes.7

Median AlgorithmselectOptionalChoose median filter algorithm. Standard works well for most noise typesKernel SizerangeOptional

325

Size of the median filter kernel (must be odd). Larger kernels remove more noise but may blur detailsFilter IterationsnumberOptionalNumber of median filter passes. More iterations = stronger noise reductionNoise ThresholdrangeOptional

0255

Sensitivity for noise detection. Higher values filter less aggressivelyChannel ProcessingselectOptionalChoose which color channels to processOutput FormatselectOptionalChoose output format or keep original. PNG recommended for maximum qualityQuality (1-100)numberOptionalOutput quality for lossy formats (JPEG, WebP). Higher = better quality but larger file size

TogglesEnable or disable optional behavior.1

Preserve EdgescheckboxOptionalEnabled when checkedMaintain edge detail while removing noise

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Median Pass Filter

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1. Restoring Grainy Night Photos

2. Cleaning Scanned Documents

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