How does CLAHE differ from global histogram equalization?

Global equalization uses one histogram for the image. CLAHE works on local tiles and blends them, so different regions can receive different tonal adjustments.

What does the clip limit control?

The clip limit caps histogram amplification within each tile. Higher values can increase local contrast and can also make image noise more visible.

What does tile size change?

Smaller tiles adapt to narrower regions. Larger tiles produce broader tonal changes across the image.

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بهبود کنتراست با CLAHE

CLAHE divides the image into tiles and equalizes each tile separately, then bilinearly interpolates between tiles to avoid blocking artifacts. The clip limit caps amplification so noise isn't blown up. Used in medical imaging, dark photography rescue, and dehazing.

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CLAHE Enhance

CLAHE divides an image into tiles, equalizes their histograms separately, limits contrast amplification with a clip value, and blends neighboring tile results. Use the controls to compare stronger local contrast against possible noise amplification.

Available Controls

Clip limit: 1 to 40
Tile size: 2 to 16
Output format: PNG or JPG

How to Use CLAHE Enhance

Select an image — Choose the JPG, PNG, or WebP image to enhance.
Tune local contrast — Adjust the clip limit and tile size while comparing the preview.
Review and download — Process the selected settings and save the generated PNG or JPG.

Frequently Asked Questions

How does CLAHE differ from global histogram equalization?: Global equalization uses one histogram for the image. CLAHE works on local tiles and blends them, so different regions can receive different tonal adjustments.
What does the clip limit control?: The clip limit caps histogram amplification within each tile. Higher values can increase local contrast and can also make image noise more visible.
What does tile size change?: Smaller tiles adapt to narrower regions. Larger tiles produce broader tonal changes across the image.

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