VFX Atlas
M 020 / 18301 Edge & Featuresalgorithm output

CLAHE Local Contrast

Clahe Local Contrast. edge & feature detection

Typeface · Chivo Mono

Real-world algorithm demonstration, applied to a NASA portrait.
Real-world algorithm demonstration, applied to a NASA portrait.Image: NASA / Eileen Collins · scikit-image (public domain)View source ↗

Prompt

Apply CLAHE Local Contrast to reveal fine detail within separate tonal neighborhoods, lifting shadow textures and clarifying bright surfaces without uniformly increasing contrast. Keep colors natural, highlights controlled, edges crisp, and grain restrained; avoid harsh halos or obvious tiled boundaries. Keep the original subject and composition.

Paste it into LetzAI with your own image to apply the effect ↗

Identify

Local details become visible without raising everything equally.

Principle

Contrast-limited1 local histogram equalization2 enhances details.

Try it out

Look for new structures in shadows.

Classification

Calculated image processing result.

Further examples · 8 images

BLM using satellites to study fishers in southern Oregon (27691391805).CLAHE.histogram
02 BLM using satellites to study fishers in southern Oregon (27691391805).CLAHE.histogramA fisher is visible on a fallen log within a dense forest environment. CLAHE processing reveals the animal's fur texture and individual leaves in the shadows while preserving the bright sky area.File:BLM using satellites to study fishers in southern Oregon (27691391805).jpg: Bureau of Land Management Oregon and Wa · CC BY 4.0 · Wikimedia Commons
One Blackfriars (Rectilinear Projection - Local Contrast Enhancement Higher Resolution)
03 One Blackfriars (Rectilinear Projection - Local Contrast Enhancement Higher Resolution)This high-resolution architectural view uses local contrast enhancement to sharpen the edges of the building. It ensures that the repeating vertical patterns are distinct despite the flat, overcast lighting conditions.Dominic's pics · CC BY 2.0 · Wikimedia Commons
City Center Mall in Haifa, Israel (DSC6024 - DSC6046; Hugin align 24 photos, de-vignette; G'MIC Median Blend, Tone Enhance, Local Contrast E
04 City Center Mall in Haifa, Israel (DSC6024 - DSC6046; Hugin align 24 photos, de-vignette; G'MIC Median Blend, Tone Enhance, Local Contrast EThe mall and harbor scene features G'MIC local contrast enhancement. This processing makes the textures of the rooftops and individual cars in the parking lot appear sharper by increasing variance in small pixel neighborhoods.DmitTrix · CC BY 4.0 · Wikimedia Commons
Aerial view of Kalymnos and nearby islands, Dodecanese, Greece - 2023-03-25 (DSC1573 - DSC1587; Hugin align 6 photos; G'MIC Median blend, Lo
05 Aerial view of Kalymnos and nearby islands, Dodecanese, Greece - 2023-03-25 (DSC1573 - DSC1587; Hugin align 6 photos; G'MIC Median blend, LoAn aerial island view processed with local contrast enhancement tools. The technique makes the rugged mountain ridges and geological folds visible through the atmospheric haze typically present in long-distance photography.DmitTrix · CC BY 4.0 · Wikimedia Commons
CLAHE Local Contrast, applied to “Refleksjoner”
06 CLAHE Local Contrast, applied to “Refleksjoner”Reflections of a woman and mountains show increased micro-contrast. The processed right side reveals sharper textures in the clouds and darker rocks without losing overall tonal balance.Karin Beate Nøsterud (photo); processed for the Atlas · CC BY 2.5 dk · Wikimedia Commons
CLAHE Local Contrast, applied to “Kawah-Ijen Indonesia Ijen-Sulfur-Miner-01”
07 CLAHE Local Contrast, applied to “Kawah-Ijen Indonesia Ijen-Sulfur-Miner-01”A sulfur miner carries baskets against a hazy background. The right side enhances the texture of the sulfur rocks and basket weave by increasing local edge contrast.CEphoto, Uwe Aranas (photo); processed for the Atlas · CC BY-SA 3.0 · Wikimedia Commons
CLAHE Local Contrast, applied to “Hrad Pernštejn (Pernstein) - brána (5. nádvoří)”
08 CLAHE Local Contrast, applied to “Hrad Pernštejn (Pernstein) - brána (5. nádvoří)”This stone archway shows improved visibility in the shadows. The local histogram equalization brings out the rough texture of the masonry and stacked wood in the dark interior.Pudelek (photo); processed for the Atlas · CC BY-SA 4.0 · Wikimedia Commons