Real-world algorithm demonstration, applied to a NASA portrait.Image: NASA / Eileen Collins · scikit-image (public domain)View source ↗
Prompt
Apply a Gamma Curve effect, strongly lifting midtone brightness while keeping black and white endpoints anchored. Reveal shadow detail, create lighter intermediate tones, and soften the overall tonal weight through a smooth nonlinear adjustment. Preserve color relationships and existing texture without local halos. Keep the original subject and composition.
02Linear Distribution versus Gamma Corrected DistributionThis diagram compares raw linear data to gamma-corrected data. It demonstrates how midtones are remapped to appear uniform to human perception, rather than strictly following physical light intensity.I, the copyright holder of this work, hereby publish it under the following license: · Public domain · Wikimedia Commons03Gamma Curve, applied to “A Matinée at Lisztslabel QS:Lde,"Eine Matinée bei Liszt"label QS:Len,"A Matinée ”This lithograph of Liszt at a piano shows a significant shift in midtones. The cream paper and skin tones become much darker and more saturated after the power function transformation.Josef Kriehuber (photo); processed for the Atlas · Public domain · Wikimedia Commons04Gamma Curve, applied to “Elektriker bei der Arbeit 0809”The electrician on a utility pole is set against a bright blue sky. Non-linear redistribution pushes the sky and shadows to much deeper, darker tones while preserving the bright outlines.Ermell (photo); processed for the Atlas · CC BY-SA 4.0 · Wikimedia Commons05Gamma Curve, applied to “Tajines in a pottery shop in Morocco”This shop display of Moroccan pottery displays a redistribution of midtone values. Shadows between the tajines become crushed into black, while the colors on the ceramic surfaces appear heavily darkened.Jafri Ali (photo); processed for the Atlas · CC BY-SA 4.0 · Wikimedia Commons06Gamma Curve, applied to “Rotring S0214750 with Rapidograph 0.5 mm drawing 1.5–15 mm circles”A technical drawing pen sits against a black background. The gamma adjustment preserves the black and white points while darkening the gray plastic midtones and metallic reflections.Lucasbosch (photo); processed for the Atlas · CC BY-SA 4.0 · Wikimedia Commons07Gamma Curve, applied to “Infinity Edge Pool, Mauritius”An infinity pool and thatched hut are shown under a clear sky. The processed half shows the midtones of the water and sky compressed into much darker, richer blue values.Martin Falbisoner (photo); processed for the Atlas · CC BY-SA 4.0 · Wikimedia Commons