Brightness Contrast

Changes the light level and contrast. This operation operates in linear light, 'contrast' is a scale factor around 50%% gray, and 'brightness' a constant offset to apply after contrast scaling.
Contrast
Magnitude of contrast scaling >1.0 brighten < 1.0 darken
name: contrast type: double default: 1.00 minimum: -5.00 maximum: 5.00 ui-minimum: 0.00 ui-maximum: 2.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Brightness
Amount to increase brightness
name: brightness type: double default: 0.00 minimum: -3.00 maximum: 3.00 ui-minimum: -1.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
name: gegl:brightness-contrast
pads: input output
parent-class: GeglOperationPointFilter
categories: color
source: operations/common/brightness-contrast.c
GEGL This page is part of the online GEGL Documentation, GEGL is a data flow based image processing library/framework, made to fuel GIMPs high-bit depth non-destructive editing future.