lowpass
Apply a low pass filter (for example, a Gaussian blur) to the image, while controlling the output contrast and saturation.
This module is primarily intended to be used in combination with a blend mode. For example, try using the local contrast mask preset with the overlay blend mode.
Note: This module performs blurs in Lab color space, which can produce undesirable effects, and is no longer recommended. Instead, use the contrast equalizer module for blurring or the tone equalizer module for dynamic range compression.
🔗module controls
- radius
- The radius of the blur.
- soften with
- The blur algorithm to use:
- gaussian blur: Blur all image channels (L, a, b)
- bilateral filter: Blur the L channel only, while preserving edges
- contrast
- Higher absolute values increase contrast. Lower absolute values reduce contrast. Negative values result in an inverted negative image. A value of zero leads to a neutral plane.
- brightness
- Negative values darken the image. Positive values lighten the image.
- saturation
- The color saturation. Negative values result in complementary colors by inverting the a/b channels. Higher absolute values increase color saturation. Lower absolute values reduce color saturation. A value of zero fully desaturates the image.