gives the negative of a color.
gives the negative of image, in which all colors have been negated.
negates every frame of a video.
gives a list of negative images or colors.
- ColorNegate, also known as color inversion, replaces every pixel in the image with the negative of that pixel.
- ColorNegate maps every color v to 1-ν.
- For images with defined color spaces, negation happens in the RGBColor space. »
- ColorNegate works with colors as well as 2D and 3D images. The color space and data type of the input are preserved.
Examplesopen allclose all
Negative of the color Yellow:
Negative of a black-and-white photo:
Negative of a grayscale 3D image:
Create an image effect by only negating the luminance channel of an urban night skyline:
Create false colorizations of an image by negating only one of the three RGB channels:
DeleteSmallComponents deletes small white components:
Make it delete small black components instead:
Negate a region of interest to create an alpha channel. Detect the region of interest:
Properties & Relations (7)
Color negation of gray results in gray:
Color negation happens in the RGBColor space:
Color negation results in the same color regardless of representation:
Color negation is equivalent to subtracting the image from 1:
Histogram of the negated image is a mirror of the original image:
ColorNegate of an RGB image is equivalent to mapping every pixel v to 1-v:
This does not hold true for other color spaces:
Negate only the lightness while preserving color components in the LCH color space:
Negate by applying a 180° hue rotation while preserving chroma and lightness:
Perform both lightness negation and hue rotation:
Wolfram Research (2008), ColorNegate, Wolfram Language function, https://reference.wolfram.com/language/ref/ColorNegate.html (updated 2021).
Wolfram Language. 2008. "ColorNegate." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2021. https://reference.wolfram.com/language/ref/ColorNegate.html.
Wolfram Language. (2008). ColorNegate. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ColorNegate.html