Invert

Reverses the colors of an image, transforming dark areas into light and vice versa.

🖼️ Image options and parameters of invert method
🎭 Mask options and parameters of invert method

Invert filter is an image processing technique used to reverse the color values of an image, creating a negative or "inverted" version of the original. In this process, the darkest areas become the lightest, and the lightest areas become the darkest, while the midtones are adjusted accordingly. The invert filter is a simple but effective way to create visual contrast and produce interesting effects.

Applying invert filter on Images

Source:LennaBarbaraStandard boatMandrillPeppersHouse

Ran in 0.00μs (Infinity ops/s)

Parameters and default values

Kinds of images compatible with algorithm

Image property	What it means	Possible values
bitDepth	number of bits per channel	[1,8,16]
components	number of components	any
alpha	is alpha channel allowed	true

info

Parameters and options for Images and Masks are the same.

• options

Options

Property	Required	Default value
out	no	-

info

The method is also available for Masks.

Implementation

Here's how invert filter is implemented in ImageJS:

Pixel Transformation: For each pixel in the image, the inversion filter transforms its color intensity value. The new intensity value is calculated using the formula:

$New Intensity = Max Intensity - Original Intensity$

Where $Max Intensity$ is the maximum possible intensity value for the color channel.

warning

ImageJS uses components to calculate each pixel value and leaves alpha channel unchanged.