Paint Modes - N


Negative

Secondary : No

Uses colour : No

Options : Mode

Description :

Invert the image or the image brightness depending on the selected mode. These modes are:

Normal (RGB space invert):

Each colour (R, G and B) is inverted. This makes bright areas dark, dark areas bright and also inverts the colours to their direct opposite on the colour wheel, ie, red goes to cyan, yellow goes to blue, green goes to magenta, cyan goes to red, blue goes to yellow, magenta goes to green, black goes to white and white goes to black.

Luma Invert (HLS space):

This inverts the brightness but leaves the colour of the image the same, so pink pixels stay pink, but dark pink pixels turn to light pink pixels and vice versa, black turns white and white turns black. Fully saturated colours (eg, bright yellow) are not affected by Luma Invert. This can produce quite unusual ghostly images when applied to photographs of people. (In previous versions this was the 'NegBright' paintmode.

Brightness Invert (HSB space): This inverts the brightness of each pixel. Light areas become dark, dark areas become light. Dark - saturated colours become bright - saturated colours, so you may see patches of bright-coloured pixels appear unexpectedly - this is normal.

Saturation and Brightness Invert (HSB space): This inverts both the brightness and saturation of each pixel. Light colourful areas become dark grey, dark grey areas become light and take on bright unusual colours. Can produce unusual and interesting results on many images. You may need to blur the image after use to remove sharp colour changes and other colour artifacts.

For more information about RGB, HSB and HLS space, see the section on colour models.

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