Hue

This allows the hue of the selected image to be changed. The hue of a polychromatic image is taken to mean the level of each of the color components (RGB) and, in the case of monochromatic images, the grayscale is referred to. This is why in the dialogue the levels of each component can be changed separately or jointly.

The dialogue has the following fields:

Channel: this allows the channel to be selected where the changes will be applied and it has four options: RGB (applied on all channels), Red (only applies to the red channel), Green (only applies to the green channel), Blue (only applies to the blue channel).

Curve mode: this allows the curve mode to be selected which is used in the graphic to modify the hue level. There are four options:

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curve

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lineal

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exponential

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logarithmic

Factor: this allows a factor to be given to the logarithmic or exponential curve.

Change: these modes can only be used for curves of the Curve or Linear type and they serve for moving the graphic curve.

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movement of the curve vertically and horizontally.

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vertical movement of the curve.

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horizontal movement of the curve

Restore: puts the defect values on the current channel.

Restore all: puts the defect values on all the channels.

Load: this allows the loading of a file with an extension *.lri which contains the characteristics of the hue curve for application to the image.

Save: this allows the characteristics of the current hue curve to be saved in a file with the extension *.lri for use on a future occasion.