Class ContrastExtensions

Defines extensions that allow the alteration of the contrast component of an Image using Mutate/Clone.

Inheritance
Object
ContrastExtensions
Inherited Members
Namespace: SixLabors.ImageSharp.Processing
Assembly: SixLabors.ImageSharp.dll
Syntax
public static class ContrastExtensions

Methods

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Contrast(IImageProcessingContext, Single)

Alters the contrast component of the image.

Declaration
public static IImageProcessingContext Contrast(this IImageProcessingContext source, float amount)
Parameters
Type Name Description
IImageProcessingContext source

The image this method extends.
Single amount

The proportion of the conversion. Must be greater than or equal to 0.
Returns
Type Description
IImageProcessingContext

The IImageProcessingContext to allow chaining of operations.
Remarks

A value of 0 will create an image that is completely gray. A value of 1 leaves the input unchanged. Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing results with more contrast.

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Contrast(IImageProcessingContext, Single, Rectangle)

Alters the contrast component of the image.

Declaration
public static IImageProcessingContext Contrast(this IImageProcessingContext source, float amount, Rectangle rectangle)
Parameters
Type Name Description
IImageProcessingContext source

The image this method extends.
Single amount

The proportion of the conversion. Must be greater than or equal to 0.
Rectangle rectangle

The Rectangle structure that specifies the portion of the image object to alter.
Returns
Type Description
IImageProcessingContext

The IImageProcessingContext to allow chaining of operations.
Remarks

A value of 0 will create an image that is completely gray. A value of 1 leaves the input unchanged. Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing results with more contrast.