RandomNoiseDitherer(Single, NullableInt32) Constructor

public RandomNoiseDitherer(
	float strength = 0f,
	int? seed = null
)

Public Sub New ( 
	Optional strength As Single = 0F,
	Optional seed As Integer? = Nothing
)

public:
RandomNoiseDitherer(
	float strength = 0f, 
	Nullable<int> seed = nullptr
)

new : 
        ?strength : float32 * 
        ?seed : Nullable<int> 
(* Defaults:
        let _strength = defaultArg strength 0f
        let _seed = defaultArg seed null
*)
-> RandomNoiseDitherer

Parameters

strength  Single  (Optional)

The strength of the dithering effect between 0 and 1 (inclusive bounds). Specify 0 to use an auto value for each dithering session based on the used quantizer.
See the Remarks section of the OrderedDitherer.ConfigureStrength method for more details and some examples regarding dithering strength. The same applies also for the RandomNoiseDitherer class. This parameter is optional.
Default value: 0.

seed  NullableInt32  (Optional)

If , then a ThreadSafeRandom instance will be used internally with a time-dependent seed value, and the dithering session will allow parallel processing. If not , then a Random instance will be created for each dithering session with the specified seed, and the dithering session will not allow parallel processing.

public static IReadWriteBitmapData ToDitheredRandomNoise(IReadWriteBitmapData source, IQuantizer quantizer)
{
    IDitherer ditherer = new RandomNoiseDitherer();

    // a.) this solution returns a new bitmap data and does not change the original one:
    return source.Clone(quantizer.PixelFormatHint, quantizer, ditherer);

    // b.) alternatively, you can perform the dithering directly on the source bitmap data:
    source.Dither(quantizer, ditherer);
    return source;
}

The example above may produce the following results:

Reference