ErrorDiffusionDithererAtkinson Property

Gets an ErrorDiffusionDitherer instance using the filter used by the Apple programmer Bill Atkinson. Uses a 4x3 matrix of only 6 effective values, and propagates only the 75% of the quantization error, which may cause total loss of details of light and dark areas (result may seem under- or overexposed) whereas midtones have higher contrast and preserve details better.

Definition

Namespace: KGySoft.Drawing.Imaging
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 9.1.1

C#

public static ErrorDiffusionDitherer Atkinson { get; }

VB

Public Shared ReadOnly Property Atkinson As ErrorDiffusionDitherer
	Get

C++

public:
static property ErrorDiffusionDitherer^ Atkinson {
	ErrorDiffusionDitherer^ get ();
}

F#

static member Atkinson : ErrorDiffusionDitherer with get

Property Value

ErrorDiffusionDitherer

Examples

The following example demonstrates how to use the ditherer returned by this property:

C#

public static IReadWriteBitmapData ToDitheredAtkinson(IReadWriteBitmapData source, IQuantizer quantizer)
{
    IDitherer ditherer = ErrorDiffusionDitherer.Atkinson;

    // 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:

Original image	Quantized and dithered image
Color hues with alpha gradient	Quantizing with system default 8 BPP palette
Grayscale color shades	Quantizing with black and white palette

Tip

See the Remarks section of the ErrorDiffusionDitherer class for more details and examples.

ErrorDiffusionDithererAtkinson Property

Definition

Property Value

Examples

See Also

Reference