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    • SixLabors.ImageSharp
      • ByteOrder
      • Color
      • ColorMatrix
      • Configuration
      • DenseMatrix<T>
      • GeometryUtilities
      • GraphicOptionsDefaultsExtensions
      • GraphicsOptions
      • IDeepCloneable
      • IDeepCloneable<T>
      • Image
      • ImageExtensions
      • ImageFormatException
      • ImageFrame
      • ImageFrameCollection
      • ImageFrameCollectionExtensions
      • ImageFrameCollection<TPixel>
      • ImageFrame<TPixel>
      • ImageInfo
      • ImageProcessingException
      • Image<TPixel>
      • IndexedImageFrame<TPixel>
      • InvalidImageContentException
      • Matrix3x2Extensions
      • MetadataExtensions
      • Number
      • PixelAccessorAction<TPixel>
      • PixelAccessorAction<TPixel1, TPixel2>
      • PixelAccessorAction<TPixel1, TPixel2, TPixel3>
      • PixelAccessor<TPixel>
      • Point
      • PointF
      • Rational
      • ReadOrigin
      • Rectangle
      • RectangleF
      • SignedRational
      • Size
      • SizeF
      • UnknownImageFormatException
    • SixLabors.ImageSharp.Advanced
      • AdvancedImageExtensions
      • IConfigurationProvider
      • IImageVisitor
      • IImageVisitorAsync
      • IRowIntervalOperation
      • IRowIntervalOperation<TBuffer>
      • IRowOperation
      • IRowOperation<TBuffer>
      • ParallelExecutionSettings
      • ParallelRowIterator
    • SixLabors.ImageSharp.ColorSpaces
      • CieLab
      • CieLch
      • CieLchuv
      • CieLuv
      • CieXyy
      • CieXyz
      • Cmyk
      • Hsl
      • Hsv
      • HunterLab
      • Illuminants
      • LinearRgb
      • Lms
      • Rgb
      • RgbWorkingSpaces
      • YCbCr
    • SixLabors.ImageSharp.ColorSpaces.Companding
      • GammaCompanding
      • LCompanding
      • Rec2020Companding
      • Rec709Companding
      • SRgbCompanding
    • SixLabors.ImageSharp.ColorSpaces.Conversion
      • CieXyChromaticityCoordinates
      • ColorSpaceConverter
      • ColorSpaceConverterOptions
      • GammaWorkingSpace
      • IChromaticAdaptation
      • LWorkingSpace
      • LmsAdaptationMatrix
      • Rec2020WorkingSpace
      • Rec709WorkingSpace
      • RgbPrimariesChromaticityCoordinates
      • RgbWorkingSpace
      • SRgbWorkingSpace
      • VonKriesChromaticAdaptation
    • SixLabors.ImageSharp.Compression.Zlib
      • DeflateCompressionLevel
    • SixLabors.ImageSharp.Diagnostics
      • MemoryDiagnostics
      • UndisposedAllocationDelegate
    • SixLabors.ImageSharp.Formats
      • DecoderOptions
      • IImageDecoder
      • IImageEncoder
      • IImageFormat
      • IImageFormatConfigurationModule
      • IImageFormatDetector
      • IImageFormat<TFormatMetadata>
      • IImageFormat<TFormatMetadata, TFormatFrameMetadata>
      • ISpecializedDecoderOptions
      • ISpecializedImageDecoder<T>
      • ImageDecoder
      • ImageEncoder
      • ImageFormatManager
      • PixelTypeInfo
      • QuantizingImageEncoder
      • SpecializedImageDecoder<T>
    • SixLabors.ImageSharp.Formats.Bmp
      • BmpBitsPerPixel
      • BmpConfigurationModule
      • BmpDecoder
      • BmpDecoderOptions
      • BmpEncoder
      • BmpFileMarkerType
      • BmpFormat
      • BmpImageFormatDetector
      • BmpInfoHeaderType
      • BmpMetadata
      • RleSkippedPixelHandling
    • SixLabors.ImageSharp.Formats.Gif
      • GifColorTableMode
      • GifConfigurationModule
      • GifDecoder
      • GifDisposalMethod
      • GifEncoder
      • GifFormat
      • GifFrameMetadata
      • GifImageFormatDetector
      • GifMetadata
      • IGifExtension
    • SixLabors.ImageSharp.Formats.Jpeg
      • JpegConfigurationModule
      • JpegDecoder
      • JpegDecoderOptions
      • JpegDecoderResizeMode
      • JpegEncoder
      • JpegEncodingColor
      • JpegFormat
      • JpegImageFormatDetector
      • JpegMetadata
    • SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder
      • HuffmanSpec
    • SixLabors.ImageSharp.Formats.Pbm
      • PbmColorType
      • PbmComponentType
      • PbmConfigurationModule
      • PbmDecoder
      • PbmEncoder
      • PbmEncoding
      • PbmFormat
      • PbmImageFormatDetector
      • PbmMetadata
    • SixLabors.ImageSharp.Formats.Png
      • PngBitDepth
      • PngBlendMethod
      • PngChunkFilter
      • PngColorType
      • PngConfigurationModule
      • PngCrcChunkHandling
      • PngDecoder
      • PngDecoderOptions
      • PngDisposalMethod
      • PngEncoder
      • PngFilterMethod
      • PngFormat
      • PngFrameMetadata
      • PngImageFormatDetector
      • PngInterlaceMode
      • PngMetadata
      • PngTransparentColorMode
    • SixLabors.ImageSharp.Formats.Png.Chunks
      • PngTextData
    • SixLabors.ImageSharp.Formats.Qoi
      • QoiChannels
      • QoiColorSpace
      • QoiConfigurationModule
      • QoiEncoder
      • QoiFormat
      • QoiImageFormatDetector
      • QoiMetadata
    • SixLabors.ImageSharp.Formats.Tga
      • TgaBitsPerPixel
      • TgaCompression
      • TgaConfigurationModule
      • TgaDecoder
      • TgaEncoder
      • TgaFormat
      • TgaImageFormatDetector
      • TgaImageType
      • TgaImageTypeExtensions
      • TgaMetadata
    • SixLabors.ImageSharp.Formats.Tiff
      • TiffBitsPerPixel
      • TiffBitsPerSample
      • TiffConfigurationModule
      • TiffDecoder
      • TiffEncoder
      • TiffFormat
      • TiffFormatType
      • TiffFrameMetadata
      • TiffImageFormatDetector
      • TiffMetadata
    • SixLabors.ImageSharp.Formats.Tiff.Compression
      • FaxCompressionOptions
    • SixLabors.ImageSharp.Formats.Tiff.Compression.Decompressors
      • LzwString
    • SixLabors.ImageSharp.Formats.Tiff.Constants
      • TiffCompression
      • TiffInkSet
      • TiffNewSubfileType
      • TiffPhotometricInterpretation
      • TiffPlanarConfiguration
      • TiffPredictor
      • TiffSampleFormat
      • TiffSubfileType
    • SixLabors.ImageSharp.Formats.Webp
      • BackgroundColorHandling
      • WebpBitsPerPixel
      • WebpBlendMethod
      • WebpConfigurationModule
      • WebpDecoder
      • WebpDecoderOptions
      • WebpDisposalMethod
      • WebpEncoder
      • WebpEncodingMethod
      • WebpFileFormatType
      • WebpFormat
      • WebpFrameMetadata
      • WebpImageFormatDetector
      • WebpMetadata
      • WebpTransparentColorMode
    • SixLabors.ImageSharp.Memory
      • AllocationOptions
      • Buffer2DExtensions
      • Buffer2DRegion<T>
      • Buffer2D<T>
      • IMemoryGroup<T>
      • InvalidMemoryOperationException
      • MemoryAllocator
      • MemoryAllocatorExtensions
      • MemoryAllocatorOptions
      • RowInterval
      • SimpleGcMemoryAllocator
    • SixLabors.ImageSharp.Metadata
      • ImageFrameMetadata
      • ImageMetadata
      • PixelResolutionUnit
    • SixLabors.ImageSharp.Metadata.Profiles.Cicp
      • CicpColorPrimaries
      • CicpMatrixCoefficients
      • CicpProfile
      • CicpTransferCharacteristics
    • SixLabors.ImageSharp.Metadata.Profiles.Exif
      • EncodedString
      • EncodedString.CharacterCode
      • ExifDataType
      • ExifOrientationMode
      • ExifParts
      • ExifProfile
      • ExifTag
      • ExifTag<TValueType>
      • IExifValue
      • IExifValue<TValueType>
    • SixLabors.ImageSharp.Metadata.Profiles.Icc
      • IccColorSpaceType
      • IccDeviceAttribute
      • IccPrimaryPlatformType
      • IccProfile
      • IccProfileClass
      • IccProfileFlag
      • IccProfileHeader
      • IccProfileId
      • IccProfileTag
      • IccRenderingIntent
      • IccTagDataEntry
      • IccTypeSignature
      • IccVersion
      • InvalidIccProfileException
    • SixLabors.ImageSharp.Metadata.Profiles.Iptc
      • IptcProfile
      • IptcTag
      • IptcTagExtensions
      • IptcValue
    • SixLabors.ImageSharp.Metadata.Profiles.Xmp
      • XmpProfile
    • SixLabors.ImageSharp.PixelFormats
      • A8
      • Abgr32
      • Argb32
      • Bgr24
      • Bgr565
      • Bgra32
      • Bgra4444
      • Bgra5551
      • Byte4
      • HalfSingle
      • HalfVector2
      • HalfVector4
      • IPackedVector<TPacked>
      • IPixel
      • IPixel<TSelf>
      • L16
      • L8
      • La16
      • La32
      • NormalizedByte2
      • NormalizedByte4
      • NormalizedShort2
      • NormalizedShort4
      • PixelAlphaCompositionMode
      • PixelAlphaRepresentation
      • PixelBlender<TPixel>
      • PixelColorBlendingMode
      • PixelConversionModifiers
      • PixelOperations<TPixel>
      • Rg32
      • Rgb24
      • Rgb48
      • Rgba1010102
      • Rgba32
      • Rgba64
      • RgbaVector
      • Short2
      • Short4
    • SixLabors.ImageSharp.Processing
      • AdaptiveThresholdExtensions
      • AffineTransformBuilder
      • AnchorPositionMode
      • AutoOrientExtensions
      • BackgroundColorExtensions
      • BinaryDitherExtensions
      • BinaryThresholdExtensions
      • BinaryThresholdMode
      • BlackWhiteExtensions
      • BokehBlurExtensions
      • BoxBlurExtensions
      • BrightnessExtensions
      • ColorBlindnessExtensions
      • ColorBlindnessMode
      • ContrastExtensions
      • CropExtensions
      • DetectEdgesExtensions
      • DitherExtensions
      • DrawImageExtensions
      • EntropyCropExtensions
      • FilterExtensions
      • FlipExtensions
      • FlipMode
      • GaussianBlurExtensions
      • GaussianSharpenExtensions
      • GlowExtensions
      • GrayscaleExtensions
      • GrayscaleMode
      • HistogramEqualizationExtensions
      • HueExtensions
      • IImageProcessingContext
      • InvertExtensions
      • KnownDitherings
      • KnownEdgeDetectorKernels
      • KnownFilterMatrices
      • KnownQuantizers
      • KnownResamplers
      • KodachromeExtensions
      • LightnessExtensions
      • LomographExtensions
      • MedianBlurExtensions
      • OilPaintExtensions
      • OpacityExtensions
      • PadExtensions
      • PixelRowDelegateExtensions
      • PixelRowOperation
      • PixelRowOperation<T>
      • PixelateExtensions
      • PolaroidExtensions
      • ProcessingExtensions
      • ProjectiveTransformBuilder
      • QuantizeExtensions
      • ResizeExtensions
      • ResizeMode
      • ResizeOptions
      • RotateExtensions
      • RotateFlipExtensions
      • RotateMode
      • SaturateExtensions
      • SepiaExtensions
      • SkewExtensions
      • SwizzleExtensions
      • TaperCorner
      • TaperSide
      • TransformExtensions
      • TransformSpace
      • VignetteExtensions
    • SixLabors.ImageSharp.Processing.Processors
      • CloningImageProcessor
      • CloningImageProcessor<TPixel>
      • ICloningImageProcessor
      • ICloningImageProcessor<TPixel>
      • IImageProcessor
      • IImageProcessor<TPixel>
      • ImageProcessor<TPixel>
    • SixLabors.ImageSharp.Processing.Processors.Binarization
      • AdaptiveThresholdProcessor
      • BinaryThresholdProcessor
    • SixLabors.ImageSharp.Processing.Processors.Convolution
      • BokehBlurProcessor
      • BorderWrappingMode
      • BoxBlurProcessor
      • EdgeDetector2DKernel
      • EdgeDetector2DProcessor
      • EdgeDetectorCompassKernel
      • EdgeDetectorCompassProcessor
      • EdgeDetectorKernel
      • EdgeDetectorProcessor
      • GaussianBlurProcessor
      • GaussianSharpenProcessor
      • MedianBlurProcessor
    • SixLabors.ImageSharp.Processing.Processors.Dithering
      • ErrorDither
      • IDither
      • IPaletteDitherImageProcessor<TPixel>
      • OrderedDither
      • PaletteDitherProcessor
    • SixLabors.ImageSharp.Processing.Processors.Drawing
      • DrawImageProcessor
    • SixLabors.ImageSharp.Processing.Processors.Effects
      • IPixelRowDelegate
      • OilPaintingProcessor
      • PixelateProcessor
    • SixLabors.ImageSharp.Processing.Processors.Filters
      • AchromatomalyProcessor
      • AchromatopsiaProcessor
      • BlackWhiteProcessor
      • BrightnessProcessor
      • ContrastProcessor
      • DeuteranomalyProcessor
      • DeuteranopiaProcessor
      • FilterProcessor
      • GrayscaleBt601Processor
      • GrayscaleBt709Processor
      • HueProcessor
      • InvertProcessor
      • KodachromeProcessor
      • LightnessProcessor
      • LomographProcessor
      • OpacityProcessor
      • PolaroidProcessor
      • ProtanomalyProcessor
      • ProtanopiaProcessor
      • SaturateProcessor
      • SepiaProcessor
      • TritanomalyProcessor
      • TritanopiaProcessor
    • SixLabors.ImageSharp.Processing.Processors.Normalization
      • AdaptiveHistogramEqualizationProcessor
      • AdaptiveHistogramEqualizationSlidingWindowProcessor
      • AutoLevelProcessor
      • GlobalHistogramEqualizationProcessor
      • HistogramEqualizationMethod
      • HistogramEqualizationOptions
      • HistogramEqualizationProcessor
    • SixLabors.ImageSharp.Processing.Processors.Overlays
      • BackgroundColorProcessor
      • GlowProcessor
      • VignetteProcessor
    • SixLabors.ImageSharp.Processing.Processors.Quantization
      • ColorMatchingMode
      • DefaultPixelSamplingStrategy
      • ExtensivePixelSamplingStrategy
      • IPixelSamplingStrategy
      • IQuantizer
      • IQuantizer<TPixel>
      • OctreeQuantizer
      • OctreeQuantizer<TPixel>
      • PaletteQuantizer
      • QuantizeProcessor
      • QuantizerConstants
      • QuantizerOptions
      • QuantizerUtilities
      • WebSafePaletteQuantizer
      • WernerPaletteQuantizer
      • WuQuantizer
    • SixLabors.ImageSharp.Processing.Processors.Transforms
      • AffineTransformProcessor
      • AutoOrientProcessor
      • BicubicResampler
      • BoxResampler
      • CropProcessor
      • CubicResampler
      • DegenerateTransformException
      • EntropyCropProcessor
      • FlipProcessor
      • IResampler
      • IResamplingTransformImageProcessor<TPixel>
      • ISwizzler
      • LanczosResampler
      • NearestNeighborResampler
      • ProjectiveTransformProcessor
      • ResizeProcessor
      • RotateProcessor
      • SkewProcessor
      • SwizzleProcessor<TSwizzler>
      • TriangleResampler
      • WelchResampler

    Struct OctreeQuantizer<TPixel>

    Encapsulates methods to calculate the color palette if an image using an Octree pattern. http://msdn.microsoft.com/en-us/library/aa479306.aspx

    Implements
    IQuantizer<TPixel>
    IDisposable
    Inherited Members
    ValueType.Equals(object)
    ValueType.GetHashCode()
    ValueType.ToString()
    object.Equals(object, object)
    object.GetType()
    object.ReferenceEquals(object, object)
    Namespace: SixLabors.ImageSharp.Processing.Processors.Quantization
    Assembly: SixLabors.ImageSharp.dll
    Syntax
    public struct OctreeQuantizer<TPixel> : IQuantizer<TPixel>, IDisposable where TPixel : unmanaged, IPixel<TPixel>
    Type Parameters
    Name Description
    TPixel

    The pixel format.

    Constructors

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    OctreeQuantizer(Configuration, QuantizerOptions)

    Initializes a new instance of the OctreeQuantizer<TPixel> struct.

    Declaration
    public OctreeQuantizer(Configuration configuration, QuantizerOptions options)
    Parameters
    Type Name Description
    Configuration configuration

    The configuration which allows altering default behaviour or extending the library.

    QuantizerOptions options

    The quantizer options defining quantization rules.

    Properties

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    Configuration

    Gets the configuration.

    Declaration
    public readonly Configuration Configuration { get; }
    Property Value
    Type Description
    Configuration
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    Options

    Gets the quantizer options defining quantization rules.

    Declaration
    public readonly QuantizerOptions Options { get; }
    Property Value
    Type Description
    QuantizerOptions
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    Palette

    Gets the quantized color palette.

    Declaration
    public ReadOnlyMemory<TPixel> Palette { get; }
    Property Value
    Type Description
    ReadOnlyMemory<TPixel>
    Exceptions
    Type Condition
    InvalidOperationException

    The palette has not been built via AddPaletteColors(Buffer2DRegion<TPixel>).

    Methods

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    AddPaletteColors(Buffer2DRegion<TPixel>)

    Adds colors to the quantized palette from the given pixel source.

    Declaration
    public readonly void AddPaletteColors(Buffer2DRegion<TPixel> pixelRegion)
    Parameters
    Type Name Description
    Buffer2DRegion<TPixel> pixelRegion

    The Buffer2DRegion<T> of source pixels to register.

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    Dispose()

    Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

    Declaration
    public void Dispose()
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    GetQuantizedColor(TPixel, out TPixel)

    Returns the index and color from the quantized palette corresponding to the given color.

    Declaration
    public readonly byte GetQuantizedColor(TPixel color, out TPixel match)
    Parameters
    Type Name Description
    TPixel color

    The color to match.

    TPixel match

    The matched color.

    Returns
    Type Description
    byte

    The byte index.

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    QuantizeFrame(ImageFrame<TPixel>, Rectangle)

    Quantizes an image frame and return the resulting output pixels.

    Declaration
    public readonly IndexedImageFrame<TPixel> QuantizeFrame(ImageFrame<TPixel> source, Rectangle bounds)
    Parameters
    Type Name Description
    ImageFrame<TPixel> source

    The source image frame to quantize.

    Rectangle bounds

    The bounds within the frame to quantize.

    Returns
    Type Description
    IndexedImageFrame<TPixel>

    A IndexedImageFrame<TPixel> representing a quantized version of the source frame pixels.

    Remarks

    Only executes the second (quantization) step. The palette has to be built by calling AddPaletteColors(Buffer2DRegion<TPixel>). To run both steps, use BuildPaletteAndQuantizeFrame<TPixel>(IQuantizer<TPixel>, ImageFrame<TPixel>, Rectangle).

    Implements

    IQuantizer<TPixel>
    IDisposable

    Extension Methods

    QuantizerUtilities.BuildPaletteAndQuantizeFrame<TPixel>(IQuantizer<TPixel>, ImageFrame<TPixel>, Rectangle)
    QuantizerUtilities.BuildPalette<TPixel>(IQuantizer<TPixel>, IPixelSamplingStrategy, ImageFrame<TPixel>)
    QuantizerUtilities.BuildPalette<TPixel>(IQuantizer<TPixel>, IPixelSamplingStrategy, Image<TPixel>)
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