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YCbCrReplaceChannel Class
Replace channel of YCbCr color space.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseInPlacePartialFilter
    Accord.Imaging.FiltersYCbCrReplaceChannel

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0
Syntax
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public class YCbCrReplaceChannel : BaseInPlacePartialFilter
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The YCbCrReplaceChannel type exposes the following members.

Constructors
  NameDescription
Public methodYCbCrReplaceChannel(Int16)
Initializes a new instance of the YCbCrReplaceChannel class.
Public methodYCbCrReplaceChannel(Int16, UnmanagedImage)
Initializes a new instance of the YCbCrReplaceChannel class.
Public methodYCbCrReplaceChannel(Int16, Bitmap)
Initializes a new instance of the YCbCrReplaceChannel class.
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Properties
  NameDescription
Public propertyChannel
YCbCr channel to replace.
Public propertyChannelImage
Grayscale image to use for channel replacement.
Public propertyFormatTranslations
Format translations dictionary.
(Overrides BaseInPlacePartialFilterFormatTranslations.)
Public propertyUnmanagedChannelImage
Unmanaged grayscale image to use for channel replacement.
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Methods
  NameDescription
Public methodApply(Bitmap)
Apply filter to an image.
(Inherited from BaseInPlacePartialFilter.)
Public methodApply(BitmapData)
Apply filter to an image.
(Inherited from BaseInPlacePartialFilter.)
Public methodApply(UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseInPlacePartialFilter.)
Public methodApply(UnmanagedImage, UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(Bitmap)
Apply filter to an image.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(BitmapData)
Apply filter to an image.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(UnmanagedImage)
Apply filter to an unmanaged image.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(Bitmap, Rectangle)
Apply filter to an image or its part.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(BitmapData, Rectangle)
Apply filter to an image or its part.
(Inherited from BaseInPlacePartialFilter.)
Public methodApplyInPlace(UnmanagedImage, Rectangle)
Apply filter to an unmanaged image or its part.
(Inherited from BaseInPlacePartialFilter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodProcessFilter
Process the filter on the specified image.
(Overrides BaseInPlacePartialFilterProcessFilter(UnmanagedImage, Rectangle).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodTo(Type)Overloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
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Remarks

Replaces specified YCbCr channel of color image with specified grayscale imge.

The filter is quite useful in conjunction with YCbCrExtractChannel filter (however may be used alone in some cases). Using the YCbCrExtractChannel filter it is possible to extract one of YCbCr channel, perform some image processing with it and then put it back into the original color image.

The filter accepts 24 and 32 bpp color images for processing.

Sample usage:

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// create YCbCrExtractChannel filter for channel extracting
YCbCrExtractChannel extractFilter = new YCbCrExtractChannel(
                                    YCbCr.CbIndex );
// extract Cb channel
Bitmap cbChannel = extractFilter.Apply( image );
// invert the channel
Invert invertFilter = new Invert( );
invertFilter.ApplyInPlace( cbChannel );
// put the channel back into the source image
YCbCrReplaceChannel replaceFilter = new YCbCrReplaceChannel(
                                    YCbCr.CbIndex, cbChannel );
replaceFilter.ApplyInPlace( image );

Initial image:

Result image:

See Also