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Accord.NET (logo) ChannelFiltering Class
Channels filters.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseInPlacePartialFilter
    Accord.Imaging.FiltersChannelFiltering

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.4.0
Syntax
public class ChannelFiltering : BaseInPlacePartialFilter
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The ChannelFiltering type exposes the following members.

Constructors
  NameDescription
Public methodChannelFiltering
Initializes a new instance of the ChannelFiltering class.
Public methodChannelFiltering(IntRange, IntRange, IntRange)
Initializes a new instance of the ChannelFiltering class.
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Properties
  NameDescription
Public propertyBlue
Blue channel's range.
Public propertyBlueFillOutsideRange
Determines, if blue channel should be filled inside or outside filtering range.
Public propertyFillBlue
Blue fill value.
Public propertyFillGreen
Green fill value.
Public propertyFillRed
Red fill value.
Public propertyFormatTranslations
Format translations dictionary.
(Overrides BaseInPlacePartialFilterFormatTranslations.)
Public propertyGreen
Green channel's range.
Public propertyGreenFillOutsideRange
Determines, if green channel should be filled inside or outside filtering range.
Public propertyRed
Red channel's range.
Public propertyRedFillOutsideRange
Determines, if red channel should be filled inside or outside filtering range.
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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 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.)
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 Matrix.)
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Remarks

The filter does color channels' filtering by clearing (filling with specified values) values, which are inside/outside of the specified value's range. The filter allows to fill certain ranges of RGB color channels with specified value.

The filter is similar to ColorFiltering, but operates with not entire pixels, but with their RGB values individually. This means that pixel itself may not be filtered (will be kept), but one of its RGB values may be filtered if they are inside/outside of specified range.

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

Sample usage:

// create filter
ChannelFiltering filter = new ChannelFiltering( );
// set channels' ranges to keep
filter.Red   = new IntRange(   0, 255 );
filter.Green = new IntRange( 100, 255 );
filter.Blue  = new IntRange( 100, 255 );
// apply the filter
filter.ApplyInPlace( image );

Initial image:

Result image:

See Also