Click or drag to resize
Accord.NET (logo) Sharpen Class
Sharpen filter
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseUsingCopyPartialFilter
    Accord.Imaging.FiltersConvolution
      Accord.Imaging.FiltersSharpen

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.4.0
Syntax
public sealed class Sharpen : Convolution
Request Example View Source

The Sharpen type exposes the following members.

Constructors
  NameDescription
Public methodSharpen
Initializes a new instance of the Sharpen class.
Top
Properties
  NameDescription
Public propertyDivisor
Division factor.
(Inherited from Convolution.)
Public propertyDynamicDivisorForEdges
Use dynamic divisor for edges or not.
(Inherited from Convolution.)
Public propertyFormatTranslations
Format translations dictionary.
(Inherited from Convolution.)
Public propertyKernel
Convolution kernel.
(Inherited from Convolution.)
Public propertyProcessAlpha
Specifies if alpha channel must be processed or just copied.
(Inherited from Convolution.)
Public propertyThreshold
Threshold to add to weighted sum.
(Inherited from Convolution.)
Top
Methods
  NameDescription
Public methodApply(Bitmap)
Apply filter to an image.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApply(BitmapData)
Apply filter to an image.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApply(UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApply(UnmanagedImage, UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(Bitmap)
Apply filter to an image.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(BitmapData)
Apply filter to an image.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(UnmanagedImage)
Apply filter to an unmanaged image.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(Bitmap, Rectangle)
Apply filter to an image or its part.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(BitmapData, Rectangle)
Apply filter to an image or its part.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodApplyInPlace(UnmanagedImage, Rectangle)
Apply filter to an unmanaged image or its part.
(Inherited from BaseUsingCopyPartialFilter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(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.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Top
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.)
Top
Remarks

The filter performs convolution filter using the sharpen kernel:

 0  -1   0
-1   5  -1
 0  -1   0

For the list of supported pixel formats, see the documentation to Convolution filter.

Sample usage:

// create filter
Sharpen filter = new Sharpen( );
// apply the filter
filter.ApplyInPlace( image );

Initial image:

Result image:

See Also