MoveTowards Class

Move towards filter.

Inheritance Hierarchy

SystemObject
  Accord.Imaging.FiltersBaseInPlaceFilter
    Accord.Imaging.FiltersBaseInPlaceFilter2
      Accord.Imaging.FiltersMoveTowards

Namespace: Accord.Imaging.Filters
Assembly: Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0

Syntax

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public class MoveTowards : BaseInPlaceFilter2

Public Class MoveTowards
	Inherits BaseInPlaceFilter2

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The MoveTowards type exposes the following members.

Constructors

	Name	Description
	MoveTowards	Initializes a new instance of the MoveTowards class
	MoveTowards(Bitmap)	Initializes a new instance of the MoveTowards class.
	MoveTowards(UnmanagedImage)	Initializes a new instance of the MoveTowards class.
	MoveTowards(Bitmap, Int32)	Initializes a new instance of the MoveTowards class.
	MoveTowards(UnmanagedImage, Int32)	Initializes a new instance of the MoveTowards class.

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Properties

	Name	Description
	FormatTranslations	Format translations dictionary. (Overrides BaseInPlaceFilterFormatTranslations.)
	OverlayImage	Overlay image. (Inherited from BaseInPlaceFilter2.)
	StepSize	Step size, [0, 65535].
	UnmanagedOverlayImage	Unmanaged overlay image. (Inherited from BaseInPlaceFilter2.)

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Methods

	Name	Description
	Apply(Bitmap)	Apply filter to an image. (Inherited from BaseInPlaceFilter.)
	Apply(BitmapData)	Apply filter to an image. (Inherited from BaseInPlaceFilter.)
	Apply(UnmanagedImage)	Apply filter to an image in unmanaged memory. (Inherited from BaseInPlaceFilter.)
	Apply(UnmanagedImage, UnmanagedImage)	Apply filter to an image in unmanaged memory. (Inherited from BaseInPlaceFilter.)
	ApplyInPlace(Bitmap)	Apply filter to an image. (Inherited from BaseInPlaceFilter.)
	ApplyInPlace(BitmapData)	Apply filter to an image. (Inherited from BaseInPlaceFilter.)
	ApplyInPlace(UnmanagedImage)	Apply filter to an unmanaged image. (Inherited from BaseInPlaceFilter.)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ProcessFilter(UnmanagedImage)	Process the filter on the specified image. (Inherited from BaseInPlaceFilter2.)
	ProcessFilter(UnmanagedImage, UnmanagedImage)	Process the filter on the specified image. (Overrides BaseInPlaceFilter2ProcessFilter(UnmanagedImage, UnmanagedImage).)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Extension Methods

	Name	Description
	HasMethod	Checks whether an object implements a method with the given name. (Defined by ExtensionMethods.)
	IsEqual	Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices. (Defined by Matrix.)
	To(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.)
	ToT	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.)

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Remarks

The result of this filter is an image, which is based on source image, but updated in the way to decrease diffirence with overlay image - source image is moved towards overlay image. The update equation is defined in the next way: res = src + Min( Abs( ovr - src ), step ) * Sign( ovr - src ).

The bigger is step size value the more resulting image will look like overlay image. For example, in the case if step size is equal to 255 (or 65535 for images with 16 bits per channel), the resulting image will be equal to overlay image regardless of source image's pixel values. In the case if step size is set to 1, the resulting image will very little differ from the source image. But, in the case if the filter is applied repeatedly to the resulting image again and again, it will become equal to overlay image in maximum 255 (65535 for images with 16 bits per channel) iterations.

The filter accepts 8 and 16 bpp grayscale images and 24, 32, 48 and 64 bpp color images for processing.

Sample usage:

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// create filter
MoveTowards filter = new MoveTowards( overlayImage, 20 );
// apply the filter
Bitmap resultImage = filter.Apply( sourceImage );

Source image:

Overlay image:

Result image:

Reference

Accord.Imaging.Filters Namespace