![]() |
FrequencyFilter Class |
Namespace: Accord.Imaging.ComplexFilters
The FrequencyFilter type exposes the following members.
Name | Description | |
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![]() | FrequencyFilter |
Initializes a new instance of the FrequencyFilter class.
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![]() | FrequencyFilter(IntRange) |
Initializes a new instance of the FrequencyFilter class.
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Name | Description | |
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![]() | FrequencyRange |
Range of frequencies to keep.
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Name | Description | |
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![]() | Apply |
Apply filter to complex image.
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![]() | 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.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
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.) |
The filer keeps only specified range of frequencies in complex Fourier transformed image. The rest of frequencies are zeroed.
Sample usage:
// create complex image ComplexImage complexImage = ComplexImage.FromBitmap( image ); // do forward Fourier transformation complexImage.ForwardFourierTransform( ); // create filter FrequencyFilter filter = new FrequencyFilter( new IntRange( 20, 128 ) ); // apply filter filter.Apply( complexImage ); // do backward Fourier transformation complexImage.BackwardFourierTransform( ); // get complex image as bitmat Bitmap fourierImage = complexImage.ToBitmap( );
Initial image:
Fourier image: