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GaborFilter Class |
Inheritance HierarchyNamespace: Accord.Imaging.Filters
Assembly: Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0
SyntaxThe GaborFilter type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | GaborFilter |
Initializes a new instance of the GaborFilter class.
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Properties| Name | Description | |
|---|---|---|
 | FormatTranslations |
Format translations dictionary.
(Overrides BaseFilterFormatTranslations.) |
| Gamma |
Gets or sets the aspect ratio for the filter. Default is 0.3.
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| Lambda |
Gets or sets the wavelength for the filter. Default is 4.0.
|
| Psi |
Gets or sets the phase offset for the filter. Default is 1.0.
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| Sigma |
Gets or sets the Gaussian variance for the filter. Default is 2.
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| Size |
Gets or sets the size of the filter. Default is 3.
|
| Theta |
Gets or sets the orientation for the filter, in radians. Default is 0.6.
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Methods| Name | Description | |
|---|---|---|
| Apply(Bitmap) |
Apply filter to an image.
(Inherited from BaseFilter.) |
| Apply(BitmapData) |
Apply filter to an image.
(Inherited from BaseFilter.) |
| Apply(UnmanagedImage) |
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.) |
| Apply(UnmanagedImage, UnmanagedImage) |
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.) |
| 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 |
Process the filter on the specified image.
(Overrides BaseFilterProcessFilter(UnmanagedImage, UnmanagedImage).) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
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.) |
RemarksIn image processing, a Gabor filter, named after Dennis Gabor, is a linear filter used for edge detection. Frequency and orientation representations of Gabor filters are similar to those of the human visual system, and they have been found to be particularly appropriate for texture representation and discrimination. In the spatial domain, a 2D Gabor filter is a Gaussian kernel function modulated by a sinusoidal plane wave. The Gabor filters are self-similar: all filters can be generated from one mother wavelet by dilation and rotation.
ExamplesThe following example applies a Gabor filter to detect lines at a 45 degrees from the following image:
Bitmap input = ...; // Create a new Gabor filter GaborFilter filter = new GaborFilter(); // Apply the filter Bitmap output = filter.Apply(input); // Show the output ImageBox.Show(output);
The resulting image is shown below.
See Also