|
CentralMoments Class |
Central image moments.
Inheritance HierarchyNamespace: Accord.Imaging.Moments
Assembly: Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0
SyntaxThe CentralMoments type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | CentralMoments(Int32) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(RawMoments) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(Bitmap, Int32) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(Single, Int32) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(Bitmap, Rectangle, Int32) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(Single, Rectangle, Int32) |
Initializes a new instance of the CentralMoments class.
|
| CentralMoments(UnmanagedImage, Rectangle, Int32) |
Initializes a new instance of the CentralMoments class.
|
Properties| Name | Description | |
|---|---|---|
 | Mu00 |
Central moment of order (0,0).
|
| Mu01 |
Central moment of order (0,1).
|
| Mu02 |
Central moment of order (0,2).
|
| Mu03 |
Central moment of order (0,3).
|
| Mu10 |
Central moment of order (1,0).
|
| Mu11 |
Central moment of order (1,1).
|
| Mu12 |
Central moment of order (1,2).
|
| Mu20 |
Central moment of order (2,0).
|
| Mu21 |
Central moment of order (2,1).
|
| Mu30 |
Central moment of order (3,0).
|
| Order |
Gets or sets the maximum order of the moments.
(Inherited from MomentsBase.) |
Methods| Name | Description | |
|---|---|---|
| Compute(Bitmap) |
Computes the moments for the specified image.
(Inherited from MomentsBase.) |
| Compute(BitmapData) |
Computes the moments for the specified image.
(Inherited from MomentsBase.) |
| Compute(RawMoments) |
Computes the center moments from the specified raw moments.
|
| Compute(UnmanagedImage) |
Computes the moments for the specified image.
(Inherited from MomentsBase.) |
| Compute(Single, Rectangle) |
Computes the center moments for the specified image.
(Overrides MomentsBaseCompute(Single, Rectangle).) |
| Compute(Bitmap, Rectangle) |
Computes the moments for the specified image.
(Inherited from MomentsBase.) |
| Compute(BitmapData, Rectangle) |
Computes the moments for the specified image.
(Inherited from MomentsBase.) |
| Compute(UnmanagedImage, Rectangle) |
Computes the center moments for the specified image.
(Overrides MomentsBaseCompute(UnmanagedImage, Rectangle).) |
| 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.) |
| GetOrientation |
Gets the orientation of the ellipse containing the image.
|
| GetSize |
Gets the size of the ellipse containing the image.
|
| GetSizeAndOrientation |
Gets both size and orientation of the ellipse containing the image.
|
| 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.) |
Fields| Name | Description | |
|---|---|---|
  | DefaultOrder |
Gets the default maximum moment order.
|
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, computer vision and related fields, an image moment is a certain particular weighted average (moment) of the image pixels' intensities, or a function of such moments, usually chosen to have some attractive property or interpretation.
Image moments are useful to describe objects after segmentation. Simple properties of the image which are found via image moments include area (or total intensity), its centroid, and information about its orientation.
The central moments can be used to find the location, center of mass and the dimensions of a given object within an image.
References:
- Wikipedia contributors. "Image moment." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia. Available at http://en.wikipedia.org/wiki/Image_moment
ExamplesBitmap image = ...; // Compute the center moments of up to third order CentralMoments cm = new CentralMoments(image, order: 3); // Get size and orientation of the image SizeF size = target.GetSize(); float angle = target.GetOrientation();
See Also