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SoRotateProcessing2d Class

OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d image filter.

Inheritance Hierarchy

Namespace: OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms
Assembly: OIV.ImageViz (in OIV.ImageViz.dll) Version: 10.12.3.0 (10.12.3.0)
Syntax
public class SoRotateProcessing2d : SoImageVizEngine

The SoRotateProcessing2d type exposes the following members.

Constructors
  NameDescription
Public methodSoRotateProcessing2d

Constructor.

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Methods
  NameDescription
Public methodAbortEvaluate

Abort current processing as soon as possible.

(Inherited from SoImageVizEngine.)
Public methodCopy

Creates and returns an exact copy of the engine.

(Inherited from SoEngine.)
Public methodCopyFieldValues(SoFieldContainer)
Calls CopyFieldValues(fc, false).
(Inherited from SoFieldContainer.)
Public methodCopyFieldValues(SoFieldContainer, Boolean)

Copies the contents of fc's fields into this object's fields.

(Inherited from SoFieldContainer.)
Public methodDispose
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.)
Public methodEnableNotify

Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false).

(Inherited from SoFieldContainer.)
Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Public methodFieldsAreEqual

Returns true if this object's fields are exactly equal to fc's fields.

(Inherited from SoFieldContainer.)
Public methodGet

Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.

(Inherited from SoFieldContainer.)
Public methodGetAllFields

Returns a list of fields, including the eventIn's and eventOut's.

(Inherited from SoFieldContainer.)
Public methodGetEventIn

Returns a the eventIn with the given name.

(Inherited from SoFieldContainer.)
Public methodGetEventOut

Returns the eventOut with the given name.

(Inherited from SoFieldContainer.)
Public methodGetField

Returns a the field of this object whose name is fieldName.

(Inherited from SoFieldContainer.)
Public methodGetFieldName

Returns the name of the given field in the fieldName argument.

(Inherited from SoFieldContainer.)
Public methodGetFields

Appends references to all of this object's fields to resultList, and returns the number of fields appended.

(Inherited from SoFieldContainer.)
Public methodGetHashCode
Overrides GetHashCode().
(Inherited from SoNetBase.)
Public methodGetName

Returns the name of an instance.

(Inherited from SoBase.)
Public methodGetOutput

Returns a reference to the engine output with the given name.

(Inherited from SoEngine.)
Public methodGetOutputName

Returns (in outputName) the name of the engine output (output).

(Inherited from SoEngine.)
Public methodGetOutputs

Returns a list of outputs in this engine.

(Inherited from SoEngine.)
Public methodGetStringName (Inherited from SoBase.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodHasDefaultValues

Returns true if all of the object's fields have their default values.

(Inherited from SoFieldContainer.)
Public methodIsEvaluating

Returns true if the engine evaluation is in progress.

(Inherited from SoImageVizEngine.)
Public methodIsNotifyEnabled

Notification is the process of telling interested objects that this object has changed.

(Inherited from SoFieldContainer.)
Public methodIsSynchronizable

Gets the ScaleViz synchronizable state of this object.

(Inherited from SoBase.)
Public methodSet

Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.

(Inherited from SoFieldContainer.)
Public methodSetName (Inherited from SoBase.)
Public methodSetSynchronizable

Sets this to be a ScaleViz synchronizable object.

(Inherited from SoBase.)
Public methodSetToDefaults

Sets all fields in this object to their default values.

(Inherited from SoFieldContainer.)
Public methodStartEvaluate

Evaluate engine and dependencies in another thread without blocking the current one.

(Inherited from SoImageVizEngine.)
Public methodToString
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.)
Public methodTouch

Marks an instance as modified, simulating a change to it.

(Inherited from SoBase.)
Public methodWaitEvaluate

Wait for the end of engine evaluation.

(Inherited from SoImageVizEngine.)
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Properties
  NameDescription
Public propertyinImage

The input image.

Public propertyIsDisposable
ISafeDisposable interface implementation.
(Inherited from SoDisposable.)
Public propertyoutImage

The output image.

Public propertyprecisionMode

Select the interpolation mode.

Public propertyrotationAngle

The angle of the rotation in degrees (not radians).

Public propertyrotationCenter

The rotation center coordinates.

Public propertyUserData
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.)
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Events
  NameDescription
Public eventOnBegin

Event raised when the processing begins.

(Inherited from SoImageVizEngine.)
Public eventOnEnd

Event raised when processing ends and the result is available.

(Inherited from SoImageVizEngine.)
Public eventOnProgress

Event raised while processing is running.

(Inherited from SoImageVizEngine.)
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Remarks

The OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d filter performs a rotation of an image by a user-defined angle and an origin . The new coordinates can be expressed as a function of the old coordinates : where are the coordinates of the center of the rotation. Or in a matrix notation:

Once again, destination pixels may be outside the image, and normally these pixels are ignored. Furthermore, the coordinates obtained are not always integers, even though an image is a discrete space. The figure below illustrates the grid of the resultant image, the point being a pixel in this image. The points are generated from the rotation of the original image and do not fit on the grid.

To calculate the intensity of each pixel , two methods are possible:
  • Take the grey level of the nearest neighbor. For the above example would be given the intensity of

  • Take into account the four nearest neighbors and calculate the grey level based on the average of the four points, weighted by their distance, as in:

If denotes the distance , is defined as: e.g. .

The choice of the 's ensures that the interpolated value is equal to if matches . This method gives better results but requires more computation time.

NOTE: In OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d filter, the image is perceived as a cylinder, where the information outside the image area wraps around and is placed in the blank part.

FILE FORMAT/DEFAULT

RotateProcessing2d {
inImage NULL
rotationCenter 0 0
rotationAngle 10.0f
precisionMode NEARBY_PIXEL
}

Library references: rotate

See Also