IMVAdvancedOpticalFlow2

IMVAdvancedOpticalFlow2 Interface.

The IMVAdvancedOpticalFlow2 interface gains access to the feature points used by the  MV AdvancedOpticalFlow filter.

Methods:

Header file: IMVAdvancedOpticalFlow.h
Interface definition language file: IMVAdvancedOpticalFlow.idl
Typelib: MVAdvancedOpticalFlow
Interface ID: IID_IMVAdvancedOpticalFlow2

Method IMVAdvancedOpticalFlow2::SlectedNewFeatures

Declaration: Method SelectNewFeatures As Boolean

VARIANT_TRUE if new features have been chosen for the last processed frame, VARIANT_FALSE if the old features were searched in the new frame.

C Prototype:

HRESULT SelectedNewFeatures(VARIANT_BOOL* pbFlag);

Method IMVAdvancedOpticalFlow2::GetNumOfFeatures

Declaration: Method GetNumOfFeatures As Long

Returns the number of features used for tracking in the last processed frame. C Prototype:

HRESULT GetNumOfFeatures(int* piNum);

Method IMVAdvancedOpticalFlow2::GetFeaturePoint

Declaration: Sub GetFeaturePoint( iIndex As Long, dXPosition As Double, dYPosition As Double)

Returns X and Y positions of the feature point for the given feature array index.

C Prototype:

HRESULT GetFeaturePoint(int iIndex, double *pdXPosition, double *pdYPosition);