Aegisub/FexTrackerSource/FexTracker.h

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// This file is part of FexTracker and (C) 2006 by Hajo Krabbenh<6E>t (tentacle)
// All rights reserved but the aegisub project is allowed to use it.
// The following ifdef block is the standard way of creating macros which make exporting
// from a DLL simpler. All files within this DLL are compiled with the FEXTRACKER_EXPORTS
// symbol defined on the command line. this symbol should not be defined on any project
// that uses this DLL. This way any other project whose source files include this file see
// FEXTRACKER_API functions as being imported from a DLL, wheras this DLL sees symbols
// defined with this macro as being exported.
#ifndef AEGISUB
#ifdef FEXTRACKER_EXPORTS
#define FEXTRACKER_API __declspec(dllexport)
#else
#define FEXTRACKER_API __declspec(dllimport)
#endif
#else
#define FEXTRACKER_API
#endif
class FEXTRACKER_API FexTrackerConfig
{
public:
inline FexTrackerConfig() :
FeatureNumber(0),
WindowX(3), WindowY(3),
SearchRange(15),
DetectSmoothSigma(0.9f),
EdgeDetectSigma(1.f),
MaxIterations(10),
MinDeterminant(0.01f),
MinDisplacement(0.1f),
MaxResidue(10.f),
IgnoreLightning(0),
MinDistanceSquare(100.f)
{};
int FeatureNumber;
int WindowX, WindowY; //static const int window_size = 7;
int SearchRange;
float DetectSmoothSigma; //static const float pyramid_sigma_fact = 0.9f;
float EdgeDetectSigma; //static const float grad_sigma = 1.0f;
int MaxIterations; //static const int max_iterations = 10;
float MinDeterminant; //static const float min_determinant = 0.01f;
float MinDisplacement; //static const float min_displacement = 0.1f;
float MaxResidue; //static const float max_residue = 10.0f;
bool IgnoreLightning; //static const KLT_BOOL lighting_insensitive = FALSE;
float MinDistanceSquare; //static const int mindist = 10;
//static const int min_eigenvalue = 1;
//static const float smooth_sigma_fact = 0.1f;
//static const KLT_BOOL sequentialMode = FALSE;
///* for affine mapping*/
//static const int affineConsistencyCheck = -1;
//static const int affine_window_size = 15;
//static const int affine_max_iterations = 10;
//static const float affine_max_residue = 10.0;
//static const float affine_min_displacement = 0.02f;
//static const float affine_max_displacement_differ = 1.5f;
};
typedef struct{
float x, y;
}vec2;
typedef struct{
float x, y, z;
}vec3;
class FexImgPyramid;
class FexTrackingFeature;
class FexMovement;
class FEXTRACKER_API FexTracker
{
public:
FexTracker( int sx, int sy, int nFeatures );
~FexTracker();
//config
FexTrackerConfig Cfg;
//work
void ProcessImage( float *Img, bool bFirst=0 ); //we assume grayscale image here
void ProcessingDone(); // call after last call to ProcessImage to clear temporary storage
//point -> movement
void InfluenceFeatures( int Frame, float x, float y, float off );
FexMovement* GetMovement();
//feature access
FexTrackingFeature* operator [] ( int i );
inline int GetCount(){ return nFeatures; };
inline int GetFrame(){ return CurFrame; };
inline int GetSizeX(){ return SizX; };
inline int GetSizeY(){ return SizY; };
bool bDebug;
int minFeatures;
private:
int SizX, SizY;
int PyramidSubsampling;
int PyramidMaxLevels;
FexImgPyramid* CurImg;
FexImgPyramid* NextImg;
void FindFeatures( int minFeatures );
void TrackFeatures();
bool TrackOneFeature( int lvl, vec2 op, vec2& np );
int GetEigenvalueForPoint( int px, int py );
void GetDiffForPointset( int lvl, vec2 op, vec2 np, float* diff );
void GetGradForPointset( int lvl, vec2 op, vec2 np, float* gradx, float* grady );
void CountActiveFeatures();
//result
FexTrackingFeature* lFeatures; // list of allocated features
int nFeatures; // current number of used feature slots
int nActiveFeatures; // number of features with motion data on current image
int mFeatures; // number of features allocated space for
int CurFrame;
};
FEXTRACKER_API void FexBaseResize( float* out, int newx, int newy, float* in, int sizx, int sizy );
FEXTRACKER_API void GaussKernelWidths( float sigma, int *gauss_width, int *gaussderiv_width );
FEXTRACKER_API void GaussEdgeDetect( float* Img, int sizx, int sizy, float sigma, float* GradX, float* GradY );
FEXTRACKER_API void GaussSmooth( float* Img, int sizx, int sizy, float sigma, float* Out );