motion_core.hpp

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#ifndef OPENCV_VIDEOSTAB_MOTION_CORE_HPP




#define OPENCV_VIDEOSTAB_MOTION_CORE_HPP








#include <cmath>




#include "opencv2/core.hpp"








namespace

cv



{



namespace
videostab


{











enum
MotionModel



{



MM_TRANSLATION = 0,



MM_TRANSLATION_AND_SCALE = 1,



MM_ROTATION = 2,



MM_RIGID = 3,



MM_SIMILARITY = 4,



MM_AFFINE = 5,



MM_HOMOGRAPHY = 6,



MM_UNKNOWN = 7


};







struct
CV_EXPORTS
RansacParams



{



int
size;




float
thresh;




float
eps;




float
prob;








RansacParams() : size(0), thresh(0), eps(0), prob(0) {}



RansacParams(int
size,
float
thresh,
float
eps,
float
prob);







int
niters()
const





{



return
static_cast<
int
>(



std::ceil(std::log(1 - prob) /
std::log(1 -
std::pow(1 - eps, size))));



}







static
RansacParams
default2dMotion(MotionModel
model)



{



CV_Assert(model < MM_UNKNOWN);



if
(model == MM_TRANSLATION)



return
RansacParams(1, 0.5f, 0.5f, 0.99f);



if
(model == MM_TRANSLATION_AND_SCALE)



return
RansacParams(2, 0.5f, 0.5f, 0.99f);



if
(model == MM_ROTATION)



return
RansacParams(1, 0.5f, 0.5f, 0.99f);



if
(model == MM_RIGID)



return
RansacParams(2, 0.5f, 0.5f, 0.99f);



if
(model == MM_SIMILARITY)



return
RansacParams(2, 0.5f, 0.5f, 0.99f);



if
(model == MM_AFFINE)



return
RansacParams(3, 0.5f, 0.5f, 0.99f);



return
RansacParams(4, 0.5f, 0.5f, 0.99f);



}


};







inline
RansacParams::RansacParams(int
_size,
float
_thresh,
float
_eps,
float
_prob)



: size(_size), thresh(_thresh), eps(_eps), prob(_prob) {}










}
// namespace videostab



}
// namespace cv








#endif