class cv::detail::AffineWarper
Overview
Affine warper that uses rotations and translations. More…
#include <warpers.hpp> class AffineWarper: public cv::detail::PlaneWarper { public: // construction AffineWarper(float scale = 1.f); // methods virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, OutputArray xmap, OutputArray ymap ); virtual Point warp( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, OutputArray dst ); virtual Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R ); virtual Rect warpRoi( Size src_size, InputArray K, InputArray R ); protected: // methods void getRTfromHomogeneous( InputArray H, Mat& R, Mat& T ); };
Inherited Members
public: // methods virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, OutputArray xmap, OutputArray ymap ) = 0; virtual float getScale() const; virtual void setScale(float); virtual Point warp( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, OutputArray dst ) = 0; virtual void warpBackward( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, Size dst_size, OutputArray dst ) = 0; virtual Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R ) = 0; virtual Rect warpRoi( Size src_size, InputArray K, InputArray R ) = 0; virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, OutputArray xmap, OutputArray ymap ); virtual float getScale() const; virtual void setScale(float val); virtual Point warp( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, OutputArray dst ); virtual void warpBackward( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, Size dst_size, OutputArray dst ); virtual Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R ); virtual Rect warpRoi( Size src_size, InputArray K, InputArray R ); virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, InputArray T, OutputArray xmap, OutputArray ymap ); virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, OutputArray xmap, OutputArray ymap ); virtual Point warp( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, OutputArray dst ); virtual Point warp( InputArray src, InputArray K, InputArray R, InputArray T, int interp_mode, int border_mode, OutputArray dst ); virtual Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R ); Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R, InputArray T ); virtual Rect warpRoi( Size src_size, InputArray K, InputArray R ); Rect warpRoi( Size src_size, InputArray K, InputArray R, InputArray T ); protected: // fields P projector_; // methods virtual void detectResultRoi( Size src_size, Point& dst_tl, Point& dst_br ); void detectResultRoiByBorder( Size src_size, Point& dst_tl, Point& dst_br ); virtual void detectResultRoi( Size src_size, Point& dst_tl, Point& dst_br );
Detailed Documentation
Affine warper that uses rotations and translations.
Uses affine transformation in homogeneous coordinates to represent both rotation and translation in camera rotation matrix.
Construction
AffineWarper(float scale = 1.f)
Construct an instance of the affine warper class.
Parameters:
| scale | Projected image scale multiplier |
Methods
virtual Rect buildMaps( Size src_size, InputArray K, InputArray R, OutputArray xmap, OutputArray ymap )
Builds the projection maps according to the given camera data.
Parameters:
| src_size | Source image size |
| K | Camera intrinsic parameters |
| R | Camera rotation matrix |
| xmap | Projection map for the x axis |
| ymap | Projection map for the y axis |
Returns:
Projected image minimum bounding box
virtual Point warp( InputArray src, InputArray K, InputArray R, int interp_mode, int border_mode, OutputArray dst )
Projects the image.
Parameters:
| src | Source image |
| K | Camera intrinsic parameters |
| R | Camera rotation matrix |
| interp_mode | Interpolation mode |
| border_mode | Border extrapolation mode |
| dst | Projected image |
Returns:
Project image top-left corner
virtual Point2f warpPoint( const Point2f& pt, InputArray K, InputArray R )
Projects the image point.
Parameters:
| pt | Source point |
| K | Camera intrinsic parameters |
| R | Camera rotation matrix |
Returns:
Projected point
virtual Rect warpRoi( Size src_size, InputArray K, InputArray R )
Parameters:
| src_size | Source image bounding box |
| K | Camera intrinsic parameters |
| R | Camera rotation matrix |
Returns:
Projected image minimum bounding box
void getRTfromHomogeneous( InputArray H, Mat& R, Mat& T )
Extracts rotation and translation matrices from matrix H representing affine transformation in homogeneous coordinates.