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#ifndef __OPENCV_SHAPE_SHAPE_TRANSFORM_HPP__
#define __OPENCV_SHAPE_SHAPE_TRANSFORM_HPP__
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#include <vector>
#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"

namespace cv
{

//! @addtogroup shape
//! @{

/** @brief Abstract base class for shape transformation algorithms.
 */
class CV_EXPORTS_W ShapeTransformer : public Algorithm
{
public:
    /** @brief Estimate the transformation parameters of the current transformer algorithm, based on point matches.

    @param transformingShape Contour defining first shape.
    @param targetShape Contour defining second shape (Target).
    @param matches Standard vector of Matches between points.
     */
    CV_WRAP virtual void estimateTransformation(InputArray transformingShape, InputArray targetShape,
                                                 std::vector<DMatch>& matches) = 0;

    /** @brief Apply a transformation, given a pre-estimated transformation parameters.

    @param input Contour (set of points) to apply the transformation.
    @param output Output contour.
     */
    CV_WRAP virtual float applyTransformation(InputArray input, OutputArray output=noArray()) = 0;

    /** @brief Apply a transformation, given a pre-estimated transformation parameters, to an Image.

    @param transformingImage Input image.
    @param output Output image.
    @param flags Image interpolation method.
    @param borderMode border style.
    @param borderValue border value.
     */
    CV_WRAP virtual void warpImage(InputArray transformingImage, OutputArray output,
                                   int flags=INTER_LINEAR, int borderMode=BORDER_CONSTANT,
                                   const Scalar& borderValue=Scalar()) const = 0;
};

/***********************************************************************************/
/***********************************************************************************/

/** @brief Definition of the transformation

ocupied in the paper "Principal Warps: Thin-Plate Splines and Decomposition of Deformations", by
F.L. Bookstein (PAMI 1989). :
 */
class CV_EXPORTS_W ThinPlateSplineShapeTransformer : public ShapeTransformer
{
public:
    /** @brief Set the regularization parameter for relaxing the exact interpolation requirements of the TPS
    algorithm.

    @param beta value of the regularization parameter.
     */
    CV_WRAP virtual void setRegularizationParameter(double beta) = 0;
    CV_WRAP virtual double getRegularizationParameter() const = 0;
};

/** Complete constructor */
CV_EXPORTS_W Ptr<ThinPlateSplineShapeTransformer>
    createThinPlateSplineShapeTransformer(double regularizationParameter=0);

/***********************************************************************************/
/***********************************************************************************/

/** @brief Wrapper class for the OpenCV Affine Transformation algorithm. :
 */
class CV_EXPORTS_W AffineTransformer : public ShapeTransformer
{
public:
    CV_WRAP virtual void setFullAffine(bool fullAffine) = 0;
    CV_WRAP virtual bool getFullAffine() const = 0;
};

/** Complete constructor */
CV_EXPORTS_W Ptr<AffineTransformer> createAffineTransformer(bool fullAffine);

//! @}

} // cv
#endif