Distortion enum 
Enum of built-in distortion names.
ts
enum Distortion {
  AFFINE = "Affine",
  AFFINE_PROJECTION = "AffineProjection",
  PERSPECTIVE = "Perspective",
  PERSPECTIVE_PROJECTION = "PerspectiveProjection",
  ARC = "Arc",
  POLYNOMIAL = "Polynomial",
}Distortion descriptions 
AFFINE 
Affine distortion using control points.
AFFINE_PROJECTION 
Affine distortion using forward affine matrix.
PERSPECTIVE 
Perspective distortion using control points.
PERSPECTIVE_PROJECTION 
Perspective distortion using forward perspective matrix.
