imrotate

imrotate(img: np.ndarray, angle: float, scale: float = 1, interpolation: str | int | INTER = INTER.BILINEAR, bordertype: str | int | BORDER = BORDER.CONSTANT, bordervalue: int | tuple[int, ...] | None = None, expand: bool = True, center: tuple[int, int] | None = None) -> np.ndarray

• Description: Rotates the input image.

• Parameters

  • img (np.ndarray): The input image to be rotated.
  • angle (float): The rotation angle in degrees, counterclockwise.
  • scale (float): The scaling factor. Default is 1.
  • interpolation (str | int | INTER): Interpolation method. Available options: INTER.NEAREST, INTER.BILINEAR, INTER.CUBIC, INTER.AREA, INTER.LANCZOS4. Default is INTER.BILINEAR.
  • bordertype (Union[str, int, BORDER]): The border type. Available options include: BORDER.CONSTANT, BORDER.REPLICATE, BORDER.REFLECT, BORDER.REFLECT_101. Default is BORDER.CONSTANT.
  • bordervalue (Union[int, Tuple[int, int, int]]): The value used to fill the border. Only used when bordertype is BORDER.CONSTANT. Default is None.
  • expand (bool): Whether to expand the output image to fit the entire rotated image. Default is True.
  • center (tuple[int, int] | None): The center of rotation. None means image center.

• Returns

  • np.ndarray: The rotated image.

• Example

  import capybara as cb
  
  img = cb.imread('lena.png')
  rotate_img = cb.imrotate(img, 45, bordertype=cb.BORDER.CONSTANT, expand=True)
  
  # Resize the rotated image to the original size for visualization
  rotate_img = cb.imresize(rotate_img, [img.shape[0], img.shape[1]])