





from cva import COLOR_BGR2GRAY, cvtColor, imread, imshow, waitKey
from numpy import array, dot, pad, ravel, uinta, zeros







def       lowerCAmelCase__(	lowercase       :    Dict   ,     lowercase       :    Optional[Any]				) ->    Any:
  __snake_case   :				str        =       image.shape
  __snake_case   :				Tuple        =       cols - block_size[1] + 1
  __snake_case   :				Union[str, Any]        =       rows - block_size[0] + 1
  __snake_case   :				Tuple        =       zeros((dst_height * dst_width, block_size[1] * block_size[0])				)
  __snake_case   :				List[str]        =       0
  for i in range(0   ,     lowercase				):
    for j in range(0   ,     lowercase				):
      __snake_case   :				Optional[Any]        =       ravel(image[i : i + block_size[0], j : j + block_size[1]]				)
      __snake_case   :				Tuple        =       window
      row += 1

  return image_array







def       lowerCAmelCase__(	lowercase       :    str   ,     lowercase       :    int				) ->    Any:
  __snake_case   :				str        =       image.shape[0], image.shape[1]
  __snake_case   :				Union[str, Any]        =       filter_kernel.shape[0]
  __snake_case   :				Optional[Any]        =       k_size // 2
  # Pads image with the edge values of array.
  __snake_case   :				Dict        =       pad(lowercase   ,     lowercase   ,     mode="edge"				)

  # im2col, turn the k_size*k_size pixels into a row and np.vstack all rows
  __snake_case   :				str        =       imacol(lowercase   ,     (k_size, k_size)				)

  #  turn the kernel into shape(k*k, 1)
  __snake_case   :				List[Any]        =       ravel(lowercase				)
  # reshape and get the dst image
  __snake_case   :				Optional[int]        =       dot(lowercase   ,     lowercase				).reshape(lowercase   ,     lowercase				)
  return dst


if __name__ == "__main__":
     # read original image
     _UpperCamelCase       = imread(R'''../image_data/lena.jpg''')
     # turn image in gray scale value
     _UpperCamelCase       = cvtColor(img, COLOR_BGR2GRAY)
     # Laplace operator
     _UpperCamelCase       = array([[0, 1, 0], [1, -4, 1], [0, 1, 0]])
     _UpperCamelCase       = img_convolve(gray, Laplace_kernel).astype(uinta)
     imshow('''Laplacian''', out)
     waitKey(0)








def       lowerCAmelCase__(	lowercase       :    str				) ->    int:
  __snake_case   :				List[str]        =       str(lowercase				).strip()
  if not oct_string:
    raise ValueError("Empty string was passed to the function"				)
  __snake_case   :				int        =       oct_string[0] == "-"
  if is_negative:
    __snake_case   :				Union[str, Any]        =       oct_string[1:]
  if not oct_string.isdigit() or not all(0 <= int(lowercase				) <= 7 for char in oct_string				):
    raise ValueError("Non-octal value was passed to the function"				)
  __snake_case   :				List[Any]        =       0
  for char in oct_string:
    __snake_case   :				Optional[Any]        =       8 * decimal_number + int(lowercase				)
  if is_negative:
    __snake_case   :				Any        =       -decimal_number
  return decimal_number


if __name__ == "__main__":
     from doctest import testmod

     testmod()

