
import numpy as np
from cva import destroyAllWindows, imread, imshow, waitKey




class 	UpperCAmelCase_      :


    '''simple docstring'''







    def __init__(			self      :			List[str]      ,							UpperCamelCase__      :			List[Any]      ,							UpperCamelCase__      :			int   )      ->     Union[str, Any]:







      """simple docstring"""






      __magic_name__    					=	0
      # max greyscale value for #FFFFFF
      __magic_name__    					=	int(self.get_greyscale(255      ,							255      ,							255   )   )

      if not self.min_threshold < threshold < self.max_threshold:
        __magic_name__    					=	F'''Factor value should be from 0 to {self.max_threshold}'''
        raise ValueError(UpperCamelCase__   )

      __magic_name__    					=	input_img
      __magic_name__    					=	threshold
      __magic_name__					,   __magic_name__    					=	self.input_img.shape[1], self.input_img.shape[0]

      # error table size (+4 columns and +1 row) greater than input image because of
      # lack of if statements
      __magic_name__    					=	[
          [0 for _ in range(self.height + 4   )] for __ in range(self.width + 1   )
      ]
      __magic_name__    					=	np.ones((self.width, self.height, 3)      ,							np.uinta   ) * 255
    @classmethod
    def 							_lowercase							(			cls      :			Dict      ,							UpperCamelCase__      :			int      ,							UpperCamelCase__      :			int      ,							UpperCamelCase__      :			int   )      ->     float:







      """simple docstring"""






      return 0.114 * blue + 0.587 * green + 0.2126 * red





    def 							_lowercase							(			self      :			Union[str, Any]   )      ->     None:







      """simple docstring"""






      for y in range(self.height   ):
        for x in range(self.width   ):
          __magic_name__    					=	int(self.get_greyscale(*self.input_img[y][x]   )   )
          if self.threshold > greyscale + self.error_table[y][x]:
            __magic_name__    					=	(0, 0, 0)
            __magic_name__    					=	greyscale + self.error_table[x][y]
          else:
            __magic_name__    					=	(255, 255, 255)
            __magic_name__    					=	greyscale + self.error_table[x][y] - 255
          self.error_table[y][x + 1] += int(8 / 32 * current_error   )
          self.error_table[y][x + 2] += int(4 / 32 * current_error   )
          self.error_table[y + 1][x] += int(8 / 32 * current_error   )
          self.error_table[y + 1][x + 1] += int(4 / 32 * current_error   )
          self.error_table[y + 1][x + 2] += int(2 / 32 * current_error   )
          self.error_table[y + 1][x - 1] += int(4 / 32 * current_error   )
          self.error_table[y + 1][x - 2] += int(2 / 32 * current_error   )


if __name__ == "__main__":
    # create Burke's instances with original images in greyscale
    __lowerCAmelCase      :					Dict   	=       [
        Burkes(imread('image_data/lena.jpg', 1), threshold)
        for threshold in (1, 126, 130, 140)
    ]

    for burkes in burkes_instances:
        burkes.process()

    for burkes in burkes_instances:
        imshow(
            F'''Original image with dithering threshold: {burkes.threshold}''',
            burkes.output_img,
        )

    waitKey(0)
    destroyAllWindows()



class 	UpperCAmelCase_      :


  '''simple docstring'''







  def __init__(			self      :			Tuple      ,							UpperCamelCase__      :			Dict=None   )      ->     List[str]:







    """simple docstring"""






    __magic_name__    					=	data
    __magic_name__    					=	None





  def __repr__(			self      :			Optional[int]   )      ->     Optional[int]:







    """simple docstring"""






    __magic_name__    					=	""""""
    __magic_name__    					=	self
    while temp:
      string_rep += F'''<{temp.data}> ---> '''
      __magic_name__    					=	temp.next
    string_rep += "<END>"
    return string_rep







def a__   (	A_ ):






  '''simple docstring'''





  if not elements_list:
    raise Exception("""The Elements List is empty""" )

  # Set first element as Head
  __magic_name__    					=	Node(elements_list[0] )
  __magic_name__    					=	head
  # Loop through elements from position 1
  for data in elements_list[1:]:
    __magic_name__    					=	Node(A_ )
    __magic_name__    					=	current.next
  return head


__lowerCAmelCase      :					Union[str, Any]   	=       [1, 3, 5, 32, 44, 12, 43]
print(F'''List: {list_data}''')
print('Creating Linked List from List.')
__lowerCAmelCase      :					Optional[Any]   	=       make_linked_list(list_data)
print('Linked List:')





print(linked_list)

