


'''simple docstring'''
import numpy as np
from cva import destroyAllWindows, imread, imshow, waitKey







class 					_A						:



   '''simple docstring'''






   def __init__(	self	:					int					, lowerCamelCase	:					Optional[int]					, lowerCamelCase	:					int						)->	int:
          snake_case__					:	Any          =					0
          # max greyscale value for #FFFFFF
          snake_case__					:	str          =					int(self.get_greyscale(255					, 255					, 255						)						)

          if not self.min_threshold < threshold < self.max_threshold:
                 snake_case__					:	Any          =					F"""Factor value should be from 0 to {self.max_threshold}"""
                 raise ValueError(lowerCamelCase						)

          snake_case__					:	Union[str, Any]          =					input_img
          snake_case__					:	Union[str, Any]          =					threshold
          snake_case__       ,   snake_case__					:	Optional[int]          =					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
          snake_case__					:	Optional[Any]          =					[
              [0 for _ in range(self.height + 4						)] for __ in range(self.width + 1						)
          ]
          snake_case__					:	int          =					np.ones((self.width, self.height, 3)					, np.uinta						) * 255




   @classmethod
   def   __lowerCAmelCase						(	cls	:					Union[str, Any]					, lowerCamelCase	:					int					, lowerCamelCase	:					int					, lowerCamelCase	:					int						)->	float:
          return 0.114 * blue + 0.587 * green + 0.2_126 * red




   def   __lowerCAmelCase						(	self	:					List[str]						)->	None:
          for y in range(self.height						):
                 for x in range(self.width						):
                        snake_case__					:	Any          =					int(self.get_greyscale(*self.input_img[y][x]						)						)
                        if self.threshold > greyscale + self.error_table[y][x]:
                               snake_case__					:	Tuple          =					(0, 0, 0)
                               snake_case__					:	List[str]          =					greyscale + self.error_table[x][y]
                        else:
                               snake_case__					:	int          =					(255, 255, 255)
                               snake_case__					:	Optional[Any]          =					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__  =     [
         Burkes(imread('image_data/lena.jpg', 1), threshold)
         for threshold in (1, 1_26, 1_30, 1_40)
     ]

     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()








'''simple docstring'''
import math



def 				lowerCAmelCase__	(       UpperCAmelCase     ):






       """simple docstring"""





       snake_case__					:	Tuple          =					math.log(2    ,       10     ) * number
       snake_case__					:	int          =					round((log_number - int(UpperCAmelCase     ))    ,       15     )

       return difference



def 				lowerCAmelCase__	(       UpperCAmelCase = 67_8910     ):






       """simple docstring"""





       snake_case__					:	str          =					90
       snake_case__					:	Dict          =					0

       snake_case__					:	List[str]          =					math.log(1.2_3    ,       10     )
       snake_case__					:	Optional[Any]          =					math.log(1.2_4    ,       10     )
       snake_case__					:	Any          =					0

       while position < number:
              snake_case__					:	Tuple          =					log_difference(UpperCAmelCase     )

              if difference >= upper_limit:
                     power_iterator += 93

              elif difference < lower_limit:
                     power_iterator += 196

              else:
                     snake_case__					:	Union[str, Any]          =					power_iterator
                     power_iterator += 196
                     position += 1

       return previous_power


if __name__ == "__main__":
     import doctest

     doctest.testmod()

     print(f"""{solution() = }""")




