




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




class  __lowerCAmelCase							:






       def __init__( self:       Union[str, Any]							,       _lowerCAmelCase:       Tuple							,       _lowerCAmelCase:       int					):
         lowercase     :List[Any]   						=    0
         # max greyscale value for #FFFFFF
         lowercase     :Union[str, Any]   						=    int(self.get_greyscale(2_55							,       2_55							,       2_55					)					)

         if not self.min_threshold < threshold < self.max_threshold:
           lowercase     :Optional[int]   						=    F"Factor value should be from 0 to {self.max_threshold}"
           raise ValueError(_lowerCAmelCase					)

         lowercase     :int   						=    input_img
         lowercase     :List[Any]   						=    threshold
         lowercase						,     lowercase     :List[Any]   						=    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
         lowercase     :List[Any]   						=    [
             [0 for _ in range(self.height + 4					)] for __ in range(self.width + 1					)
         ]
         lowercase     :Optional[int]   						=    np.ones((self.width, self.height, 3)							,       np.uinta					) * 2_55






       @classmethod
       def        SCREAMING_SNAKE_CASE     ( cls:       Optional[int]							,       _lowerCAmelCase:       int							,       _lowerCAmelCase:       int							,       _lowerCAmelCase:       int					):
         return 0.1_14 * blue + 0.5_87 * green + 0.21_26 * red






       def        SCREAMING_SNAKE_CASE     ( self:       List[Any]					):
         for y in range(self.height					):
           for x in range(self.width					):
             lowercase     :Optional[int]   						=    int(self.get_greyscale(*self.input_img[y][x]					)					)
             if self.threshold > greyscale + self.error_table[y][x]:
               lowercase     :Tuple   						=    (0, 0, 0)
               lowercase     :List[str]   						=    greyscale + self.error_table[x][y]
             else:
               lowercase     :Optional[Any]   						=    (2_55, 2_55, 2_55)
               lowercase     :Tuple   						=    greyscale + self.error_table[x][y] - 2_55
             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
     _UpperCAmelCase						:    List[Any]      =  [
         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()









import os

from apache_beam.io.filesystems import FileSystems
from apache_beam.pipeline import Pipeline

from .logging import get_logger


_UpperCAmelCase						:    List[str]      =  2 << 20  # 2mb
_UpperCAmelCase						:    Optional[int]      =  get_logger(__name__)




class  __lowerCAmelCase							(				lowerCAmelCase):






       def        SCREAMING_SNAKE_CASE     ( self:       str					):
         lowercase     :str   						=    self._options.get_all_options().get("runner"					)
         return runner in [None, "DirectRunner", "PortableRunner"]







def    UpperCAmelCase__	(  lowerCamelCase,      lowerCamelCase,      lowerCamelCase=False ):
  lowercase     :str   						=    FileSystems
  if fs.exists(lowerCamelCase ):
    if force_upload:
      logger.info(F"Remote path already exist: {remote_file_path}. Overwriting it as force_upload=True." )
    else:
      logger.info(F"Remote path already exist: {remote_file_path}. Skipping it as force_upload=False." )
      return
  with fs.create(lowerCamelCase ) as remote_file:
    with open(lowerCamelCase,      "rb" ) as local_file:
      lowercase     :int   						=    local_file.read(lowerCamelCase )
      while chunk:
        remote_file.write(lowerCamelCase )
        lowercase     :List[Any]   						=    local_file.read(lowerCamelCase )







def    UpperCAmelCase__	(  lowerCamelCase,      lowerCamelCase,      lowerCamelCase=False ):
  lowercase     :Union[str, Any]   						=    FileSystems
  if os.path.exists(lowerCamelCase ):
    if force_download:
      logger.info(F"Local path already exist: {remote_file_path}. Overwriting it as force_upload=True." )
    else:
      logger.info(F"Local path already exist: {remote_file_path}. Skipping it as force_upload=False." )
      return
  with fs.open(lowerCamelCase ) as remote_file:
    with open(lowerCamelCase,      "wb" ) as local_file:
      lowercase     :Optional[Any]   						=    remote_file.read(lowerCamelCase )
      while chunk:
        local_file.write(lowerCamelCase )
        lowercase     :Dict   						=    remote_file.read(lowerCamelCase )



