






import numpy as np
from PIL import Image
def       a__						(  A					):
   lowercase__     ,					lowercase__     ,					lowercase__						:	Any         = rgb[:, :, 0], rgb[:, :, 1], rgb[:, :, 2]
   return 0.2_9_8_9 * r + 0.5_8_7_0 * g + 0.1_1_4_0 * b
def       a__						(  A					):
   return (gray > 127) & (gray <= 255)
def       a__						(  A		,				A					):
   lowercase__						:	int         = np.zeros_like(A					)
   lowercase__						:	List[Any]         = np.zeros(
       (image.shape[0] + kernel.shape[0] - 1, image.shape[1] + kernel.shape[1] - 1)					)

   # Copy image to padded image
   lowercase__						:	Dict         = image

   # Iterate over image & apply kernel
   for x in range(image.shape[1]					):
      for y in range(image.shape[0]					):
         lowercase__						:	Any         = (
             kernel * image_padded[y : y + kernel.shape[0], x : x + kernel.shape[1]]
         ).sum()
         lowercase__						:	Union[str, Any]         = int(summation == 5					)
   return output


# kernel to be applied
a    =       np.array([[0, 1, 0], [1, 1, 1], [0, 1, 0]])

if __name__ == "__main__":
 # read original image
 a    =       np.array(Image.open(r'..\image_data\lena.jpg'))
 # Apply erosion operation to a binary image
 a    =       erosion(grayabinary(rgbagray(image)), structuring_element)
 # Save the output image
 a    =       Image.fromarray(output).convert('RGB')
 pil_img.save('result_erosion.png')










import os
import sys
import time

from . import transposition_cipher as trans_cipher
def       a__						(  ):
   lowercase__						:	Union[str, Any]         = """Prehistoric Men.txt"""
   lowercase__						:	Optional[Any]         = """Output.txt"""
   lowercase__						:	List[str]         = int(input("""Enter key: """					)					)
   lowercase__						:	Tuple         = input("""Encrypt/Decrypt [e/d]: """					)

   if not os.path.exists(A					):
      print(F'''File {input_file} does not exist. Quitting...'''					)
      sys.exit()
   if os.path.exists(A					):
      print(F'''Overwrite {output_file}? [y/n]'''					)
      lowercase__						:	List[Any]         = input("""> """					)
      if not response.lower().startswith("""y"""					):
         sys.exit()

   lowercase__						:	str         = time.time()
   if mode.lower().startswith("""e"""					):
      with open(A					) as f:
         lowercase__						:	Optional[int]         = f.read()
      lowercase__						:	List[str]         = trans_cipher.encrypt_message(A		,				A					)
   elif mode.lower().startswith("""d"""					):
      with open(A					) as f:
         lowercase__						:	int         = f.read()
      lowercase__						:	int         = trans_cipher.decrypt_message(A		,				A					)

   with open(A		,				"""w"""					) as output_obj:
      output_obj.write(A					)

   lowercase__						:	Optional[Any]         = round(time.time() - start_time		,				2					)
   print(("""Done (""", total_time, """seconds )""")					)


if __name__ == "__main__":
 main()


