






import numpy as np
from PIL import Image


def __A       ( __lowerCAmelCase      )->    np.array:





						"""simple docstring"""



						_UpperCAmelCase   ,					_UpperCAmelCase   ,					_UpperCAmelCase							   =     rgb[:, :, 0], rgb[:, :, 1], rgb[:, :, 2]
						return 0.29_89 * r + 0.58_70 * g + 0.11_40 * b


def __A       ( __lowerCAmelCase      )->    np.array:





						"""simple docstring"""



						return (gray > 127) & (gray <= 255)


def __A       ( __lowerCAmelCase					,						__lowerCAmelCase      )->    np.array:





						"""simple docstring"""



						_UpperCAmelCase							   =     np.zeros_like(__lowerCAmelCase      )
						_UpperCAmelCase							   =     np.zeros(
						    (image.shape[0] + kernel.shape[0] - 1, image.shape[1] + kernel.shape[1] - 1)      )

						# Copy image to padded image
						_UpperCAmelCase							   =     image

						# Iterate over image & apply kernel
						for x in range(image.shape[1]      ):
												for y in range(image.shape[0]      ):
																		_UpperCAmelCase							   =     (
																		    kernel * image_padded[y : y + kernel.shape[0], x : x + kernel.shape[1]]
																		).sum()
																		_UpperCAmelCase							   =     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''')








from __future__ import annotations

import re


def __A       ( __lowerCAmelCase      )->    list[str]:





						"""simple docstring"""



						def alphanum_key(__lowerCAmelCase      ):
												return [int(__lowerCAmelCase      ) if s.isdigit() else s.lower() for s in re.split('([0-9]+)'					,						__lowerCAmelCase      )]

						return sorted(__lowerCAmelCase					,						key=__lowerCAmelCase      )


if __name__ == "__main__":
		import doctest

		doctest.testmod()
