



from cva import COLOR_BGR2GRAY, cvtColor, imread, imshow, waitKey
from numpy import array, dot, pad, ravel, uinta, zeros
def 						snake_case__							(       __lowercase				,  __lowercase							)		->		int:







						"""simple docstring"""

						A__     ,							A__						:				Union[str, Any]         =			image.shape
						A__						:				Dict         =			cols - block_size[1] + 1
						A__						:				Tuple         =			rows - block_size[0] + 1
						A__						:				Optional[Any]         =			zeros((dst_height * dst_width, block_size[1] * block_size[0])							)
						A__						:				str         =			0
						for i in range(0				,  __lowercase							):
												for j in range(0				,  __lowercase							):
																		A__						:				str         =			ravel(image[i : i + block_size[0], j : j + block_size[1]]							)
																		A__						:				int         =			window
																		row += 1

						return image_array
def 						snake_case__							(       __lowercase				,  __lowercase							)		->		Dict:







						"""simple docstring"""

						A__     ,							A__						:				int         =			image.shape[0], image.shape[1]
						A__						:				List[Any]         =			filter_kernel.shape[0]
						A__						:				str         =			k_size // 2
						# Pads image with the edge values of array.
						A__						:				List[str]         =			pad(__lowercase				,  __lowercase				,  mode="edge"							)

						# im2col, turn the k_size*k_size pixels into a row and np.vstack all rows
						A__						:				List[str]         =			imacol(__lowercase				,  (k_size, k_size)							)

						#  turn the kernel into shape(k*k, 1)
						A__						:				Union[str, Any]         =			ravel(__lowercase							)
						# reshape and get the dst image
						A__						:				Dict         =			dot(__lowercase				,  __lowercase							).reshape(__lowercase				,  __lowercase							)
						return dst


if __name__ == "__main__":
		# read original image
		snake_case     :    Optional[int]						=    imread(R'../image_data/lena.jpg')
		# turn image in gray scale value
		snake_case     :    Dict						=    cvtColor(img, COLOR_BGR2GRAY)
		# Laplace operator
		snake_case     :    Union[str, Any]						=    array([[0, 1, 0], [1, -4, 1], [0, 1, 0]])
		snake_case     :    Any						=    img_convolve(gray, Laplace_kernel).astype(uinta)
		imshow('Laplacian', out)
		waitKey(0)




def 						snake_case__							(       __lowercase							)		->		int:







						"""simple docstring"""

						A__						:				Any         =			0
						for plain_chr in plain_text:
												A__						:				List[str]         =			(
												    ord(__lowercase							) + (hash_value << 6) + (hash_value << 1_6) - hash_value
												)
						return hash_value