




import numpy as np
from cva import COLOR_BGR2GRAY, cvtColor, imread, imshow, waitKey

from digital_image_processing.filters.convolve import img_convolve





def      UpperCAmelCase  (						UpperCamelCase__   )     ->     Dict:







				'''simple docstring'''


				__lowerCAmelCase					=  np.array([[-1, 0, 1], [-2, 0, 2], [-1, 0, 1]]   )
				__lowerCAmelCase					=  np.array([[1, 2, 1], [0, 0, 0], [-1, -2, -1]]   )

				__lowerCAmelCase					=  np.abs(img_convolve(_SCREAMING_SNAKE_CASE						,			_SCREAMING_SNAKE_CASE   )   )
				__lowerCAmelCase					=  np.abs(img_convolve(_SCREAMING_SNAKE_CASE						,			_SCREAMING_SNAKE_CASE   )   )
				# modify the pix within [0, 255]
				__lowerCAmelCase					=  dst_x * 2_55 / np.max(_SCREAMING_SNAKE_CASE   )
				__lowerCAmelCase					=  dst_y * 2_55 / np.max(_SCREAMING_SNAKE_CASE   )

				__lowerCAmelCase					=  np.sqrt((np.square(_SCREAMING_SNAKE_CASE   )) + (np.square(_SCREAMING_SNAKE_CASE   ))   )
				__lowerCAmelCase					=  dst_xy * 2_55 / np.max(_SCREAMING_SNAKE_CASE   )
				__lowerCAmelCase					=  dst_xy.astype(np.uinta   )

				__lowerCAmelCase					=  np.arctana(_SCREAMING_SNAKE_CASE						,			_SCREAMING_SNAKE_CASE   )
				return dst, theta


if __name__ == "__main__":
	# read original image
	__A						:		Tuple          =						imread("../image_data/lena.jpg")
	# turn image in gray scale value
	__A						:		Any          =						cvtColor(img, COLOR_BGR2GRAY)

	__A						:		Dict          =						sobel_filter(gray)

	# show result images
	imshow("sobel filter", sobel_grad)
	imshow("sobel theta", sobel_theta)
	waitKey(0)







'''simple docstring'''







from __future__ import annotations

import random
import string


class       lowerCAmelCase			:




		def __init__(					self       ,    UpperCamelCase = None   ):
								_SCREAMING_SNAKE_CASE					=			passcode or self.__passcode_creator()
								_SCREAMING_SNAKE_CASE					=			self.__make_key_list()
								_SCREAMING_SNAKE_CASE					=			self.__make_shift_key()




		def __str__(					self   ):
								return "".join(self.__passcode   )




		def      lowercase							(					self       ,    UpperCamelCase   ):
								for i in range(1       ,    len(UpperCamelCase   )       ,    2   ):
														iterlist[i] *= -1
								return iterlist




		def      lowercase							(					self   ):
								_SCREAMING_SNAKE_CASE					=			string.ascii_letters + string.digits
								_SCREAMING_SNAKE_CASE					=			[random.choice(UpperCamelCase   ) for _ in range(random.randint(10       ,    20   )   )]
								return password




		def      lowercase							(					self   ):
								_SCREAMING_SNAKE_CASE					=			(
								    string.ascii_letters + string.digits + string.punctuation + " \t\n"
								)

								_SCREAMING_SNAKE_CASE					=			[]

								# creates points known as breakpoints to break the key_list_options at those
								# points and pivot each substring
								_SCREAMING_SNAKE_CASE					=			sorted(set(self.__passcode   )   )
								_SCREAMING_SNAKE_CASE					=			[]

								# algorithm for creating a new shuffled list, keys_l, out of key_list_options
								for i in key_list_options:
														temp_list.extend(UpperCamelCase   )

														# checking breakpoints at which to pivot temporary sublist and add it into
														# keys_l
														if i in breakpoints or i == key_list_options[-1]:
																				keys_l.extend(temp_list[::-1]   )
																				temp_list.clear()

        # returning a shuffled keys_l to prevent brute force guessing of shift key
								return keys_l




		def      lowercase							(					self   ):
								_SCREAMING_SNAKE_CASE					=			sum(self.__neg_pos([ord(UpperCamelCase   ) for x in self.__passcode]   )   )
								return num if num > 0 else len(self.__passcode   )




		def      lowercase							(					self       ,    UpperCamelCase   ):
								_SCREAMING_SNAKE_CASE					=			""

								# decoding shift like Caesar cipher algorithm implementing negative shift or
								# reverse shift or left shift
								for i in encoded_message:
														_SCREAMING_SNAKE_CASE					=			self.__key_list.index(UpperCamelCase   )
														decoded_message += self.__key_list[
														    (position - self.__shift_key) % -len(self.__key_list   )
														]

								return decoded_message




		def      lowercase							(					self       ,    UpperCamelCase   ):
								_SCREAMING_SNAKE_CASE					=			""

								# encoding shift like Caesar cipher algorithm implementing positive shift or
								# forward shift or right shift
								for i in plaintext:
														_SCREAMING_SNAKE_CASE					=			self.__key_list.index(UpperCamelCase   )
														encoded_message += self.__key_list[
														    (position + self.__shift_key) % len(self.__key_list   )
														]

								return encoded_message



def       _a		(						_SCREAMING_SNAKE_CASE		: str = "Hello, this is a modified Caesar cipher"	):
						_SCREAMING_SNAKE_CASE					=			ShuffledShiftCipher()
						return cipa.decrypt(cipa.encrypt(_SCREAMING_SNAKE_CASE	)	)


if __name__ == "__main__":
						import doctest

						doctest.testmod()