




import cva
import numpy as np







class  UpperCAmelCase:



	"""simple docstring"""






	def __init__(	self			, lowerCamelCase			, lowerCamelCase							)   ->     List[str]:





								"""simple docstring"""


								if k in (0.04, 0.06):
															lowercase__    :			Any     =				k
															lowercase__    :			Dict     =				window_size
								else:
															raise ValueError("invalid k value"							)

	def __str__(	self							)   ->     str:





								"""simple docstring"""


								return str(self.k							)







	def        __a      (	self			, lowerCamelCase							)   ->     tuple[cva.Mat, list[list[int]]]:





								"""simple docstring"""


								lowercase__    :			Optional[int]     =				cva.imread(a_			, 0							)
								lowercase__    :			List[Any]     =				img.shape
								lowercase__    :			list[list[int]]     =				[]
								lowercase__    :			Union[str, Any]     =				img.copy()
								lowercase__    :			Union[str, Any]     =				cva.cvtColor(a_			, cva.COLOR_GRAY2RGB							)
								lowercase__    :			int     =				np.gradient(a_							)
								lowercase__    :			Any     =				dx**2
								lowercase__    :			Dict     =				dy**2
								lowercase__    :			Tuple     =				dx * dy
								lowercase__    :			Any     =				0.04
								lowercase__    :			List[str]     =				self.window_size // 2
								for y in range(a_			, h - offset							):
															for x in range(a_			, w - offset							):
																						lowercase__    :			Any     =				ixx[
																						    y - offset : y + offset + 1, x - offset : x + offset + 1
																						].sum()
																						lowercase__    :			str     =				iyy[
																						    y - offset : y + offset + 1, x - offset : x + offset + 1
																						].sum()
																						lowercase__    :			int     =				ixy[
																						    y - offset : y + offset + 1, x - offset : x + offset + 1
																						].sum()

																						lowercase__    :			Dict     =				(wxx * wyy) - (wxy**2)
																						lowercase__    :			Optional[int]     =				wxx + wyy
																						lowercase__    :			Tuple     =				det - k * (trace**2)
																						# Can change the value
																						if r > 0.5:
																													corner_list.append([x, y, r]							)
																													color_img.itemset((y, x, 0)			, 0							)
																													color_img.itemset((y, x, 1)			, 0							)
																													color_img.itemset((y, x, 2)			, 255							)
								return color_img, corner_list


if __name__ == "__main__":
						__a    :						List[Any]						      =       HarrisCorner(0.04, 3)
						__a      ,			__a    :						Union[str, Any]						      =       edge_detect.detect('''path_to_image''')
						cva.imwrite('''detect.png''', color_img)






"""simple docstring"""






def      lowercase__ (					lowerCAmelCase__   :			str			)    ->			list[int]:



			'''simple docstring'''
			a__  :	List[str]		 =			[0 for i in range(len(lowerCAmelCase__			)			)]

			# initialize interval's left pointer and right pointer
			a__ ,	a__  :	int		 =			0, 0

			for i in range(1							,			len(lowerCAmelCase__			)			):
						# case when current index is inside the interval
						if i <= right_pointer:
									a__  :	List[Any]		 =			min(right_pointer - i + 1							,			z_result[i - left_pointer]			)
									a__  :	List[str]		 =			min_edge

						while go_next(lowerCAmelCase__							,			lowerCAmelCase__							,			lowerCAmelCase__			):
									z_result[i] += 1

						# if new index's result gives us more right interval,
						# we've to update left_pointer and right_pointer
						if i + z_result[i] - 1 > right_pointer:
									a__ ,	a__  :	str		 =			i, i + z_result[i] - 1

			return z_result






def      lowercase__ (					lowerCAmelCase__   :			int							,			lowerCAmelCase__   :			list[int]							,			lowerCAmelCase__   :			str			)    ->			bool:



			'''simple docstring'''
			return i + z_result[i] < len(lowerCAmelCase__			) and s[z_result[i]] == s[i + z_result[i]]






def      lowercase__ (					lowerCAmelCase__   :			str							,			lowerCAmelCase__   :			str			)    ->			int:



			'''simple docstring'''
			a__  :	List[Any]		 =			0
			# concatenate 'pattern' and 'input_str' and call z_function
			# with concatenated string
			a__  :	List[str]		 =			z_function(pattern + input_str			)

			for val in z_result:
						# if value is greater then length of the pattern string
						# that means this index is starting position of substring
						# which is equal to pattern string
						if val >= len(lowerCAmelCase__			):
									answer += 1

			return answer


if __name__ == "__main__":
		import doctest

		doctest.testmod()