



import cva
import numpy as np







class  snake_case_     :
					def __init__(   self     :Tuple    ,__snake_case     :float    ,__snake_case     :int   )      ->					List[str]:

												if k in (0.04, 0.06):
																			a__    =  k
																			a__    =  window_size
												else:
																			raise ValueError('invalid k value'   )
					def __str__(   self     :Optional[int]   )      ->					str:
												return str(self.k   )



					def 				lowerCamelCase__(   self     :Union[str, Any]    ,__snake_case     :str   )      ->					tuple[cva.Mat, list[list[int]]]:
												a__    =  cva.imread(__snake_case    ,0   )
												a__   ,      a__    =  img.shape
												a__    =  []
												a__    =  img.copy()
												a__    =  cva.cvtColor(__snake_case    ,cva.COLOR_GRAY2RGB   )
												a__   ,      a__    =  np.gradient(__snake_case   )
												a__    =  dx**2
												a__    =  dy**2
												a__    =  dx * dy
												a__    =  0.04
												a__    =  self.window_size // 2
												for y in range(__snake_case    ,h - offset   ):
																			for x in range(__snake_case    ,w - offset   ):
																										a__    =  ixx[
																										    y - offset : y + offset + 1, x - offset : x + offset + 1
																										].sum()
																										a__    =  iyy[
																										    y - offset : y + offset + 1, x - offset : x + offset + 1
																										].sum()
																										a__    =  ixy[
																										    y - offset : y + offset + 1, x - offset : x + offset + 1
																										].sum()

																										a__    =  (wxx * wyy) - (wxy**2)
																										a__    =  wxx + wyy
																										a__    =  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)    ,2_55   )
												return color_img, corner_list


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








from math import pi






def 							__lowercase     (				__lowerCAmelCase							:       int      ,					__lowerCAmelCase							:       int     ):
							return 2 * pi * radius * (angle / 3_6_0)


if __name__ == "__main__":
						print(arc_length(90, 10))




