'''simple docstring'''




import cva
import numpy as np






class 							a__:


			'''simple docstring'''






			def __init__(  self			,       __lowerCAmelCase			,       __lowerCAmelCase):




					"""simple docstring"""


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



			def __str__(  self):




					"""simple docstring"""


					return str(self.k)







			def 				a_			(  self			,       __lowerCAmelCase):




					"""simple docstring"""


					lowerCAmelCase     =    cva.imread(__lowerCAmelCase			,       0)
					lowerCAmelCase   ,	lowerCAmelCase     =    img.shape
					lowerCAmelCase     =    []
					lowerCAmelCase     =    img.copy()
					lowerCAmelCase     =    cva.cvtColor(__lowerCAmelCase			,       cva.COLOR_GRAY2RGB)
					lowerCAmelCase   ,	lowerCAmelCase     =    np.gradient(__lowerCAmelCase)
					lowerCAmelCase     =    dx**2
					lowerCAmelCase     =    dy**2
					lowerCAmelCase     =    dx * dy
					lowerCAmelCase     =    0.04
					lowerCAmelCase     =    self.window_size // 2
					for y in range(__lowerCAmelCase			,       h - offset):
							for x in range(__lowerCAmelCase			,       w - offset):
									lowerCAmelCase     =    ixx[
									    y - offset : y + offset + 1, x - offset : x + offset + 1
									].sum()
									lowerCAmelCase     =    iyy[
									    y - offset : y + offset + 1, x - offset : x + offset + 1
									].sum()
									lowerCAmelCase     =    ixy[
									    y - offset : y + offset + 1, x - offset : x + offset + 1
									].sum()

									lowerCAmelCase     =    (wxx * wyy) - (wxy**2)
									lowerCAmelCase     =    wxx + wyy
									lowerCAmelCase     =    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__":
						__lowercase        =    HarrisCorner(0.04, 3)
						__lowercase       ,	__lowercase        =    edge_detect.detect('''path_to_image''')
						cva.imwrite('''detect.png''', color_img)





'''simple docstring'''




from functools import lru_cache






@lru_cache
def 							snake_case__				(     _A:   int					)       ->      int:

		'''simple docstring'''


		if num < 0:
				raise ValueError("""Number should not be negative."""					)

		return 1 if num in (0, 1) else num * factorial(num - 1					)


if __name__ == "__main__":
						import doctest

						doctest.testmod()




