


import cva
import numpy as np


class      lowercase__	:






  def __init__(       self   :       List[Any]		,    _lowercase   :       float		,    _lowercase   :       int			):




         """simple docstring"""







         if k in (0.0_4, 0.0_6):
                UpperCAmelCase__					    =  k
                UpperCAmelCase__					    =  window_size
         else:
                raise ValueError("invalid k value"			)






  def __str__(       self   :       Any			):




         """simple docstring"""







         return str(self.k			)






  def       _UpperCAmelCase	(       self   :       List[str]		,    _lowercase   :       str			):




         """simple docstring"""







         UpperCAmelCase__					    =  cva.imread(_lowercase		,    0			)
         UpperCAmelCase__    ,      UpperCAmelCase__					    =  img.shape
         UpperCAmelCase__					    =  []
         UpperCAmelCase__					    =  img.copy()
         UpperCAmelCase__					    =  cva.cvtColor(_lowercase		,    cva.COLOR_GRAY2RGB			)
         UpperCAmelCase__    ,      UpperCAmelCase__					    =  np.gradient(_lowercase			)
         UpperCAmelCase__					    =  dx**2
         UpperCAmelCase__					    =  dy**2
         UpperCAmelCase__					    =  dx * dy
         UpperCAmelCase__					    =  0.0_4
         UpperCAmelCase__					    =  self.window_size // 2
         for y in range(_lowercase		,    h - offset			):
                for x in range(_lowercase		,    w - offset			):
                       UpperCAmelCase__					    =  ixx[
                           y - offset : y + offset + 1, x - offset : x + offset + 1
                       ].sum()
                       UpperCAmelCase__					    =  iyy[
                           y - offset : y + offset + 1, x - offset : x + offset + 1
                       ].sum()
                       UpperCAmelCase__					    =  ixy[
                           y - offset : y + offset + 1, x - offset : x + offset + 1
                       ].sum()

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











'''simple docstring'''
import numpy as np





def 			lowerCamelCase(							SCREAMING_SNAKE_CASE_     )		->		np.array:
			return 1 / (1 + np.exp(-vector     ))





def 			lowerCamelCase(							SCREAMING_SNAKE_CASE_     )		->		np.array:
			return vector * sigmoid(1.702 * vector     )


if __name__ == "__main__":
							import doctest

							doctest.testmod()




