



"""simple docstring"""






import math
import sys

import cva
import numpy as np






def 			snake_case_    ( A_   :						np.ndarray,							A_   :						float		):


       '''simple docstring'''





       _lowerCamelCase		:							Dict            =					math.sqrt(A_		)
       _lowerCamelCase		:							Dict            =					1 / (sigma * math.sqrt(2 * math.pi		))
       return cons * np.exp(-((img / sigma) ** 2) * 0.5		)






def 			snake_case_    ( A_   :						np.ndarray,							A_   :						int,							A_   :						int,							A_   :						int		):


       '''simple docstring'''





       _lowerCamelCase		:							int            =					kernel_size // 2
       return img[x - half : x + half + 1, y - half : y + half + 1]






def 			snake_case_    ( A_   :						int,							A_   :						float		):


       '''simple docstring'''





       _lowerCamelCase		:							List[str]            =					np.zeros((kernel_size, kernel_size)		)
       for i in range(0,							A_		):
              for j in range(0,							A_		):
                     _lowerCamelCase		:							Optional[int]            =					math.sqrt(
                         abs(i - kernel_size // 2		) ** 2 + abs(j - kernel_size // 2		) ** 2		)
       return vec_gaussian(A_,							A_		)






def 			snake_case_    ( A_   :						np.ndarray,							A_   :						float,							A_   :						float,							A_   :						int,							):


       '''simple docstring'''





       _lowerCamelCase		:							str            =					np.zeros(img.shape		)
       _lowerCamelCase		:							List[str]            =					get_gauss_kernel(A_,							A_		)
       _lowerCamelCase     ,       _lowerCamelCase		:							str            =					img.shape
       for i in range(kernel_size // 2,							size_x - kernel_size // 2		):
              for j in range(kernel_size // 2,							size_y - kernel_size // 2		):
                     _lowerCamelCase		:							List[str]            =					get_slice(A_,							A_,							A_,							A_		)
                     _lowerCamelCase		:							Optional[int]            =					img_s - img_s[kernel_size // 2, kernel_size // 2]
                     _lowerCamelCase		:							List[Any]            =					vec_gaussian(A_,							A_		)
                     _lowerCamelCase		:							Dict            =					np.multiply(A_,							A_		)
                     _lowerCamelCase		:							List[Any]            =					np.multiply(A_,							A_		)
                     _lowerCamelCase		:							int            =					np.sum(A_		) / np.sum(A_		)
                     _lowerCamelCase		:							Tuple            =					val
       return imga






def 			snake_case_    ( A_   :						list		):


       '''simple docstring'''





       _lowerCamelCase		:							int            =					args[1] if args[1:] else '''../image_data/lena.jpg'''
       _lowerCamelCase		:							Optional[int]            =					float(args[2]		) if args[2:] else 1.0
       _lowerCamelCase		:							int            =					float(args[3]		) if args[3:] else 1.0
       if args[4:]:
              _lowerCamelCase		:							Any            =					int(args[4]		)
              _lowerCamelCase		:							Optional[int]            =					kernel_size + abs(kernel_size % 2 - 1		)
       else:
              _lowerCamelCase		:							List[str]            =					5
       return filename, spatial_variance, intensity_variance, kernel_size


if __name__ == "__main__":
   lowerCAmelCase__       ,    lowerCAmelCase__       ,    lowerCAmelCase__       ,    lowerCAmelCase__              =							parse_args(sys.argv)
   lowerCAmelCase__              =							cva.imread(filename, 0)
   cva.imshow('''input image''', img)

   lowerCAmelCase__              =							img / 255
   lowerCAmelCase__              =							out.astype('''float32''')
   lowerCAmelCase__              =							bilateral_filter(out, spatial_variance, intensity_variance, kernel_size)
   lowerCAmelCase__              =							out * 255
   lowerCAmelCase__              =							np.uinta(out)
   cva.imshow('''output image''', out)
   cva.waitKey(0)
   cva.destroyAllWindows()








def    UpperCAmelCase_				( __UpperCAmelCase		:      list     ,     __UpperCAmelCase		:      int     ,     __UpperCAmelCase		:      int = 0     ,     __UpperCAmelCase		:      int = 0				)   ->					int:
      SCREAMING_SNAKE_CASE_      		=     right or len(__UpperCAmelCase				) - 1
      if left > right:
            return -1
      elif list_data[left] == key:
            return left
      elif list_data[right] == key:
            return right
      else:
            return search(__UpperCAmelCase     ,     __UpperCAmelCase     ,     left + 1     ,     right - 1				)


if __name__ == "__main__":
   import doctest

   doctest.testmod()