





import cva
import numpy as np

from digital_image_processing.filters.convolve import img_convolve
from digital_image_processing.filters.sobel_filter import sobel_filter

__lowercase													=			180


def 					__SCREAMING_SNAKE_CASE  (							__lowercase:		str     ,							__lowercase:		Any):



  '''simple docstring'''






  __lowerCAmelCase			=				k_size // 2
  __lowerCAmelCase	,						__lowerCAmelCase			=				np.mgrid[0 - center : k_size - center, 0 - center : k_size - center]
  __lowerCAmelCase			=				(
      1
      / (2 * np.pi * sigma)
      * np.exp(-(np.square(__lowercase) + np.square(__lowercase)) / (2 * np.square(__lowercase)))
  )
  return g


def 					__SCREAMING_SNAKE_CASE  (							__lowercase:		Tuple     ,							__lowercase:		Optional[int]     ,							__lowercase:		Union[str, Any]):



  '''simple docstring'''






  __lowerCAmelCase			=				np.zeros(__lowercase)

  for row in range(1     ,							image_shape[0] - 1):
    for col in range(1     ,							image_shape[1] - 1):
      __lowerCAmelCase			=				gradient_direction[row, col]

      if (
          0 <= direction < PI / 8
          or 15 * PI / 8 <= direction <= 2 * PI
          or 7 * PI / 8 <= direction <= 9 * PI / 8
      ):
        __lowerCAmelCase			=				sobel_grad[row, col - 1]
        __lowerCAmelCase			=				sobel_grad[row, col + 1]
        if sobel_grad[row, col] >= w and sobel_grad[row, col] >= e:
          __lowerCAmelCase			=				sobel_grad[row, col]

      elif (
          PI / 8 <= direction < 3 * PI / 8
          or 9 * PI / 8 <= direction < 11 * PI / 8
      ):
        __lowerCAmelCase			=				sobel_grad[row + 1, col - 1]
        __lowerCAmelCase			=				sobel_grad[row - 1, col + 1]
        if sobel_grad[row, col] >= sw and sobel_grad[row, col] >= ne:
          __lowerCAmelCase			=				sobel_grad[row, col]

      elif (
          3 * PI / 8 <= direction < 5 * PI / 8
          or 11 * PI / 8 <= direction < 13 * PI / 8
      ):
        __lowerCAmelCase			=				sobel_grad[row - 1, col]
        __lowerCAmelCase			=				sobel_grad[row + 1, col]
        if sobel_grad[row, col] >= n and sobel_grad[row, col] >= s:
          __lowerCAmelCase			=				sobel_grad[row, col]

      elif (
          5 * PI / 8 <= direction < 7 * PI / 8
          or 13 * PI / 8 <= direction < 15 * PI / 8
      ):
        __lowerCAmelCase			=				sobel_grad[row - 1, col - 1]
        __lowerCAmelCase			=				sobel_grad[row + 1, col + 1]
        if sobel_grad[row, col] >= nw and sobel_grad[row, col] >= se:
          __lowerCAmelCase			=				sobel_grad[row, col]

  return destination


def 					__SCREAMING_SNAKE_CASE  (							__lowercase:		List[str]     ,							__lowercase:		Union[str, Any]     ,							__lowercase:		Any     ,							__lowercase:		int     ,							__lowercase:		Tuple     ,							__lowercase:		List[Any]):



  '''simple docstring'''






  for row in range(1     ,							image_shape[0] - 1):
    for col in range(1     ,							image_shape[1] - 1):
      if destination[row, col] >= threshold_high:
        __lowerCAmelCase			=				strong
      elif destination[row, col] <= threshold_low:
        __lowerCAmelCase			=				0
      else:
        __lowerCAmelCase			=				weak


def 					__SCREAMING_SNAKE_CASE  (							__lowercase:		List[str]     ,							__lowercase:		Dict     ,							__lowercase:		List[Any]     ,							__lowercase:		List[Any]):



  '''simple docstring'''






  for row in range(1     ,							image_shape[0]):
    for col in range(1     ,							image_shape[1]):
      if destination[row, col] == weak:
        if 2_55 in (
            destination[row, col + 1],
            destination[row, col - 1],
            destination[row - 1, col],
            destination[row + 1, col],
            destination[row - 1, col - 1],
            destination[row + 1, col - 1],
            destination[row - 1, col + 1],
            destination[row + 1, col + 1],
        ):
          __lowerCAmelCase			=				strong
        else:
          __lowerCAmelCase			=				0


def 					__SCREAMING_SNAKE_CASE  (							__lowercase:		Optional[Any]     ,							__lowercase:		str=15     ,							__lowercase:		Union[str, Any]=30     ,							__lowercase:		Tuple=1_28     ,							__lowercase:		Any=2_55):



  '''simple docstring'''






  __lowerCAmelCase			=				img_convolve(__lowercase     ,							gen_gaussian_kernel(9     ,							sigma=1.4))
  # get the gradient and degree by sobel_filter
  __lowerCAmelCase	,						__lowerCAmelCase			=				sobel_filter(__lowercase)
  __lowerCAmelCase			=				PI + np.radadeg(__lowercase)

  __lowerCAmelCase			=				suppress_non_maximum(image.shape     ,							__lowercase     ,							__lowercase)

  detect_high_low_threshold(
      image.shape     ,							__lowercase     ,							__lowercase     ,							__lowercase     ,							__lowercase     ,							__lowercase)

  track_edge(image.shape     ,							__lowercase     ,							__lowercase     ,							__lowercase)

  return destination


if __name__ == "__main__":
      # read original image in gray mode
      __lowercase													=			cva.imread(R"""../image_data/lena.jpg""", 0)
      # canny edge detection
      __lowercase													=			canny(lena)
      cva.imshow("""canny""", canny_destination)
      cva.waitKey(0)







class   __snake_case				:






    '''simple docstring'''





    def __init__(   self						:		Any							):

      """simple docstring"""





      __lowerCAmelCase			=				{}
      # indexmap keys are an index and it's values are the number at that index
      __lowerCAmelCase			=				{}





    def 	A		(   self						:		List[Any]			,						snake_case						:		list | str | range			,						snake_case						:		int							):

      """simple docstring"""





      if isinstance(snake_case			,						(range, str)							):
        __lowerCAmelCase			=				list(snake_case							)
      elif not isinstance(snake_case			,						snake_case							):
        raise TypeError(
            '''binary_search_delete() only accepts either a list, range or str'''							)

      __lowerCAmelCase			=				0
      __lowerCAmelCase			=				len(snake_case							) - 1

      while low <= high:
        __lowerCAmelCase			=				(low + high) // 2
        if array[mid] == item:
          array.pop(snake_case							)
          return array
        elif array[mid] < item:
          __lowerCAmelCase			=				mid + 1
        else:
          __lowerCAmelCase			=				mid - 1
      raise ValueError(
          '''Either the item is not in the array or the array was unsorted'''							)





    def 	A		(   self						:		Tuple			,						snake_case						:		list | str | range			,						snake_case						:		int							):

      """simple docstring"""





      if isinstance(snake_case			,						(range, str)							):
        __lowerCAmelCase			=				list(snake_case							)
      elif not isinstance(snake_case			,						snake_case							):
        raise TypeError(
            '''binary_search_insert() only accepts either a list, range or str'''							)

      __lowerCAmelCase			=				0
      __lowerCAmelCase			=				len(snake_case							) - 1

      while low <= high:
        __lowerCAmelCase			=				(low + high) // 2
        if array[mid] == index:
          # If the item already exists in the array,
          # insert it after the existing item
          array.insert(mid + 1			,						snake_case							)
          return array
        elif array[mid] < index:
          __lowerCAmelCase			=				mid + 1
        else:
          __lowerCAmelCase			=				mid - 1

        # If the item doesn't exist in the array, insert it at the appropriate position
      array.insert(snake_case			,						snake_case							)
      return array





    def 	A		(   self						:		Tuple			,						snake_case						:		int			,						snake_case						:		int							):

      """simple docstring"""





      if index in self.indexmap:
        __lowerCAmelCase			=				self.indexmap[index]
        if len(self.numbermap[n]							) == 1:
          del self.numbermap[n]
        else:
          __lowerCAmelCase			=				self.binary_search_delete(self.numbermap[n]			,						snake_case							)

        # Set new index
      __lowerCAmelCase			=				number

      # Number not seen before or empty so insert number value
      if number not in self.numbermap:
        __lowerCAmelCase			=				[index]

      # Here we need to perform a binary search insertion in order to insert
      # The item in the correct place
      else:
        __lowerCAmelCase			=				self.binary_search_insert(
            self.numbermap[number]			,						snake_case							)





    def 	A		(   self						:		List[str]			,						snake_case						:		int							):

      """simple docstring"""





      return self.numbermap.get(snake_case			,						[-1]							)[0]


if __name__ == "__main__":
      import doctest

      doctest.testmod()
