


'''simple docstring'''






import math
import os

import cva
import numpy as np

__UpperCAmelCase    				=							255.0


def 					_snake_case   (     A ,    A       )						->    float:
							lowerCAmelCase__          =	np.mean((original - contrast) ** 2       )
							if mse == 0:
														return 100

							return 20 * math.logaa(PIXEL_MAX / math.sqrt(A       )       )


def 					_snake_case   (     )						->    None:
							lowerCAmelCase__          =	os.path.dirname(os.path.realpath(A       )       )
							# Loading images (original image and compressed image)
							lowerCAmelCase__          =	cva.imread(os.path.join(A ,    '''image_data/original_image.png'''       )       )
							lowerCAmelCase__          =	cva.imread(os.path.join(A ,    '''image_data/compressed_image.png'''       ) ,    1       )

							lowerCAmelCase__          =	cva.imread(os.path.join(A ,    '''image_data/PSNR-example-base.png'''       )       )
							lowerCAmelCase__          =	cva.imread(
							    os.path.join(A ,    '''image_data/PSNR-example-comp-10.jpg'''       ) ,    1       )

							# Value expected: 29.73dB
							print('''-- First Test --'''       )
							print(F"""PSNR value is {peak_signal_to_noise_ratio(A ,    A       )} dB"""       )

							# # Value expected: 31.53dB (Wikipedia Example)
							print('''\n-- Second Test --'''       )
							print(F"""PSNR value is {peak_signal_to_noise_ratio(A ,    A       )} dB"""       )


if __name__ == "__main__":
		main()

from math import cos, sin







def 				A__    (  lowerCamelCase  )     ->		list[list[float]]:
				UpperCamelCase_:							int		=  float(lowerCamelCase  )
				return [[scaling_factor * int(x == y  ) for x in range(2  )] for y in range(2  )]







def 				A__    (  lowerCamelCase  )     ->		list[list[float]]:
				UpperCamelCase_,      UpperCamelCase_:							Union[str, Any]		=  cos(lowerCamelCase  ), sin(lowerCamelCase  )
				return [[c, -s], [s, c]]







def 				A__    (  lowerCamelCase  )     ->		list[list[float]]:
				UpperCamelCase_,      UpperCamelCase_:							Any		=  cos(lowerCamelCase  ), sin(lowerCamelCase  )
				UpperCamelCase_:							List[Any]		=  c * s
				return [[c * c, cs], [cs, s * s]]







def 				A__    (  lowerCamelCase  )     ->		list[list[float]]:
				UpperCamelCase_,      UpperCamelCase_:							List[str]		=  cos(lowerCamelCase  ), sin(lowerCamelCase  )
				UpperCamelCase_:							int		=  c * s
				return [[2 * c - 1, 2 * cs], [2 * cs, 2 * s - 1]]


print(F"""    {scaling(5) = }""")
print(F"""  {rotation(45) = }""")
print(F"""{projection(45) = }""")





print(F"""{reflection(45) = }""")






