




'''simple docstring'''







import math
import os

import cva
import numpy as np

A					       =255.0





def 		snake_case_				(_a      :				float       ,  _a      :				float	):
    UpperCAmelCase     			=						np.mean((original - contrast) ** 2	)
    if mse == 0:
        return 1_0_0

    return 2_0 * math.logaa(PIXEL_MAX / math.sqrt(_a	)	)





def 		snake_case_				():
    UpperCAmelCase     			=						os.path.dirname(os.path.realpath(_a	)	)
    # Loading images (original image and compressed image)
    UpperCAmelCase     			=						cva.imread(os.path.join(_a       ,  '''image_data/original_image.png'''	)	)
    UpperCAmelCase     			=						cva.imread(os.path.join(_a       ,  '''image_data/compressed_image.png'''	)       ,  1	)

    UpperCAmelCase     			=						cva.imread(os.path.join(_a       ,  '''image_data/PSNR-example-base.png'''	)	)
    UpperCAmelCase     			=						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()










'''simple docstring'''







A					       =[[0, 1, 1], [0, 0, 1], [1, 0, 0]]


class      _a    :
       def __init__(      self		:      Optional[int]  ,							lowercase		:      str							):



           '''simple docstring'''

           UpperCAmelCase     			=						name
           UpperCAmelCase     			=						[]
           UpperCAmelCase     			=						[]
       def        A (      self		:      Union[str, Any]  ,							lowercase		:      int							):



           '''simple docstring'''

           self.inbound.append(lowercase							)
       def        A (      self		:      List[str]  ,							lowercase		:      Optional[Any]							):



           '''simple docstring'''

           self.outbound.append(lowercase							)







       def __repr__(      self		:      Any							):



           '''simple docstring'''

           return f"<node={self.name} inbound={self.inbound} outbound={self.outbound}>"






def 		snake_case_				(_a      :				str       ,  _a      :				str=3       ,  _a      :				Any=0.85	):
    UpperCAmelCase     			=						{}
    for node in nodes:
        UpperCAmelCase     			=						1

    UpperCAmelCase     			=						{}
    for node in nodes:
        UpperCAmelCase     			=						len(node.outbound	)

    for i in range(_a	):
        print(F"======= Iteration {i + 1} ======="	)
        for _, node in enumerate(_a	):
            UpperCAmelCase     			=						(1 - d) + d * sum(
                ranks[ib] / outbounds[ib] for ib in node.inbound	)
        print(_a	)





def 		snake_case_				():
    UpperCAmelCase     			=						list(input('''Enter Names of the Nodes: '''	).split()	)

    UpperCAmelCase     			=						[Node(_a	) for name in names]

    for ri, row in enumerate(_a	):
        for ci, col in enumerate(_a	):
            if col == 1:
                nodes[ci].add_inbound(names[ri]	)
                nodes[ri].add_outbound(names[ci]	)

    print('''======= Nodes ======='''	)
    for node in nodes:
        print(_a	)

    page_rank(_a	)


if __name__ == "__main__":
   main()




