Results from using different imread() functions

imread

In [1]: from skimage.io import imread as skimage_imread

In [2]: from matplotlib.pyplot import imread as plt_imread

In [3]: from scipy.ndimage import imread as scipy_imread

In [4]: skimage_imread('bulk_water_000.png')
Out[4]:
array([[[146, 125,  54, 255],
        [146, 125,  54, 255],
        [146, 125,  56, 255],
        ...,
        [140, 120,  55, 255],
        [141, 120,  59, 255],
        [142, 121,  60, 255]],

       [[146, 125,  54, 255],
        [146, 125,  54, 255],
        [146, 125,  56, 255],
        ...,
        [140, 120,  55, 255],
        [142, 121,  60, 255],
        [142, 121,  60, 255]],

       [[146, 125,  56, 255],
        [146, 125,  56, 255],
        [146, 124,  58, 255],
        ...,
        [141, 121,  56, 255],
        [143, 123,  59, 255],
        [144, 124,  60, 255]],

       ...,
       [[146, 125,  66, 255],
        [147, 126,  67, 255],
        [146, 125,  64, 255],
        ...,
        [129, 108,  37, 255],
        [120,  98,  32, 255],
        [119,  97,  31, 255]],

       [[146, 125,  64, 255],
        [146, 125,  64, 255],
        [145, 125,  61, 255],
        ...,
        [137, 116,  47, 255],
        [129, 109,  44, 255],
        [126, 106,  41, 255]],

       [[146, 125,  64, 255],
        [146, 125,  64, 255],
        [145, 125,  61, 255],
        ...,
        [145, 124,  55, 255],
        [139, 119,  54, 255],
        [137, 117,  52, 255]]], dtype=uint8)

In [5]: plt_imread('bulk_water_000.png')
Out[5]:
array([[[ 0.57254905,  0.49019608,  0.21176471,  1.        ],
        [ 0.57254905,  0.49019608,  0.21176471,  1.        ],
        [ 0.57254905,  0.49019608,  0.21960784,  1.        ],
        ...,
        [ 0.54901963,  0.47058824,  0.21568628,  1.        ],
        [ 0.5529412 ,  0.47058824,  0.23137255,  1.        ],
        [ 0.55686277,  0.47450981,  0.23529412,  1.        ]],

       [[ 0.57254905,  0.49019608,  0.21176471,  1.        ],
        [ 0.57254905,  0.49019608,  0.21176471,  1.        ],
        [ 0.57254905,  0.49019608,  0.21960784,  1.        ],
        ...,
        [ 0.54901963,  0.47058824,  0.21568628,  1.        ],
        [ 0.55686277,  0.47450981,  0.23529412,  1.        ],
        [ 0.55686277,  0.47450981,  0.23529412,  1.        ]],

       [[ 0.57254905,  0.49019608,  0.21960784,  1.        ],
        [ 0.57254905,  0.49019608,  0.21960784,  1.        ],
        [ 0.57254905,  0.48627451,  0.22745098,  1.        ],
        ...,
        [ 0.5529412 ,  0.47450981,  0.21960784,  1.        ],
        [ 0.56078434,  0.48235294,  0.23137255,  1.        ],
        [ 0.56470591,  0.48627451,  0.23529412,  1.        ]],

       ...,
       [[ 0.57254905,  0.49019608,  0.25882354,  1.        ],
        [ 0.57647061,  0.49411765,  0.26274511,  1.        ],
        [ 0.57254905,  0.49019608,  0.25098041,  1.        ],
        ...,
        [ 0.50588238,  0.42352942,  0.14509805,  1.        ],
        [ 0.47058824,  0.38431373,  0.1254902 ,  1.        ],
        [ 0.46666667,  0.38039216,  0.12156863,  1.        ]],

       [[ 0.57254905,  0.49019608,  0.25098041,  1.        ],
        [ 0.57254905,  0.49019608,  0.25098041,  1.        ],
        [ 0.56862748,  0.49019608,  0.23921569,  1.        ],
        ...,
        [ 0.53725493,  0.45490196,  0.18431373,  1.        ],
        [ 0.50588238,  0.42745098,  0.17254902,  1.        ],
        [ 0.49411765,  0.41568628,  0.16078432,  1.        ]],

       [[ 0.57254905,  0.49019608,  0.25098041,  1.        ],
        [ 0.57254905,  0.49019608,  0.25098041,  1.        ],
        [ 0.56862748,  0.49019608,  0.23921569,  1.        ],
        ...,
        [ 0.56862748,  0.48627451,  0.21568628,  1.        ],
        [ 0.54509807,  0.46666667,  0.21176471,  1.        ],
        [ 0.53725493,  0.45882353,  0.20392157,  1.        ]]], dtype=float32)

In [6]: scipy_imread('bulk_water_000.png')
/usr/local/bin/ipython:1: DeprecationWarning: `imread` is deprecated!
`imread` is deprecated in SciPy 1.0.0.
Use ``matplotlib.pyplot.imread`` instead.
  #!/usr/local/opt/python3/bin/python3.6
Out[6]:
array([[[146, 125,  54, 255],
        [146, 125,  54, 255],
        [146, 125,  56, 255],
        ...,
        [140, 120,  55, 255],
        [141, 120,  59, 255],
        [142, 121,  60, 255]],

       [[146, 125,  54, 255],
        [146, 125,  54, 255],
        [146, 125,  56, 255],
        ...,
        [140, 120,  55, 255],
        [142, 121,  60, 255],
        [142, 121,  60, 255]],

       [[146, 125,  56, 255],
        [146, 125,  56, 255],
        [146, 124,  58, 255],
        ...,
        [141, 121,  56, 255],
        [143, 123,  59, 255],
        [144, 124,  60, 255]],

       ...,
       [[146, 125,  66, 255],
        [147, 126,  67, 255],
        [146, 125,  64, 255],
        ...,
        [129, 108,  37, 255],
        [120,  98,  32, 255],
        [119,  97,  31, 255]],

       [[146, 125,  64, 255],
        [146, 125,  64, 255],
        [145, 125,  61, 255],
        ...,
        [137, 116,  47, 255],
        [129, 109,  44, 255],
        [126, 106,  41, 255]],

       [[146, 125,  64, 255],
        [146, 125,  64, 255],
        [145, 125,  61, 255],
        ...,
        [145, 124,  55, 255],
        [139, 119,  54, 255],
        [137, 117,  52, 255]]], dtype=uint8)