machinevisiontoolbox.Image.std

Image.std(*args, **kwargs)[source]

Standard deviation of all pixels

Parameters:

  • args – additional positional arguments to numpy.std

  • kwargs – additional keyword arguments to numpy.std

Returns:

standard deviation value

Example:

>>> from machinevisiontoolbox import Image
>>> img = Image.Read('flowers1.png')
>>> img.std()
64.30520799436279
>>> img = Image.Read('flowers1.png', dtype='float32')
>>> img.std()
0.25217727
Note:

  • The return value type is the same as the image type.

  • By default the result is a scalar computed over all pixels, if the axis option is given the results is a 1D or 2D NumPy array.

Seealso:

numpy.std