is_low_contrast(image, fraction_threshold=0.05, lower_percentile=1, upper_percentile=99, method='linear')

Parameters

image : array-like

The image under test.

fraction_threshold : float, optional

The low contrast fraction threshold. An image is considered low- contrast when its range of brightness spans less than this fraction of its data type's full range.

lower_percentile : float, optional

Disregard values below this percentile when computing image contrast.

upper_percentile : float, optional

Disregard values above this percentile when computing image contrast.

method : str, optional

The contrast determination method. Right now the only available option is "linear".

Returns

out : bool

True when the image is determined to be low contrast.

Determine if an image is low contrast.

Examples

This example is valid syntax, but we were not able to check execution

>>> image = np.linspace(0, 0.04, 100)
... is_low_contrast(image)
True

This example is valid syntax, but we were not able to check execution

>>> image[-1] = 1
... is_low_contrast(image)
True

This example is valid syntax, but we were not able to check execution

>>> is_low_contrast(image, upper_percentile=100)
False

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

skimage.viewer.widgets.core.Slider skimage.exposure.exposure.is_low_contrast

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