img-as-float

img_as_float

skimage.util.img_as_float(image, force_copy=False) [source]

Convert an image to double-precision floating point format.

Parameters:	image : ndarray Input image. force_copy : bool Force a copy of the data, irrespective of its current dtype.
Returns:	out : ndarray of float64 Output image.

Notes

The range of a floating point image is [0.0, 1.0] or [-1.0, 1.0] when converting from unsigned or signed datatypes, respectively.