skimage2.util.img_as_float

skimage2.util.img_as_float(image, force_copy=False)

Convert an image to floating point format.

This function is similar to img_as_float64, but will not convert lower-precision floating point arrays to float64.

Parameters:

imagendarray

Input image.

force_copybool, optional

Force a copy of the data, irrespective of its current dtype.

Returns:

outndarray of float

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. If the input image has a float type, intensity values are not modified and can be outside the ranges [0.0, 1.0] or [-1.0, 1.0].