Convert image to uint8.
The conversion of img to an 8-bit unsigned integer, is dependent on the type of input image. The following input classes are supported for non-indexed images:
Values are rescaled to the range of the uint8 class [0 255].
True and false values are assigned a value of 0 and 255 respectively.
Values are truncated to the interval [0 1] and then rescaled to the range of values of the uint8 class [0 255].
Returns the same image.
If the second argument is the string "indexed", then values are
cast to uint8, and a -1 offset is applied if input is
a floating point class. Input checking is performed and an error will
be throw is the range of values in uint8 is not enough for all the
image indices.
See also: im2bw, imcast, im2double, im2int16, im2single, im2uint16.
Package: image