The frames in sliceOmatic have 2 components: The GLI images and the TAG image.  The TAG image is a 8bit value representing the TAGs associated with each pixels.  The GLI image is an integer value representing the original image pixels.  If the original image had floating point pixels, or RGB color pixels, these have been transformed in integer values.  To get back to the original floating point or color values, you need to use one of the following functions: