Convert image to 16-bit signed integers
im2 = im2int16(im)
An matrix/image, which can be ANY image supported by IPCV.
Output image, a 16-bit signed integer matrix.
im2int16 convert intensity or RGB images to 16-bit signed integers. If the input is of class int16, the output image is identical to it. Otherwise, im2int16 rescales or offsets the data, and returns the equivalent image of class int16.