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I guess you should convert it yourself, Why? Well I for example have a 16bit image of a thermal camera. Of course there is a function to convert it to mono8. BUT. If you convert it you lose a lot of space, lets say all the values of your picture lay between 100-500. Now you convert the 32 to 8 bits space... -> you will get a totally dark grey (almost black) image. You will lose the steps in between!

So for viewing it, it will be complete rubbish, well if the values are in big jumps like 1000 -> 10000 (not normal not for a real world image)

I guess you should specifiy some function to check where your values are, and color/grey them in that range. So you will still be able to see something.

Viewing in that case is more difficult then just processing ;-)

Regards,

Christian