16 - 32 bit image data conversion

Hi all

Could someone pelase explain me how I can convert 16 - 32 bit RGB image from FilterRecord::inData to 8 bit RGB, and than how I can convert back 8 bit to 16 - 32 bit RGB image to store it in FilterRecord::outData. Maybe there exist some information in documentation or in some sample? I'm asking because I didn't find it.

Thanks for help!

Best Regard

Yaroslav