I am currently working with a thermal camera. The difference is, a “normal” camera has 3 pixels (RGB) with 8 bit each, while a thermal camera has only one pixel (greyscale) but with 14 bit. Since most imaging tools are designed for 24 bit (3x8 bit RGB), the software stores the data in one RGB image where the red channel is empty and green and blue share the information, which means, B contains the values 0-255 (8 Bit) and G the rest. I can open the RGB image in ImageJ and use Image -> Color -> Split Channels and I get all three channels separately, the R which is only black and the B and G with different values. Now I would like to add B and G consecutively in one 16 bit greyscale image; starting with B from 0-255 and G with 256-XXX.
Is there any way to tell ImageJ, that the layer B has the values 0-255 and G starts from 256? It is like a stacking, but instead of adding both channels in the same layer, the G has to be shifted by +8 bit (256).
So to clarify:
Starting image (3x8 bit):
R (no information)
What I would like to have (16 bit greyscale):
Thank you very much for your help!