You can do image processing on either. You may want to look at other
deciding factors to help.
1. What hardware platform do you want to use? If for other reasons, you
want to go non-X86 - choose CE.
2. Device driver support. Does a device driver for your capture device
exist for CE? If not, do you want to write one? If not, choose XPE.
3. Other applications/etc. Is running win32 3rd party apps important for
your total solution? If so, choose XPE.
As to your question of "Is there image processing library for windows
embedded?": Yes and no. Image processing can be a very specialized
technology. Are your processing needs proprietary? Are you going to want
to involve code to talk to a specific DSP engine? etc.
You asked about cost. CE is cheaper from a runtime license perspective.
The total cost of your solution will depend on how much engineering effort
needs to go into either solution (CE or XPE) for writing device drivers,
etc. -vs- the run rate you expect to hit for licenses. Extreme examples are
obvious: Ex1: You will sell 80 million copies and therefore you want to
optimize the lower runtime cost. The engineering cost is "worth it". Ex2.
You will sell 10 copies, you want to optimize your engineering costs. The
extra cost for the license will be much less than your engineering costs.
