Recently I have been studying @Moevi.nl 's suggestion regarding the possibility of executing the DSuper8 software in its entirety, that is, both the server program and the client program simultaneously in the same RPI4 machine.
Made the appropriate test, I have to affirm that, in effect, it is a valid option. The software is executed fluently and without problems.
Logically, the benefits in terms of capture times are lower with respect to the use of a PC as a client, but if we are not too demanding, the system as a whole is perfectly usable.
The HDR fusion algorithm is really responsible for the greatest slowness. While in a PC the 6 images HDR fusion is carried out in a second fraction, in the RPI it takes approximate time of 5 s.
The capture of an HDR frame with 6 images with PC takes a time of about 2.6 s. With the RPI we are going to the 8 s.
On the other hand, the DSuper8 client software uses Python 3.10 and PyQt6, while in the repository of the Bullseye operating system we find Python 3.9.2. and PyQt5.
That is, in other words, we have to compile and install the required versions of Python and PyQt6 in the RPI.
Best regards