Would be interesting to have some proper documentation photos of the different PCBs and other hardware for more people to be able to help out understanding the beast. So for PCBs that would be pictures with good lighting (from several directions), taken from straight above and in focus over the whole board so that markings on chip are readable, and of both sides of each board.
What I can see on this is the following:
Bottom left there is a Renesas HD64F2367VTE33V H8S 33 MHz 8-bit microcontroller with 384 kb flash and 24 kb ram.
Above that there is a Microchip 24AA64ISN, 8kb EEPROM
Further up there is on the left an Altera EPCS16N which is a 16 Megabit (so 2Mbyte) configuration memory for the FPGA that is the big one on the right. So this would contain the encrypted bitstream that the FPGA runs, the FPGA itself has no persistent memory.
The Altera CPM3032ATC44-10N is a small CPLD programmable logic probably just glueing things together.
The big chip is an FPGA Altera Cyclone II EP2C20F484C7N - 65 USD a pop on digikey - 1172 logic blocks, 239k bits RAM, 18752 logic cells. This is big enough to run a CPU that can run Linux but more likely it is acting as DSP for image processing if it is a camera module. Also you see 5 pairs of traces go at constant distance down to the connector bottom left, that would be some differential high speed communication (like ethernet, usb, sata, hdmi etc)
To the right of the FPGA there is a 32-bit wide SDR SDRAM memory which is 64 Megabit so 8 Mb and 6 ns access time or 167 MHz.
Also you can see that the whole board is sprayed with testpoints, looks like basically every pin on the H8S microcontroller e.g. has it’s on testpoint in a via.