Question about a product existing for a camera microprocessor

[avb284782235]

Hello, sorry I’m advance if this is not the right section to post the question.  I am looking to combine ntsc signals from at least 2-4 cameras, and have them combined/ superimposed together to have one output with low latency.  Specifically, I am trying to combine 4 ntsc signals from 4 cameras with telephoto lenses, spaced out to have the right framing where the image borders intersect, and have a processor join these images together into a seemingly higher resolution image than just one camera has by itself. 

My goal is to use 4 flir lepton sensors with ntsc output breakout boards, and have these ntsc analog outputs combined via some sort of microprocessor to have one low latency output that can be used to go to an analog video transmitter.  Thank you in advance.

[donmr]

First, NTSC signals are ANALOG so you will need some A/D converters.  These typically run at about 12 MHz so you won't be using the converters in common small micro-controllers.

Second, look at the amount of data that needs to be processed (width * height * frames_per_sec * number_of_channels).  That will tell you how many pixels need to be handled each second.  Then look at how many operations the algorithm needs.  Depending on this number you might conclude that you need a *very* fast processor or some custom logic (like an FPGA).

And of course to output NTSC you will need to convert back to analog again.

Once long ago people did this kind of operation all in analog with some tricky circuits.
Once a bit later you could buy A/Ds and D/As specially made for NTSC & PAL signals.  I don't know if any of those are still available.

[inse]

You are looking for a genlock device