Re: Remote Site SSTV
Here is an application that sends images over AX.25: Packet Compressed Sensing Imaging (PCSI)
If part of the transmission gets lost there is just an overall degradation in image quality, not a missing piece.
The direwolf software TNC has a builtin DTMF decoder which sends a specially encoded packet to all connected applications.
You would need a script to look for that message, tell the camera to capture an image, then command PSCI to transmit it.
PSCI sends packets to direwolf which sends them over the radio.