OTG is just a capability that enables a phone to act as a Host rather than an accessory. It becomes a computer rather than a memory module, or similar. As such OTG is not in play when connecting the FLIR ONE G2 to a standard PC as that is already in Host mode via its USB ports. The FLIRONE just wants a host, it cares not what that host is. The OTG connector supplies normal Supply, D+, D-, 0v pins. The fifth pin is used by the phone only to set it to Host mode. In the OTG spec the pin is actually the ID terminal on pin 4 of the connector.
I see no issue with adapting the 5 pin micro USB connector to a standard full size A or B connector for linking to aC. The FLIR ONE is a standard USB device.
If appropriate drivers are install, it should be visible and accessible from a PC. Then the fun begins, writing an application to process the cameras data. I do not have the SDK so do not know how much image processing occurs in the camera and how much is needed in the host.
If the FLIR ONE can be used with a PC, it will really open up some interesting possibilities. I was hoping that FLIR would produce a thermal web cam to join its range of visible light security webcams, but that has not happened yet.
Aurora.