how to transmit video of image processing from jetson to PC monitor?
This was from the TK1, but probably it applies to the TX1, and describes a virtual desktop setup:
If you want to see the Jetson’s graphical desktop from a remote system you can often just use X11 forwarding…but if you want to do CUDA and other work where the GPU of the Jetson is used, then something like a virtual desktop is required. Remote X forwarding offloads GPU to the host PC; virtual desktops will use the Jetson’s GPU, and then allow remote to see the framebuffer. There may be performance issues if you are not using something fast like wired ethernet. You would probably need an example use-case to provide more information.
Here is another URL related to virtual desktops: