[Greg McKaskle]

SD and Network tables isn't really intended for large or complex elements. This means that sending a modified image doesn't really work out.

There are two suggestions for getting the display on the dashboard.
1. Rather than ship the mask, do the calculations of the interesting elements. Describe those by using a rectangle, circle, or lines. These can be transmitted via SD and annotated on the image.
2. Open your own TCP port or socket and send the binary mask using read and writes.

Greg McKaskle