It's 5x9, but that's just how it's stored, right? The actual data comes from a linear array of 45 cameras, right? Or is it a curved array of 45 cameras along an arc?
Right, I think a linear array would work best since it matches where your eyes will be when you move left & right in front of the screen. https://lookingglassfactory.com/how-it-works/ It shows up on HDMI as 2560x1600 but I don't know how the physical panel is laid out.