If I use >2 cameras, how is disparity calculated?

[crmauceri]

I have a custom camera configuration in my settings with 4 cameras arranged in an upside-down T configuration, like so:

               front_top
front_left front_center front_right

I am recording the NormalizedDisparity from these cameras. Which pairs will the disparity be computed between?

Here's the settings.json file

{
  "SeeDocsAt": "https://github.com/Microsoft/AirSim/blob/master/docs/settings.md",
  "SettingsVersion": 1.2,
  "SimMode": "Car",
  "Vehicles": {
    "PhysXCar": {
      "VehicleType": "PhysXCar",
      "DefaultVehicleState": "",
      "AutoCreate": true,
      "PawnPath": "",
      "EnableCollisionPassthrogh": false,
      "EnableCollisions": true,
      "RC": {
        "RemoteControlID": -1
      },
      "Cameras": {   
        "front_center": {
          "X": 2, "Y": 0, "Z": -1,
		  "Pitch": 0, "Roll": 0, "Yaw": 0
        },
        "front_left": {
          "X": 2, "Y": -0.30, "Z": -1,
		  "Pitch": 0, "Roll": 0, "Yaw": 0
        },
	"front_right": {
          "X": 2, "Y": 0.30, "Z": -1,
		  "Pitch": 0, "Roll": 0, "Yaw": 0
        },
        "front_top": {
          "X": 2, "Y": 0, "Z": -1.3,
		  "Pitch": 0, "Roll": 0, "Yaw": 0
        }
      }
    }
  },
  "CameraDefaults": {
    "CaptureSettings": [
      {
        "ImageType": 0,
        "Width": 1440,
        "Height": 1080,
        "FOV_Degrees": 90
     },
     {
        "ImageType": 2,
        "Width": 1440,
        "Height": 1080,
        "FOV_Degrees": 90
     },
     {
        "ImageType": 4,
        "Width": 1440,
        "Height": 1080,
        "FOV_Degrees": 90
     }]
   },
  "Recording": {
  	"Cameras": [
    		{ "CameraName": "front_center"},
    		{ "CameraName": "front_left"},
    		{ "CameraName": "front_right"},
    		{ "CameraName": "front_top"},
    		{ "CameraName": "front_center", "pixels_as_float": "true", "ImageType" :4},
    		{ "CameraName": "front_left", "pixels_as_float": "true", "ImageType" :4},
    		{ "CameraName": "front_right", "pixels_as_float": "true", "ImageType" :4},
    		{ "CameraName": "front_top", "pixels_as_float": "true", "ImageType" :4},
    		{ "CameraName": "front_center", "pixels_as_float": "true", "ImageType" :2},
    		{ "CameraName": "front_left", "pixels_as_float": "true", "ImageType" :2},
    		{ "CameraName": "front_right", "pixels_as_float": "true", "ImageType" :2},
    		{ "CameraName": "front_top", "pixels_as_float": "true", "ImageType" :2}
	]
  } 
}