{
  "focal": 941.2139844894409,
  "cx": 320.0,
  "cy": 240.0,
  "width": 640,
  "height": 480,
  "gravity_up": [
    -0.01847822405397892,
    -0.9980723857879639,
    -0.0592460036277771
  ]
}