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Table 1 Size of ground images (length and width) and effective pixel dimensions (Instantaneous Field of View = IFoV) as affected by sensor resolution and measurement altitude

From: Remote, aerial phenotyping of maize traits with a mobile multi-sensor approach

Camera Lens (focal length) Sensor resolution Sensor dimensions Image parameter Altitude 290 300 310
  mm pixel mm   m m m
NIR 60 4282 × 2848 22.2 × 14.8 length 107.6 111.3 115.5
     width 71.5 74.0 76.5
     IFoVa 0.025 0.026 0.028
RGB 60 3898 × 2595 22.2 × 14.8 length 107.3 111.1 114.7
     width 71.4 73.9 76.4
     IFoV 0.0275 0.0285 0.0295
IR 75 640 × 480 14.9 × 11.2b length 61.9 64 66.1
     width 46.4 48 49.6
     IFoV 0.096 0.1 0.103
  1. aIFoV = (pixel dimension*distance)/focal length.
  2. bIFoV = (sensor pixel size* distance to ground)/focal length, derived from companies IFoV calculator.