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Table 2

From: A system for computerised retinal haemorrhage analysis

  Expected value HAS Value, including human tracing error
centre of mass of square 135 × 289 134.5 × 288.5
  300 × 300 300 × 300
centre of mass of circle 138 × 133 137 × 132
  145 × 315 146 × 316
eccentricity of line shape 1 0.999
eccentricity of near circular shape <0.2 0.106