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Table 3 Comparison of proposed method and manual observation for estimation of heading stage

From: Automatic estimation of heading date of paddy rice using deep learning

Dataset Transplanting dates 1st panicle appearance (field observed) 50%flowering dates (field observed) 50%flowering dates (estimated) Estimation error (days)
Kinmaze 05/31/2013 08/21/2013 08/24/2013 08/26/2013 +2
day 0 day 83 day 86 day 88  
Kamenoo 05/31/2013 08/20/2013 08/23/2013, 08/24/2013, +1
day 0 day 82 day 85 day 86  
Koshihikari-1 05/29/2014 08/02/2014 08/05/2014, 08/06/2014, +1
day 0 day 67 day 70 day 71  
Koshihikari-2 05/29/2014 08/03/2014 08/06/2014 08/06/2014 0
day 0 day 68 day 71 day 71  
Koshihikari-3 05/29/2014 08/04/2014 08/07/2014, 08/07/2014, 0
day 0 day 69 day 72 day 72  
Mean absolute error (days) 0.8
  1. Formula for estimation error: (estimated) − ( field observed) 50% flowering date