An automatic method to calculate heart rate from zebrafish larval cardiac videos

BMC Bioinformatics

Table 2 Performance of heart rate calculation

Method	MAE	RMSE	rMAE	rRMSE
Number of heartbeats
This work	0.844	1.490	7.0%	12.4%
Individual¹	0.498	0.673	3.3%	17.3%
Crowd²	0.524	0.848	3.5%	21.9%
This work (−)³	1.656	2.339	13.3%	18.8%
Heart rate
This work	0.054	0.071	1.8%	2.4%
Individual	0.073	0.106	2.1%	5.6%
Crowd	0.089	0.167	2.5%	8.8%
This work (−)	0.338	0.528	11.1%	17.4%

The best performance of each evaluation index in heartbeat detection and in heart rate calculation are highlighted in bold. ¹Error of manual counting, where the average of an operator was used as the answer for his 30 results. ²Error of manual counting, where the average of all operators was used as the answer. ³Stands for “This work minus,” in which main features (the half-heart mask and noise filters) of this work were disabled

ISSN: 1471-2105