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Figure 7
OpenCV can be used to detect an ultrafast heartbeat in Daphnia magna. Comparison of heart rate obtained from at either 15 °C (A) or 35 °C (B) using ImageJ TSA and OpenCV methods. Comparison of heartbeat intervals at either 15 °C (C) or 35 °C (D) using ImageJ and OpenCV methods. Comparison of heartbeat regularity at either 15 °C (E) or 35 °C (F) using ImageJ TSA and OpenCV methods. Data was calculated using Wilcoxon test and presented as Mean ± SD, n = 20 (* p < 0.05; ** p < 0.01; *** p < 0.001).
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