In this paper, we report the results of accuracy verification of a measurement method for capturing pulse waves from the sole of rodents using an RGB camera in a non-contact, non-invasive manner. In order to acquire biometric data such as pulse waves from animals, a non-invasive method is required to minimize the impact on the animal. We experimented with verifying the accuracy of pulse waves using an RGB camera synchronized with the electrocardiogram (ECG). As a result, our proposed method of detecting pulse waves from the sole was observed to measure pulse rate with similar accuracy to an ECG. The deviation of the heartbeat interval was somewhat larger for the proposed method than for the ECG; the maximum absorption peak of the Green signal showed the same pattern in the extremities, indicating that the deviation of pulse wave propagation was larger than 1/250 s. The deviation between the R-wave peak of the ECG and the maximum absorption peak of the sole was 0.1 s.
|