A Nonfiducial PPG-Based Subject Authentication Approach Using the Statistical Features of DWT-Based Filtered Signals

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/js/volume-2020/8849845/figures/8849845.fig.0011a.svgz" name="8849845.fig.0011a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Features of B<sub>1</sub></td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/js/volume-2020/8849845/figures/8849845.fig.0011b.svgz" name="8849845.fig.0011b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Features of B<sub>2</sub></td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/js/volume-2020/8849845/figures/8849845.fig.0011c.svgz" name="8849845.fig.0011c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Features of B<sub>3</sub></td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/js/volume-2020/8849845/figures/8849845.fig.0011d.svgz" name="8849845.fig.0011d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Features of B<sub>4</sub></td></tr></table>

<div>Subjects’ frame separability using single filtered signal feature vector.</div>

Journal of Sensors

fig11

Figure 11

Figure 11: A Nonfiducial PPG-Based Subject Authentication Approach Using the Statistical Features of DWT-Based Filtered Signals 