PULSE RATE ESTIMATION APPARATUS, PULSE RATE ESTIMATION METHOD, AND COMPUTER-READABLE STORAGE MEDIUM

摘要

A pulse rate estimation apparatus based on observation of human skin, includes a video capturing means that captures a video of a human body part from where pulse signal, which is the direct effect of a certain physiological process, be extracted, a body-part tracking means that detect specific human body part, and generate feature points indicating important structural landmarks on the body part for each frame where the body part is detected, a noise source detection means that identify the noise source and assign labels to each video, a ROI selection and pulse signal extraction means that select an ROI and divide it into sub-regions, extract pulse signal from each sub-regions, create a label-dependent ROI filter to assign each ROI sub-region with a weight proportional to the amount of useful pulse information present in it, and apply label-dependent noise estimation and correction to the pulse signals extracted from each sub-region, a pulse rate estimation means that combine the pulse signals extracted and ROI filter created in previous step to form the final noise suppressed pulse signal and perform frequency analysis on that extracted noise suppressed pulse signal and generate pulse rate candidates, a spectral peak tracking means that select a pulse rate value from the list of pulse rate candidates generated in previous step, which is consistent with other pulse rate values in time for each video frame.