# An Evaluation of Non-Contact Photoplethysmography-Based Methods for Remote Respiratory Rate Estimation

> Research article (Sensors, 2023) · cited 21× · AI/ML

**Wikidata**: [openalex:W4360863138](https://www.wikidata.org/wiki/openalex:W4360863138)  
**Source**: https://4ort.xyz/entity/an-evaluation-of-non-contact-photoplethysmography-based-methods-for-remote-respiratory-rate-estimation