# Smartphone-based respiratory rate estimation using photoplethysmographic imaging and discrete wavelet transform

> Research article (Journal of Ambient Intelligence and Humanized Computing, 2019) · cited 39× · AI/ML

**Wikidata**: [openalex:W2950709924](https://www.wikidata.org/wiki/openalex:W2950709924)  
**Source**: https://4ort.xyz/entity/smartphone-based-respiratory-rate-estimation-using-photoplethysmographic-imaging-and-discrete-wavelet-transform