# A reference-free underwater image quality assessment metric in frequency domain

> Research article (Signal Processing Image Communication, 2021) · cited 149× · AI/ML

**Wikidata**: [openalex:W3135971978](https://www.wikidata.org/wiki/openalex:W3135971978)  
**Source**: https://4ort.xyz/entity/a-reference-free-underwater-image-quality-assessment-metric-in-frequency-domain