# A color watermarking scheme in frequency domain based on quaternary coding

> Research article (The Visual Computer, 2020) · cited 33× · AI/ML

**Wikidata**: [openalex:W3109834096](https://www.wikidata.org/wiki/openalex:W3109834096)  
**Source**: https://4ort.xyz/entity/a-color-watermarking-scheme-in-frequency-domain-based-on-quaternary-coding