# Color image watermarking scheme based on quaternion Hadamard transform and Schur decomposition

> Research article (Multimedia Tools and Applications, 2017) · cited 144× · AI/ML

**Wikidata**: [openalex:W2586363962](https://www.wikidata.org/wiki/openalex:W2586363962)  
**Source**: https://4ort.xyz/entity/color-image-watermarking-scheme-based-on-quaternion-hadamard-transform-and-schur-decomposition