# A new optimization based color image watermarking using non-negative matrix factorization in discrete cosine transform domain

> Research article (Journal of Ambient Intelligence and Humanized Computing, 2021) · cited 21× · AI/ML

**Wikidata**: [openalex:W3192918875](https://www.wikidata.org/wiki/openalex:W3192918875)  
**Source**: https://4ort.xyz/entity/a-new-optimization-based-color-image-watermarking-using-non-negative-matrix-factorization-in-discrete-cosine-transform-d