# Coefficient difference based watermark detector in nonsubsampled contourlet transform domain

> Research article (Information Sciences, 2019) · cited 30× · AI/ML

**Wikidata**: [openalex:W2956009961](https://www.wikidata.org/wiki/openalex:W2956009961)  
**Source**: https://4ort.xyz/entity/coefficient-difference-based-watermark-detector-in-nonsubsampled-contourlet-transform-domain