# Color medical image lossless watermarking using chaotic system and accurate quaternion polar harmonic transforms

> Research article (Signal Processing, 2018) · cited 171× · AI/ML

**Wikidata**: [openalex:W2901096848](https://www.wikidata.org/wiki/openalex:W2901096848)  
**Source**: https://4ort.xyz/entity/color-medical-image-lossless-watermarking-using-chaotic-system-and-accurate-quaternion-polar-harmonic-transforms