# MantaRayWmark: An image adaptive multiple embedding strength optimization based watermarking using Manta Ray Foraging and bi-directional ELM

> Research article (Expert Systems with Applications, 2022) · cited 27× · AI/ML

**Wikidata**: [openalex:W4220972972](https://www.wikidata.org/wiki/openalex:W4220972972)  
**Source**: https://4ort.xyz/entity/mantaraywmark-an-image-adaptive-multiple-embedding-strength-optimization-based-watermarking-using-manta-ray-foraging-and