# Digital image correlation with gray gradient constraints: Application to spatially variant speckle images

> Research article (Optics and Lasers in Engineering, 2015) · cited 13× · AI/ML

**Wikidata**: [openalex:W1120498162](https://www.wikidata.org/wiki/openalex:W1120498162)  
**Source**: https://4ort.xyz/entity/digital-image-correlation-with-gray-gradient-constraints-application-to-spatially-variant-speckle-images