# From Global to Local: Multi-Patch and Multi-Scale Contrastive Similarity Learning for Unsupervised Defocus Blur Detection

> Research article (IEEE Transactions on Image Processing, 2023) · cited 15× · AI/ML

**Wikidata**: [openalex:W4319068715](https://www.wikidata.org/wiki/openalex:W4319068715)  
**Source**: https://4ort.xyz/entity/from-global-to-local-multi-patch-and-multi-scale-contrastive-similarity-learning-for-unsupervised-defocus-blur-detection