# Image smoothing based on histogram equalized content-aware patches and direction-constrained sparse gradients

> Research article (Signal Processing, 2021) · cited 22× · AI/ML

**Wikidata**: [openalex:W3130263204](https://www.wikidata.org/wiki/openalex:W3130263204)  
**Source**: https://4ort.xyz/entity/image-smoothing-based-on-histogram-equalized-content-aware-patches-and-direction-constrained-sparse-gradients