# Polarization-based spatial filtering for directional and nondirectional edge enhancement using an S-waveplate

> Research article (Applied Optics, 2017) · cited 59× · AI/ML

**Wikidata**: [openalex:W2605168792](https://www.wikidata.org/wiki/openalex:W2605168792)  
**Source**: https://4ort.xyz/entity/polarization-based-spatial-filtering-for-directional-and-nondirectional-edge-enhancement-using-an-s-waveplate