# Image Enhancement and Features Extraction of Electron Microscopic Images Using Sigmoid Function and 2D-DCT

> Research article (IEEE Access, 2022) · cited 22× · AI/ML

**Wikidata**: [openalex:W4285821452](https://www.wikidata.org/wiki/openalex:W4285821452)  
**Source**: https://4ort.xyz/entity/image-enhancement-and-features-extraction-of-electron-microscopic-images-using-sigmoid-function-and-2d-dct