# An improved first quantization matrix estimation for nonaligned double compressed JPEG images

> Research article (Signal Processing, 2019) · cited 21× · AI/ML

**Wikidata**: [openalex:W2995087390](https://www.wikidata.org/wiki/openalex:W2995087390)  
**Source**: https://4ort.xyz/entity/an-improved-first-quantization-matrix-estimation-for-nonaligned-double-compressed-jpeg-images