# A cascade gray-stereo visual feature extraction method for visual and audio-visual speech recognition

> Research article (Speech Communication, 2017) · cited 14× · AI/ML

**Wikidata**: [openalex:W2597418160](https://www.wikidata.org/wiki/openalex:W2597418160)  
**Source**: https://4ort.xyz/entity/a-cascade-gray-stereo-visual-feature-extraction-method-for-visual-and-audio-visual-speech-recognition