# Crowdsourcing visual perception experiments: a case of contrast threshold

> Research article (PeerJ, 2019) · cited 48× · AI/ML

**Wikidata**: [openalex:W2994795658](https://www.wikidata.org/wiki/openalex:W2994795658)  
**Source**: https://4ort.xyz/entity/crowdsourcing-visual-perception-experiments-a-case-of-contrast-threshold