# Estimating animal size or distance in camera trap images: Photogrammetry using the pinhole camera model

> Research article (Methods in Ecology and Evolution, 2022) · cited 34× · AI/ML

**Wikidata**: [openalex:W4229053904](https://www.wikidata.org/wiki/openalex:W4229053904)  
**Source**: https://4ort.xyz/entity/estimating-animal-size-or-distance-in-camera-trap-images-photogrammetry-using-the-pinhole-camera-model