# A4LidarTag: Depth-Based Fiducial Marker for Extrinsic Calibration of Solid-State Lidar and Camera

> Research article (IEEE Robotics and Automation Letters, 2022) · cited 26× · AI/ML

**Wikidata**: [openalex:W4285142571](https://www.wikidata.org/wiki/openalex:W4285142571)  
**Source**: https://4ort.xyz/entity/a4lidartag-depth-based-fiducial-marker-for-extrinsic-calibration-of-solid-state-lidar-and-camera