# Glossary — Physical Security & AI Video Analytics > Plain-English definitions of CV, AI and surveillance terms. Canonical URL: https://safetyscope.eu/glossary - [What is computer vision in security?](https://safetyscope.eu/glossary/computer-vision-security) - [What is perimeter intrusion detection?](https://safetyscope.eu/glossary/perimeter-intrusion-detection) - [What is object detection in CCTV?](https://safetyscope.eu/glossary/object-detection-cctv) - [What is video analytics software?](https://safetyscope.eu/glossary/video-analytics-software) - [What is a false positive in security cameras?](https://safetyscope.eu/glossary/false-positive-security-cameras) - [What is edge AI in physical security?](https://safetyscope.eu/glossary/edge-ai-physical-security) - [What is VMS (video management software)?](https://safetyscope.eu/glossary/video-management-software-vms) - [What is ONVIF and why does it matter?](https://safetyscope.eu/glossary/what-is-onvif) - [What is a PSIM?](https://safetyscope.eu/glossary/what-is-psim) - [What is thermal imaging in security?](https://safetyscope.eu/glossary/thermal-imaging-security) - [What is people counting technology?](https://safetyscope.eu/glossary/people-counting-technology) - [What is anomaly detection in video surveillance?](https://safetyscope.eu/glossary/anomaly-detection-video) - [What is a security operations centre (SOC)?](https://safetyscope.eu/glossary/security-operations-centre-soc) - [What is multi-camera tracking?](https://safetyscope.eu/glossary/multi-camera-tracking) - [What is a video retention policy in security systems?](https://safetyscope.eu/glossary/video-retention-policy) - [What is a virtual tripwire in security cameras?](https://safetyscope.eu/glossary/virtual-tripwire-security) - [What is video metadata in surveillance?](https://safetyscope.eu/glossary/video-metadata-surveillance) - [H.264 vs H.265 for security cameras: what's the difference?](https://safetyscope.eu/glossary/h264-vs-h265-security-cameras) - [What is a PTZ camera and how does AI control it?](https://safetyscope.eu/glossary/ptz-camera-ai-control) - [What is GDPR compliance for CCTV operators?](https://safetyscope.eu/glossary/gdpr-cctv-compliance) - [NVR vs DVR vs NAS: what's the difference for security systems?](https://safetyscope.eu/glossary/nvr-vs-dvr-vs-nas-security) - [What is video evidence management?](https://safetyscope.eu/glossary/video-evidence-management)