Dahua Xinghan AI Models: From SMD to Natural-Language Video Search
Xinghan is Dahua's family of large-scale AI models, announced in September 2025. It has language (L), vision (V) and multimodal (M) series, and powers features such as WizSeek natural-language video search, text-defined alarms and perimeter detection of targets as small as 20 × 20 pixels. It's the latest step in a run of AI upgrades, from SMD 3.0 in 2021 through AcuPick search in 2023. Here's how Dahua's AI has developed and what it means for everyday CCTV.
Step by step: Dahua's AI since 2021
- 2021, SMD 3.0: Smart Motion Detection that separates people and vehicles from other movement. Dahua quoted 99% accuracy for humans and vehicles at up to 25m on a 2.8mm camera, alongside face recognition and AI Coding to cut bandwidth.
- 2022, SMD 4.0 and Quick Pick: Dahua says SMD 4.0 cut false alarms from large animals from 5% to 2%, and from cats and dogs from 1% to 0.5%. Quick Pick searches by clothing and vehicle colour. AI Scene Self-Adaption adjusts the image for rain, fog and backlight.
- 2022, WizMind upgrades: PPE detection (hard hats, vests and masks), parking-space monitoring and illegal-parking detection with loudspeaker warnings.
- 2023, WizMind S and AcuPick: WizMind S added video metadata for up to 100 targets at once, sound detection for screams and breaking glass, and perimeter protection that Dahua rates at up to 99% accuracy. AcuPick combines camera and recorder AI: select a person or vehicle and the system finds them across your recordings without an expensive server.
For the difference between Dahua's two AI camera lines, see our WizSense guide and WizMind guide.
What large-scale AI models change
Older analytics were narrow programs trained for one job each. Large-scale models are trained on far more data and learn more general understanding, so they cope better with unusual scenes, and multimodal models can connect pictures with words.
The Xinghan series
V-series: vision
- Perimeter protection detecting targets as small as 20 × 20 pixels, with fewer false alarms.
- WizTracking, which Dahua says tracks 50% more accurately when targets are partly hidden.
- Crowd Map with twice the detection range, 80% better accuracy in rain and analysis of up to 5,000 people.
- AI WDR that sets up the camera according to the scene.
- AI Rule Assist: one click to draw perimeter rules, based on automatic scene recognition.
M-series: multimodal
- WizSeek: search video by describing what you're looking for in plain language.
- Text-Defined Alarms: create a custom alarm rule by typing it, with no coding.
L-series: language
Natural-language understanding and interaction, the foundation for the text and voice features above.
What it means for you
- Fewer false alarms, especially at long range and in bad weather.
- Faster investigations: describe what happened and let the system find it.
- Easier set-up, with rules drawn and tuned automatically.
Dahua AI cameras and recorders we stock
- WizSense: DH-IPC-HDW3849HP-AS-PV-PRO 8MP TiOC PRO and DH-IPC-HDW2649TMP-S-PV 6MP TiOC Lite
- WizMind: DH-IPC-HDW5541TP-ZE-ATC 5MP and IPC-EBW81242P-AS-S2 12MP fisheye
- Recorders: DHI-NVR5832-16P-4KS2E 32-channel Pro NVR
Which AI features are available depends on the camera, recorder and firmware, so check the product page or ask us. Browse the full Dahua range.
Our take
Dahua's AI story has moved from "is that a person?" to "show me the white van that stopped by the gate after 10pm". Xinghan is the foundation for that shift. As with any new AI feature, it will reach products gradually, so focus on what a specific camera and recorder support today.
Want to know which AI features suit your site? Call 01902 902251. We ship nationally to England, Scotland and Wales.
Quick questions
What is Dahua Xinghan?
Dahua's family of large-scale AI models, with language, vision and multimodal series, announced in September 2025.
What is WizSeek?
Natural-language video search: describe a person or vehicle and the system finds matching footage.
What is AcuPick?
Dahua's AI search that matches a selected person or vehicle across recordings using camera and recorder AI together.
What is SMD?
Smart Motion Detection: Dahua's AI filter that alerts on people and vehicles rather than any movement.
Sources: Dahua MENA press releases, 3 March 2021, 16 May 2022, 4 July 2022, 7 January 2023, 9 May 2023 and 19 September 2025. Figures are Dahua's own.
