imou had newer any local detection. the "AI" detection on these cams only works with enabled internet to cloud to my knowledge.
AI detection (people and vehicles) and smart tracking of people also work without internet access and therefore without the Imou Cloud. However, the Imou app doesn't work without the Imou Cloud, and therefore the Imou app cannot be used for this purpose. However, you can still use the AI features without the cloud, for example, via a Dahua NVR.
I have an
Imou Cruiser Dual 8MP, among other devices, and it's fully supported by my Dahua NVR2108-I. Internet access for the Imou Cruiser Dual is blocked, but AI detection and smart tracking still work
about the camera itself.
AI via camera and not via recorder.
In the new Imou models, such as the
Imou Cruiser 2, Imou has integrated a different and new AI functionality, which they call Algo Play. AI functionalities can/must be downloaded over the internet. I don't know whether these AI features will still work without the Imou Cloud. But I don't think so, because Imou also wants to sell cloud subscription and generate more revenue that way.

I have already mentioned here that the Dahua P5D-5F-PV is virtually identical to the Imou Crusier Dual:
Does the P5D-5F-PV Camera Support ONVIF Protocol?
Yes, of course the Imou models are "slimmed down" compared to the higher quality and therefore more expensive Dahua models, i.e. the Imou models use cheaper hardware and some software features have been omitted, but as already mentioned in the other posting the Dahua P5D-5F-PV is identical to the Imou Cruiser Dual, the only difference is that the Imou Cruiser Dual only cost me €55 and the Dahua P5D-5F-PV costs over €100 here in Germany. And for a price of €55 I obviously don't expect what a Dahua model from the PT3, SD3, SD4, SD5... series offers me. For the Imou Crusier Dual's intended use here, the camera is perfectly sufficient for me and the price of €55 (via Aliexpress) is/was virtually unbeatable.
BTW: As far as I know, the
TP-Link Vigi models are also Dahua OEM models, but they are not as "slimmed down" as the Imou models and the Vigi models, for example, also have more Dahua IVS features than the Imou models.
Example: Tp-Link Vigi Smart Event
• Intrusion Detection
• Line-Crossing Detection
• People Detection
• Vehicle Detection
• Region Entering Detection
• Region Exiting Detection
• Object Abandoned Detection
• Object Removal Detection
• Loitering Detection
• Abnormal Sound Detection
• Scene Change Detection
The
TP-Link VIGI C540 model is available in Germany for around €100. However, the Vigi models are not recognized as Dahua models by my Dahua NVR - like the Imou - but they have to be integrated via Onvif. I personally don't need another camera here, but the Vigi models seem to be a good compromise
for me if you're looking for a somewhat more affordable camera model.
Edit: If anyone here has already tested Vigi models with a Dahua NVR, I'd be interested in the experiences. For example, which AI features are available when integrated with the NVR via Onvif. The Vigi models also use Onvif Profile-S and therefore some Smart Event features may no longer be available when integrated via Onvif via a Dahua NVR.