New AI capabilities for WizSense

Issue 3 2022 Surveillance

Dahua Technology is bringing new AI features to its WizSense family. Adopting an independent AI chip and deep-learning algorithm, the new WizSense integrates SMD 4.0, Quick Pick, AI Scene Self-adaption (SSA), AI Coding and other extended AI functions to deliver accurate detection, fast target search, simplified operation and inclusive AI products to customers.

“User demands are becoming more diverse, with higher requirements for AI accuracy and better image quality in different scenarios,” says Eaden Xie, IP camera product director at Dahua Technology. “That’s why we have brought four major upgrades, including optimisation of alarm accuracy, search efficiency, etc. We believe that the development of high-end WizSense will bring more value to our customers.”

Focus on real alerts and colour information

Thanks to an optimised AI algorithm, SMD 4.0 further reduces false alarms caused by large and small animals. Compared with SMD 3.0, the false alarm rate for large animals (cattle, horses, deer, etc.) is greatly improved from the previous 5% to 2%; while the false alarm rate for small animals (cats, dogs, etc.) is further enhanced from 1% to 0.5%.

Filtering out false alarms caused by non-target objects enables users to receive valid alerts for human/vehicle targets that may pose a real threat and to respond as early as possible. At the same time, the powerful AI capability of SMD 4.0 can detect the colour information of clothing and vehicle, like exterior colour of a vehicle, top clothing colour etc., which provides data support for evidence-based backtracking after an event.

Quick search for human/vehicle targets

This year’s WizSense brings a new Quick Pick feature that comprehensively enhances the efficiency of post-event retrieval by 90% compared to SMD Quick Target Search. Quick Pick (with the AI NVR) allows users to quickly search for the target of interest (human or vehicle) using AI algorithm-based extraction and comparison of clothing and vehicle colour, rather than searching from massively categorised ‘human’ and ‘vehicles’ playbacks. It significantly narrows down the search results to only present the video footage of the targets selected by users, which greatly saves search time and labour costs. It is ideal for various verticals such as retail stores and shopping malls to quickly locate a specific target during or after an event.

Smart recognition of multiple scenes with optimised image quality

With its capability to recognise monitored scenes with changing weather and lighting conditions such as rain and fog, backlight, etc., the AI SSA technology of the new Dahua WizSense can intelligently adjust the camera settings (e.g., brightness, colour, contrast, and white balance) to capture clear and high-quality image output that matches the actual indoor and outdoor scenes.

This way, installers no longer need to manually adjust various parameters of each camera – which often requires additional time and labour costs – to improve video performance. AI SSA supports multi-scene recognition, making it suitable for both indoor scenarios (e.g., warehouses, offices, museums) and outdoor sites (e.g., villas, schools, factories, shopping malls).

Save storage while ensuring the image quality of targets

The increase in monitoring resolution has prompted the demand for more storage space. Based on CBR (Constant Bit Rate), the AI Coding function of WizSense for IP solutions dynamically allocates the bit rate to provide clear target images and saves up to 25% bandwidth, compared with H.265. At the same low bit rate, WizSense AI Coding prioritises bit rate allocation over people and vehicles to ensure clear and detailed images of human/vehicle targets, while saving storage costs for users.

With the addition of the aforementioned features of Dahua WizSense, users can now receive instant alerts during an event, quickly review and search through volumes of SMD video footage for specific targets after an event, prioritise matching for the best image quality, as well as save storage with AI coding, and facilitate post-event evidence collection while adhering to privacy protection. Additionally, it creates an opportunity for systems integrators to provide comprehensive security solutions through Dahua’s WizSense portfolio that can transform video into actionable intelligence while saving users’ time and money.


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