Over-coax AI evolves

Issue 3 2021 Surveillance

Dahua Technology has been a frontrunner in HD-over-coax development in terms of resolution, intelligence and usability. To further meet customer demands, Dahua has launched the latest upgrade of its High Definition Composite Video Interface (HDCVI) series, the HDCVI 6.0 Plus. As part of Dahua’s core products for 2021, the HDCVI 6.0 Plus addresses existing monitoring challenges in the industry that will benefit both installers and end users.

With the popularity of 16:9 wide-screen displays in the market, loss in image quality due to stretching of traditional 4:3 video output has become an emerging issue, especially in surveillance where image clarity and accurate identification of targets are of paramount importance. The Dahua HDCVI 6.0 Plus has a solution. Its Real 5 MP technology offers a 16:9 aspect ratio to better fit common HD displays. Compared to the previous version’s 5 MP at 20 fps, the Real 5 MP technology provides 5 MP at 25 fps output and a large FOV (field of view).

Aside from image distortion, users are also often faced with complex lighting conditions that can adversely affect their monitoring efficiency. The traditional remedy for this issue is for installers to manually adjust the camera settings to enhance image performance, causing additional time and labour costs. The Super Adapt technology of the Dahua HDCVI 6.0 Plus makes this pain point outdated. With its capability to recognise whether the monitored scene is indoors, outdoord, or under wide dynamic range, it can automatically adjust the camera settings (e.g. brightness, colour, contrast and white balance) to match the actual scene, eliminating the need for manual configuration.

It can adapt to complex lighting environments, making it ideal for various application scenarios such as doorways, corridors, halls and even windows. For indoor scenarios, this technology can significantly enhance the brightness of dark areas in the monitored scene, capturing clear and rich details. For outdoor scenarios, the Super Adapt technology can help avoid overexposure in environments with intense lighting conditions, which optimises image quality.

Moreover, the HDCVI 6.0 Plus also boasts enhanced AI with its high-performance AI chip and advanced deep-learning algorithm, enabling accurate recognition of humans and vehicles in the monitored scene. One example of a Dahua product that features enhanced AI is the Cooper-I series. It is equipped with Smart Motion Detection (SMD) Plus that can accurately recognise people and vehicles, and can effectively filter out false alarms caused by irrelevant objects such as small animals, leaves, rain, light, etc.

Together with the Dahua HDCVI Three-in-One Camera (TiOC), SMD Plus offers an interlinked siren and spotlight that can be turned on and off simultaneously through its one-click arming/disarming functions to effectively deter intruders. It can also perform an AI search to locate targets by categories, saving a significant amount of bandwidth through AI coding and providing efficient target search without the need to review a massive amount of video footage.

In addition, this series also allows recording of customised alarm audio based on different scenarios that can be uploaded to the frontend cameras via the DMSS app. Successfully released in 2021, the Cooper-I series is positioned as an entry-level product line that offers cost-effective and AI-enabled solutions suitable to a wide range of application scenarios, making AI inclusive and available for everyone.


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