See how panoramic technology improves video surveillance performance and efficiency

It is a real challenge to secure large areas with adequate camera surveillance coverage. Pan-tilt-zoom (PTZ) cameras may not provide the ideal solution for these application requirements. A PTZ camera can only point in one direction at a time, so video data may not contain important events that occur at the same moment in another part of the coverage area. In contrast to this, panoramic cameras provide continuous monitoring coverage in a wider area. A single 180° or 360° panoramic camera can cover a large area, and its coverage area often requires many traditional cameras, multiple PTZ cameras, or Both programs can be realized. In addition, the panoramic camera allows the user to record the entire wide field of view, and at the same time it can digitally zoom in multiple areas of interest. This is simply not possible with a single PTZ camera.

Currently there are two types of panoramic cameras available on the market: Fish-eye panoramic cameras (also known as ultra-wide-angle panoramic cameras) and multi-sensor panoramic cameras, both types have their own advantages and disadvantages.

The fisheye panoramic camera uses a single CMOS sensor and a fisheye lens. With related software, it can be used as a 360° or 180° camera. This requires dewarping techniques in integrated lenses and software. The fisheye panoramic camera has limited resolution and currently offers only 1.3 million pixels, 3 million pixels and 5 million pixels.

The multi-sensor panoramic camera employs dual sensor or four-sensor technology. These cameras are aligned with each other and provide a 180° area of ​​view area. Currently, the highest resolution of this technology product in the market is 40 million pixels. Compared to fisheye cameras, image distortion is one of the many advantages of multi-sensor panoramic cameras.

As the panorama technology continues to mature, the advantages of these cameras will surely increase. The resolution has rapidly increased from 8 million pixels to 20 million pixels, and up to 40 million pixels are now available. Higher resolution not only allows the camera to see farther, but also gives them the ability to capture precise details. If a 20-megapixel panoramic camera can replace multiple analog or standard IP and/or VGA cameras, it is easy to understand that the 40-megapixel panoramic camera will provide a wider and more continuous field of view coverage.

Panoramic camera surveillance coverage area and pixel density Four 2-megapixel camera with 8mm lens, the best height from the ground is 10-25 feet, as far as possible. The 37° vertical field of view can cover large areas.

Panoramic Camera Coverage and Pixel Density Four 5-megapixel cameras with 8mm lenses, 10-25 feet from the ground, and as far away as possible. The 37° vertical field of view can cover large areas.

At present, in the panoramic megapixel camera market, in addition to the ever-increasing high-resolution resolution, more camera control and video functions continue to emerge. Wide dynamic range (WDR) can monitor and record more precise scene details in almost any lighting conditions, including bright and dark areas in the same field of view, which is often a major challenge in mainstream video surveillance applications. Moreover, the pixel fusion mode allows adjacent pixel charges to be combined to achieve faster speeds and improve signal-to-noise ratio. With day/night operation, a single camera can work 24 hours a day to provide usable video data. In addition, H.264 compression technology enables more data to be transmitted quickly over a given bandwidth and stored more efficiently.

When considering the deployment of panoramic megapixel cameras, it must be realized that they do not have the same standard. It is very important to make full use of key functions, such as H.264, full day/night operation with mechanical infrared filters, and the ability to integrate advanced video management systems (VMS); in addition, the use of special functions cannot be underestimated. Refers to features that are not available in all pan-megapixel manufacturers, but these features clearly provide better performance and higher image quality.

In addition, other technological advances developed by industry leaders cannot be overlooked. These advances include miniaturization. For example, our latest 12-megapixel panoramic camera can be installed in a 4-inch hemispherical dome. In contrast, the previous 8-megapixel panoramic camera requires a 5-inch hemispherical dome. Optics is another important consideration because the four megapixel lenses require great precision to achieve a 180° field of view, each on a different CMOS. Because each sensor must accurately cover a 45° viewing angle, each lens must be perfectly designed to precisely match the CMOS. In addition, other challenges include: to meet the bandwidth consumption of larger data transmission and outdoor use in low light conditions. A careful comparison of products from different manufacturers will reveal that each manufacturer can successfully solve these challenges.

For special applications in unique areas, the panoramic megapixel camera establishes a new cost-saving benchmark. It requires less software licenses and a relatively simple network infrastructure, and requires no additional poles, wiring, and power supply during installation. Lower infrastructure costs can increase the overall return on investment, and at the same time achieve good operations and functions, and strengthen safe operations. The professionally designed and built panoramic megapixel camera solution is suitable for a wide range of mainstream video surveillance applications, providing superior value, performance advantages, and cost effectiveness.

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