What is the role of wide dynamic in video monitoring system?
A term – wide dynamic is often seen in video monitoring systems, such as the binocular 1080P wide dynamic camera module of Kingsoft. At present, wide dynamic technology has been widely used in various surveillance camera application scene devices. So what does this “wide dynamic” really mean?
Wide dynamic technology refers to the technology that an image is exposed twice at the same time, one time fast, one time slow, and then synthesized. The purpose is to make the brightest and darkest parts of the scene visible at the same time. The range of use is often found in the “bright” and “dark” ranges. The larger the dynamic range value, the greater the difference between light and dark in the scene, and the higher the requirements for the camera.
In the scene with high dynamic range, the general surveillance camera will expose the bright and low bright areas at the same time. However, in order to see the dark areas clearly, the overexposure often occurs, so the highlighted areas will be overexposed to white; If you want to see the highlight area clearly, you need to reduce the exposure rate, but low exposure will make the low bright area black due to insufficient exposure.
Wide Dynamic can expose the high and low bright areas at the same time through relevant technologies, without overexposure of the high and dark low bright areas. Through the use of multi frame exposure, low delay dual data output structure, combined with fusion algorithm and ghost removal image processing technology, the image brightness can be adaptively adjusted according to the dynamic range, greatly improving the brightness of dark areas, backlight face brightness, and restoring the details of the high bright areas, It can achieve an ultra wide dynamic range of up to 160dB, and optimize the moving ghost caused by multi frame fusion.
At present, camera modules with wide dynamic technology have been widely used in highway toll collection system, electronic police system, bank monitoring system, face recognition attendance system, intelligent face recognition access control system and other fields.
Shenzhen Jinshikang Technology has devoted many years to the field of camera modules, specialized in the research and development and design of camera modules, invested a lot of development and research work in face recognition technology, camera monitoring and other fields, and provided 100DB wide dynamic cameras, 1080P wide dynamic cameras and other camera modules. It can be applied to face recognition attendance machine, intelligent face recognition door lock, and other high-definition image monitoring equipment systems. Welcome the consultation, cooperation and exchange of enterprises and manufacturers.
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