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  • HD network cameras on the market, the selling point technology

        With the emergence of high-definition network cameras, smart analysis has begun to slowly enter the security monitoring system. HD network camera or being implemented intelligent analysis capabilities: video shielding, video loss detection, video change detection, The fuzzy video detection, video motion detection, entrances demographics, crowd movement and congestion recognition Item legacy identify intrusion identification, and so on. These features are also added to the HD IP camera more selling point. The development of high-definition network camera technology is to promote the core strength of the entire high-definition video surveillance, and to learn from the following aspects:
        Level of resolution is judged first and foremost a condition of the sharpness of the image, the lowest resolution of high-definition web camera is 720P, the number of pixels is about nine times the CIF, 1080i/1080P number of pixels is about 20 times the CIF. The development of millions of high-definition internet camera can also be rapidly and we are in contact more megapixels, 1.3 million pixels, 2-megapixel, 3,000,000 pixels 5,000,000 pixels 8,000,000 pixels already on the market appear, or even tens of millions and tens of millions more pixels also began the horizon in the surveillance industry. It can be said that the people in the pursuit of high-definition on the road and never stop.
        CCD and COMS sensor
        CMOS sensor response speed is faster than CCD, CMOS characteristics of the large amount of data that is more suitable for high-definition monitor. From a market perspective, the traditional manufacturers like CCD SONY and other manufacturers also have begun to target toward CMOS sensor, which means HD CMOS network camera will the HD monitor industry in the future in a unique style, which is perhaps stage victory can be seen as the CMOS sensor.
        ISP image processor
        By integrating the ISP, not only can significantly reduce the system cost, more greatly enhance the stability of the video, optimize images in optical performance. This is extremely important for enhancing the quality of high-definition IP video camera imaging.
        Encoding: JPEG/MPEG-4/H.264
        Present in video surveillance systems, video compression have JPEG/MPEG-4/H.264 three kinds of different ways of encoding configuration, depending on the product positioning. For example: the lower stream H.264 video compression format D1 image transmitted to the remote real-time monitoring to the customer, while megapixels, H.264 video compression format real-time image incoming storage server for video thanks to the H.264 compression standard. In the case of the same amount of data, with respect to the MPEG4 standard, the H.264 compression capacity after only MPEG4 compression of 20%, this means that the same storage capacity of the storage of H.264 MPEG4 5 times, which can greatly reduce the cost of the user´s storage, and the transmission quality of the image does not change. Megapixels JPEG images can also be transmitted alarm, easy afterwards enlarged confirmed, looking for suspicious objects.
        Transfer Protocol
        With the growing popularity of high-definition network camera, standard network transport protocol has been started by the major domestic and foreign security firms agree. Whether ONVIF or PSIA, are the spontaneous organization formed standards, or has a very important meaning, but from their point of view to get more and more enterprises response. Within the next few years, the standardization will become a high-definition network camera to the market permits.

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