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  • HD video monitoring advantages and analysis on problems in application


        In recent years, With the demand for security video surveillance, security monitoring industry has been rapid development. Video surveillance applications from individual industries for the mass market demand from the local monitor to the cross-regional, inter-provincial RMON development has multiple advantages of IP video monitoring from analog video surveillance. With the constant pursuit of image sharpness, the HD monitor has gradually become the development trend of the industry.
        The advantages of high-definition monitor
        For video surveillance, image clarity is undoubtedly the most critical technical indicator. The sharper the picture becomes, the more obvious details, in order to better identification results. Its main advantages are the following:
        * To provide high-resolution images to get more video information
        HD IP cameras can generally be 1280x960, 1920x1080, 2048x1536 or even 2560x1920 the resolution in the same environment, high-definition can provide crisp and clear images and better able to capture the details to achieve the objectives are clear and legible.
        * Video to a wider coverage
        Monitor the scope of coverage area and the same conditions, an megapixels IP camera can replace the original 2 or 3 SD cameras, or even more. Wide viewing angle, a wide range of monitoring-intensive places such as airports, transportation, bayonet, banks, perimeter, etc., just to deploy a small number of megapixels network camera can achieve previous effects.
        * Support for higher frame rate, image smooth high
        720p and 1080i/1080p can support 60 / s, twice its image fluency than SD. Support for large screen display, 16:9 widescreen display, you can greatly enhance the user´s viewing experience.
        Provide favorable conditions for high-definition picture quality for intelligent monitoring
        HD monitor can provide more high-definition picture for more details, so as to create the conditions for intelligent monitoring applications.
        HD monitor application problem analysis
        HD network camera to make a qualitative leap in image clarity, but also brought about a series of realistic question to HD monitoring system. HD monitor to solve the three core issues: bandwidth problems, display problems, storage problems.
        Bandwidth issues
        Due to limited network bandwidth, high bit rate HD video to become its biggest promotion of the bottleneck. How to use the highest possible quality video for the lowest possible bit rate transmission is the need to address the primary problem of high-definition monitor. At the same time, due to the heterogeneity of the network, different networks have different channel characteristics, different users to enjoy the network bandwidth is not the same, or even the same user bandwidth may also be subject to change. Monitor developments in the field, a variety of user terminals have the need to connect the surveillance video, such as local area network monitor network bandwidth is ideal, the user wants to browse high-quality video; the field of mobile phone monitoring due to limited bandwidth, the more attention is low code video rate smooth. How to adapt to different bandwidth environments is HD monitoring equipment need to be resolved.
        Display problems
        Compared to standard definition video, high-definition video of the large amount of information-rich, corresponding to the decoding performance requirements are also greatly improved, such as the current mainstream PC, you can easily achieve the 8-channel D1 SD video decoding, but the front-end 1080P HD video , can barely decode Road.
        Large-scale video surveillance platform, if all high-definition video, server decoder pressure will be great.
        Storage problems
        The image resolution enhancement, is bound to consume more storage space. 1920 × 1080 @ 30 frame video, for example, the use of H264 encoding algorithm, in order to ensure clarity, stream need to maintain the in 6Mbps above, approximately 4-8 times the standard definition video. Conditions in standard-definition video, a 16-channel DVR built-in fast 2T hard to meet the storage needs of the long video in high-definition monitor, this time will be greatly shortened, will lead to increased storage costs.

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