2013 , one million high-definition network surveillance system application will be further expanded , more high-definition network surveillance products have sprung up , most people are not from analog surveillance market scam coming out of HD storm has struck. With so many brands of high-definition IP Camera, we go from here ?
A correct understanding of the "HD " concept
HD network camera , referring to is based on digital technology, network transmission surveillance system camera , monitor and video resolution to reach at least 1280 * 720 ( that is, we often say 720P) or more below the mean for this to be false HD or does not belong to HD . Traditional analog surveillance system to monitor and video resolution Due to technical limitations , the current can only reach D1 (704 * 576) resolution effect, therefore , whether it is the number of analog camera line , are excluded from the scope of definition .
2 , the use of which the best high-definition cameras resolution
Currently , high-definition IP Camera megapixel resolution ranging from 100-1000 , from the perspective of video surveillance applications , the resolution is too low or too high will directly affect the normal use of the system , construction costs , bandwidth , and storage and other aspects of stress. Therefore, the composite price , clarity, and other factors , the 2 million pixel CMOS chip HD network camera, will have a higher price, to better meet the actual needs of the majority of users . But the same 2.0 megapixel camera , the frame rate and resolution will vary, generally 15 , 25 , and 1920 * 1080 and 1600 * 1200 are two, currently on the market is the most widely used 25 1080 1920 * the kind of majority.
3, see the camera's hardware and software features
Generally speaking, a high-performance or high- cost high-definition IP Camera , the face of the diverse needs of market users , hardware, need to have a basic voice monitoring , voice intercom , alarm input and output, 485 control and other common functions, and can access the POE, WIFI, 3G and other application modules to meet the needs of a variety of application environments . Software, should have humane setting , management, operating platform, easy to use , while the software 's features and meet the general needs of large-scale monitoring system application .
4 , the actual application effect and configuration
HD network camera manufacturers in order to facilitate the customers to understand the performance of their products , usually available online demo or video file download services , customers can watch the video by playing practical application effect for a preliminary understanding , and then high-definition wireless ip camera itself is the most important several accessories such as light-sensitive chip, infrared light, lenses, filters, switching devices for consultation, in-depth understanding of the product can be related to performance. Generally of good quality high-definition network camera will use a higher pixel sensor chip manufacturing , infrared light side products used in Taiwan , the lens uses 2 million or 3 million pixel high-end camera, and is equipped with IR cut filter , thereby improving network camera monitoring performance .
5 compatibility
Previously, the majority of high-definition network camera manufacturers are fighting each other , and did not form a unified standard , pour cause different vendors are not compatible front-end and back-end products to use , largely prevented the popularization and application of high-definition network surveillance system pace . Now the major manufacturers and users have been aware of the problem of the lack of industry and the manufacturers are also actively involved in their efforts to develop high-definition network surveillance system interface standards, and through secondary development of more products and other ways to meet the user 's compatible with . Currently, the most widely used high-definition network surveillance system is ONVIF compliant protocol and IP Camera is expected to become a platform for unified management standards . Therefore, high-definition network camera manufacturers should be able to support the latest version of the ONVIF protocol , which is compatible with more use of the product and unified management , to achieve interoperability, data sharing.
6 , the back-end solutions and products and services
A complete set of high-definition network surveillance system includes a front-end video equipment, network transmission, back-end storage , display control , decoding on the wall , a large platform management technologies such applications , the ability to provide total solutions for applications is a measure of a high-definition network surveillance products important criteria supplier . This will require suppliers to have the appropriate technical strength and has a total system solution.
From:http://www.vstarcam.com/channel/Analysis-on-How-to-Choose-Security-Megapixel-network-camera--392.html
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