Analysis: how to choose high-definition high-definition camera
In a monitoring project, the size of the scene is closely related to the size of the monitoring system. However, when the network monitoring is cleared from the D1 standard to the HD HD stage, how does it depend on the proper format for the various applications?
From the beginning of 2009, the monitoring system into the digital network monitoring stage, IP has become synonymous with the type of digital network monitoring, creating a picture format standardization and consistency of the trend, from CIF to 2CIF to 4CIF format is more and more wide, clarity and resolution are also increasing. In compatibility to D1; (720x480) IP image monitoring has gradually become the standard, so there is a SD (Standard Definition) is defined by the analysis of the standard, down due to the monitoring requirements on the details of the demand, so it is the HD (High Definition) high definition format also followed appear in the monitor screen format, only in HD format diversity, and generated some controversy and application problems of the system integration compatibility and screen display. Thus, in the trend of digital broadcasting and television, the format of 720P and 1080P in HDTV digital TV, and the wide wide screen display of 16:9 become the main format of HD hd.
Why care about the format of the monitor mark and HD?
Many IP cases are thought to monitor all the images for HD is the best way, but that is not wholly so that all IP monitor these images are the main format of image surveillance cameras have [see], [and] see more [see] the results, but in the actual monitoring point the application, which are all three conditions to exist at the same time? This is controversial and a lot of discussion, some people even think much more to see and see cleanergy can have both and both are unnecessary, but actually held up the three concurrently or not, the key lies in most of the two points and the necessary budget on the basis of the conditions to the development of the two key points, it is more important to how the condition to really grasp how to depend on what kind of format. This is what we will discuss next, based on the content.
Depending on the format of the standard and HD formats, what are the conditions?
In the network monitor; SD SD and HD on HD basis has many levels, as we enter the next stage of various industry IP monitoring application lies before the subject of course to make the picture on the subject, according to Qing and HD make a clear explanation to explain.
[target objects, necessary requirements]
First of all we use depends on the SD or HD video is the first on the basis of monitoring objects [requirements] objects will be what is?? or? If it is part of the details? Such as face or body or clothing??? Or just want to know can judge people good? These are all the people of the subject, but the demands of different image represents the demand different standard, but also represents the basis conditions and results. Another example of objects is an area of a scene, it depends on the conditions will be the same?, also want to consider the details or whole? Is static or dynamic? Or simply as long as the items discrimination is good, it is the same problem in dynamic or static?? big or small rough this is a subtle? Are depends on SD and HD format, the first to be considered on the basis of conditions.
[size of monitoring system]
Another second is [environment] depends on the basis, regional environmental monitoring is complicated? Or simply? Whether the complex environment to screen can be included in all parts of fine or rough? Contain good? Is outdoor or indoor environment indoor depth enough? We use HD depth or standard you can cover it clear view? The environment is bright or dim? This will be about us in the construction of standard definition and HD selection and selection, there is a feature of the environment will not change? Such as light change? Content change? Because of changes and lighting, we must be careful to decide and SD in the environmental conditions on the choice of hd.
[size of monitoring system]
Usually this is a relatively easy to cause the owners or contractors to the part, because the size of the monitoring system, directly represents the number of cameras, but also represents the distribution ratio of HD and SD enough? There is no consideration. The benefits of HD format. Because in the picture of defining the scope of a group of HD camera can cover two group SD camera coverage, thus monitoring the size of the system is also a system depend on the number of cameras and high-definition SD for selection according to the conditions of.
[IP monitoring transmission capability]
According to the fourth condition [IP monitoring transmission capability], we often hear some problems on the IP monitoring system, that is, the resolution should be smooth. Means that the network monitor to see clearly to run the network video stream to achieve the ideal, the basis is very heavy on consideration, if using a high-definition camera, but support network bandwidth and network environment to SD, the HD used according to the point should not be there, that is to say if the network transmission capacity conditions, the standard depends on the problem and HD is not exist, it is in the application must care conditions.
[overall budget cost considerations for mark and HD]
The last decision to mark and clear is based on the overall budget cost of the mark and HD, which also depends on the standard in the monitoring system