Megapixel ushered in the explosive growth of high-end projects,whether government or civilian control,and millions have been a high-definition monitor rapid spread,affecting almost all companies and individuals in the security sector development.Today , both from a technical point of view or the market demand,the timing of millions of high-definition monitors are ripe. On the technical side,that represent a minority of domestic enterprises has tackled all aspects from the front camera to the back-end storage, and network transmission problems, to achieve a clear picture quality,low-light , wide dynamic range and other functions, and the results are significantly better than the traditional analog cameras , with a high price. Second, from the customer's point of view, analog monitor can not meet the market definition,intelligence requirements, Megapixel surveillance has become the market mainstream selling point . Megapixel network features: can support two kinds of H.264 streams,an MJPEG stream, suitable for Local,Internet and Cross- platform access;using CMOS sensor , support 720P (1280 * 720), 640 * 360 , 320 * 180 real-time video encoding ; external microphone or pickup , remote monitoring live sound;may also be external speakers,remote transmission of sound to the scene , to achieve two-way intercom function, supports echo suppression function ; 802.11 b / g / n protocol , built-in wifi module can be flexibly set up wireless monitoring environment ; maximum support 32GSD card storage , enabling alarms and alarm video camera ; support four area motion detection , and external alarm detectors, to achieve the full site azimuth arm ; built-in WEB server, use one port to send all the data , user-friendly network settings ; support to watch videos on a variety of device types of browsers , such as IE, Firefox, Safari , etc. ; may use part of the smart phone to watch the video screen ; manufacturers for each device is assigned a dynamic domain name, the device connected to the public network , you can access the device using the domain name ; manufacturers provide free client software , support Multi-view , long time recording , video playback and other functions.
Megapixels HD ip camera has the following benefits: using megapixels level sensor , can get more video information , generally up to 1280 × 1024,1392 × 1024,1628 × 1236 or 2048 × 1536 resolution ; image display higher quality , better able to capture the details ; progressive scan CCD / COMS dynamic picture performance smoother ; supports widescreen HDTV output mode ( 16:9 ) ; wider coverage , the same monitoring area can replace the original multiple fixed point camera and a full range of cameras. Sensor performance depends on the camera's resolution , CCD sensor chip compared with two CMOS , CCD sensor sensitivity , resolution, noise control , high-quality image output , dynamic imaging performance is better than COMS, so the vast majority of professional select the CCD camera is still a light-sensitive chip , and high-definition megapixel network cameras optional Sony ICX series most advanced ultra-low sensitivity with illumination photosensitive chip to obtain a clearer image in a dark environment , the ordinary cameras can not be achieved.
Procurement and use of millions of high-definition surveillance cameras should be noted that there are issues : the video surveillance system, select the appropriate high-definition megapixel network camera lens is also very important. The diverse types of security surveillance camera , specifications are more dazzling, choose a suitable lens monitoring project is very important. It should be noted when choosing to anti- fake ; should match with the camera , especially the flux F values match , the sensitivity of the camera to achieve the desired effect ; megapixels cameras are generally required to buy a matching corresponding megapixels camera ; Appearance Material whether the CMOS / CCD specifications and interface matching,coating is intact , watching the lens type ( spherical / aspherical ) ; application of environmental considerations related to the selected type lens wide-angle lens , standard lens , telephoto lens , zoom , fixed focus lens. HD camcorder to buy millions of points to note : The exact understanding of the actual bandwidth and transmission rates , such as high-quality images under quantitative indicators and scientific assessment of network resources for the project ; using CCD or COMS sensor chip , if using a CCD chip solution , what kind of (single / multi-channel ) " output balance " technology, the frame rate meets the actual needs ; problems with optical lens , supporting the use of industrial grade must be millions of lenses or can not reflect the advantages of HD quality video camera . Select Megapixel cameras depends on your specific needs , from the choice of irradiation distance , choose a different environment. Choose different uses , etc., need to be considered . If you need to pay attention to the following parameters from cost considerations , then the size of the sensor ( the larger the more expensive , the mainstream has 1/2.7 , 1/3 , 1/3.2 , 1/4 , etc. ) ; processing chip solution ( different program , the price is not the same, of course, the image processing conditions are different , the situation is different heating ) ; comparing the illumination ( light sensitivity of the camera determined ) ; SNR ( determined image clarity ) and whether the wide dynamic effects ( indoor shots need to be considered when the outdoor scenes ).
In the general security monitoring system installation, installation and commissioning methods Megapixel network camerasand SD network cameras are basically the same , but must pay attention to good lens optional , because of poor quality of the lens, or optional good, great extent will affect the clarity of the screen , such as infrared night vision camera system is the best choice of infrared lenses, and 1/3 inch CCD usually equipped with 1 /3 inch lens, 1 /2 inch CCD usually equipped with 1 / 2 inch lens, focusing the lens installation commissioning must be fine, especially in the back focal plane of the camera to align , often focusing lens unclear cause blurred image , reach high-resolution requirements. Another network camera shield can not be ignored , the front glass shield gun can not be used generally flat glass , but must adopt better optical glass , flat glass for the general resolution of the image has a very powerful role in weakening , optional ball casing should be noted that the transition must be smooth and spherical curvature , it is best not to put the lens at the upper edge of the sphere , light refraction larger force here , even seriously affect the clarity of the image . It is important that no matter what kind of cover, the best light as low as possible within the enclosure , the distance between the lens cover is as short as possible , so make the front of the lens to reduce light pollution to a minimum , help to improve image clarity. From a practical point of view the product and system configuration , megapixels level HD application has been basically formed , for example, the front of the millions of HD ip cameras, transmission , interfaces , coding, image processing applications , output, display , and other products on the technical aspects , and the application system platform, based on an analysis of the topic , basically have the foundation to run. Although the industry is generally believed that high-definition monitor is a must and market development trend of the industry , but the real market applications, various types of industrial users are currently no specific practical application of psychological preparation.
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