HIS last 10 years, according to the global security market data for statistical analysis and found that the video surveillance market with double-digit growth every year increments.Without exception, is the global market growth in 2014 is projected to exceed 12 % growth rate. Video surveillance can be classified according to product,geographic regions and end-user market divided into different types.And that some of the market 's growth rate is higher than average. Products from the global video surveillance , the network camera market is still the fastest growing type of product markets. In this market , the demand for high-resolution (500 million pixels ) full real-time, 360-degree panoramic view of the fish-eye IR Dome ip cameras and fixed cameras will grow rapidly. Mini-hemispherical shape and integrated mini-gun-type infrared network camera is also very popular in the market. For most users, they are cost- optimal choice.
Early simple intelligence analysis function mainly by video surveillance equipment manufacturers the free embedded directly into the product , the function is relatively simple, mainly including video motion detection, alarm across the line , privacy shelter, people counting , moving target tracking applications , such as video analysis . IHS company in video content analysis (VCA) is the latest report that the number of free analysis of video surveillance equipment will grow rapidly in 2014 and after . But the number of video analysis applications fees will be raised . Free applications typically have mass market appeal, the basic functions of the application fee required for niche markets have a more professional, more advanced features . Such as face recognition tracking video analysis functions are embedded in the network camera in a moving object detection and recognition program that can detect moving objects within a monitored area and face recognition , and calculates the embedded program , discrimination monitoring area the existence of moving objects , and further determine whether there is a face of moving objects , and then control the PTZ movements to be tracked. Due to constraints chip processing capabilities , built-in face recognition tracking is only relatively basic tracking solution applies only to a relatively small scope of monitoring , surveillance and less number of personnel occasions . If an intruder is detected on a larger scale outdoor environment or personnel in numerous occasions and functions required to achieve recognition not only track , but also need to identify the target identity , or even the basic situation of the individual , whether poor records, such a demand would require more sophisticated algorithms , apparently relying on network cameras embedded software is unable to achieve the requirements must adopt a more professional face recognition software can achieve.In the former case the solution is more likely to be provided free of charge, but the latter will need to pay for advanced applications.
With the increasing popularity of network communication technology development and mobile smart phones and other mobile clients , video surveillance systems not confined to the forensic applications , video surveillance has become an important tool for law enforcement to deal with and more risk-averse . During the transition period IP video surveillance , network infrastructure support is the focus of one of the most critical is the power supply. Previous surveillance cameras is a local power supply, but since the POE is introduced , a common form of PoE IP cameras. 802.3AF IEEE standard is introduced in 2003 , 802.3AF allow cable loss under the conditions provided 48V/15.4W DC , the current supply of standard network cameras more than enough. Subsequent IEEE802.3at standard ( commonly referred to as POE +) terminal of the power device to 25.5W. However , this does not meet the demand on the market most of the PTZ camera . 2013 In order to meet the requirements of high power PTZ camera , a number of non-standardized POE + solutions are developed. These solutions using Cat6 ( and above ) cable excellent current handling capability. To solve the problem of Ethernet transmission distance through Ethernet Extender increases the feasible range of POE . Normal frame rate Webcams shortcoming is low network latency and frame rate , can not be applied in monitoring high-speed moving objects details, such as fast running man, the car on the highway , the bank's counter, the production line of products and so on. With high-performance compression technology innovation chip and imaging devices , support 1080P/60fps, 1080P/120fps video compression chip continuously listed , high frame rate ( 60 frames / sec ) applications will be more popular. Meanwhile, on many occasions , the light contrast , conventional digital WDR function also can not meet the demand, support the real Shutter WDR ( 2 Shutter / 4 shutter / 120db or more ) of wide dynamic network will increase demand for high-definition video camera.
Panoramic exist currently on the market there are two main network camera , one is the use of multiple lenses , low-resolution network camera mosaic of multiple sensors to achieve panoramic surveillance ; the other is a panoramic fisheye lens , based on the use of an imaging sensor . Splicing with multi-lens camera compared to the advantages of a fisheye lens / single sensor is particularly obvious: reduce costs, increase stability, reduce stream , a significant decline in bandwidth and storage space , installation , repair and maintenance work is also greatly reduced. Due to the large panoramic camera monitoring range , in order to meet the needs of human vision , often require the network camera to the original circular image for image correction, output in line with the human eye viewing habits of the video stream,and therefore , the use of a fisheye lens / single sensor panoramic camera needs a larger amount of pixels and real-time,proved less than 5,000,000 pixels panoramic camera almost unusable , only to watch the general situation of the monitored area , the details can not be observed.Basic needs is a real-time video surveillance industry , high resolution low frame rate panoramic network camera also can not meet the basic needs, therefore , high resolution imaging , real-time video output, front-end video image correction is needed to select a panoramic network camera three basic factors considerations.
Stage network video surveillance services also focused mainly on government, education , road traffic , public security, finance and banking , energy and electricity , petrochemical and other industrial users , the slow development of the SME / home user aspects . A large number of small and medium enterprises and households , the network is not without demand high-definition monitor , but existing network video surveillance products and solutions , and can not meet the needs of these customers , the high cost objective also limits the use of these customers , Therefore, the market size has not yet formed . With the popularity and the rapid development of mobile operators bandwidth and intelligent mobile terminals for SME/home personal user video surveillance market cultivation, the user will be more motivated to apply business and home network video surveillance business.
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