2014年1月19日星期日

HD IP Camera with large analytical simulation

HD IP Camera with large analytical simulation
HD IP Camera mainly collected by the video , consisting of several parts of video encoding , and network transmission. Compared with the high-definition network camera analog cameras , network cameras, high flexibility , high performance .
IP Camera and analog cameras difference is mainly reflected in four aspects:
1, the difference between the quality of pixels to simulate using a CCD as the image sensor, is restricted in certain technical bottlenecks quality in general, analog cameras are now the highest 700TVL, SD D1 will achieve results in the broadcasting standard. The IP Camera with CMOS sensor main components , can be done megapixels picture above , the current GM is one million to two million in the majority, there are newer technology products in the market, 5,000,000 , 8,000,000 , estimated soon there are millions of quality cameras will be put into the market , we understand that the United States T1 10MP camera company has completed the test , frame rate up to 15 frames.
2 , analog cameras are not given in the management software and custom intelligent analysis , such as the definition of its use function, because there is no single IP but also to remote browsing inconvenience.
3 , the control device , such as PTZ, ball machine is simulated in wiring an additional control line to the codec and the ball rotation and zoom machine , and the IP network camera is not required , the network line can be used directly , or to save a lot of man-hours and cabling costs, especially in the larger project , the cost of IP Camera engineering is particularly prominent.
4, SDI although there are high quality , and there is no delay, but its compatibility with certain restrictions , it is seldom used in the country . IP Camera brands at home and abroad in the majority and therefore not become mainstream SDI , SDI , and analog camera wiring is also basically the same , with the line to increase the cost of construction and future troubleshooting are checked seem a disadvantage.
In general , high-definition network camera and SDI cameras have their own market, and focus their applications , they are complementary rather than replace relationships.
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From:http://www.vstarcam.com/channel/HD-IP-Camera-with-large-analytical-simulation-437.html

Home IP Camera products , which has several

Home IP Camera products , which has several
Home Network Camera Product Category:
A wireless network camera
Wireless IP Camera and wireless routers need to work together , a wireless router can be requested on the Internet .
The advantage of using WIFI or 3G wireless ip camera : no wiring, installation and increase the number of cameras are more convenient , Internet costs are lower. Such home network camera market trends and mainstream.
Second, the wired network camera
Wired network camera directly plugged into the network port or router can access the Internet will be able to work properly. The advantages of using a wired network camera : the technology is mature, industrial network cameratechnology directly ported over, afraid signal interference, stable and reliable , relatively low cost Internet . The disadvantage is the complexity of installation , wiring needed , can only be accessed through a computer , using a limited range , is not suitable for the modern family.
Home Network Camera to buy points
First, high-quality products
Today thief stealing technology are high , you want to prepare for a professional thief stealing the technical content of the camera, than thieves "professional level", otherwise it is only skin deep , as to let thieves steal your deal .
Second, user-friendly operation
Secondly , a simple operating system and mode of operation can be users of all ages . Far away from mass consumer security products , a large part of the reason is because of its professional, highly technical and complicated to operate . Buy a home everyday things , of course, the more fool operation as simple as possible .
Although security products than those high-tech products , but also has some high-tech structure , when you buy the product , be sure to pay attention to the product 's operation, try to choose a convenient , user-friendly products . Lest buy back, loaded it , do not use it on vain.
Third, stable quality
As the saying goes : . " Afraid of ten thousand , afraid of the event ," You put on a monitor , 364 a year to fill the normal operation , if , on that day, your monitor due to objective external reasons, such as line instability, insufficient voltage etc., and cause failure . You know , the thief can not because of your equipment failure , not to patronize you .
Fourth, the degree of adaptation to the environment
Ability to effectively resist all kinds of environmental interference , not due to various disturbances , which cause the device to malfunction , which is also very important.
Fifth, reasonable price
Although now a general increase in living standards , but for the majority of people, the reasonable price or civilian monitoring market price must be valued that home monitoring equipment should be thousands less.
Sixth, support for wireless networking
Finally, if supported by the wireless network monitoring , there will be an additional plus. In the home monitoring products, what kind of products to be One ? Since it is a network of surveillance cameras , then the product will meet a variety of network protocols, not only that, a good wireless networking capabilities highlights the convenience of civilian products . Easy to install, no wiring, a wide range of applications.
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From:http://www.vstarcam.com/channel/Home-IP-Camera-products-which-has-several-436.html

HD IP camera expand the range of applications each year

HD IP camera expand the range of applications each year
Video surveillance allowed into the digital era of limitless energy technology innovation more . When the demands of increasingly high -definition , and the ability to realize more and more the strong , the transmission mode and the ability to gradually become a major factor affecting the development of video surveillance systems . Developed in recent years based on the HD-SDI CCTV meteoric rise and cause hurricane trend in the industry , greatly influenced the future trend in video surveillance . But the continuous development of network technology for the transmission of the long road of video surveillance Jing chop chop spine ,HD IP Camera will defend its territory in a very long time .
HD IP camera growing user base
Advantages of IP surveillance is interoperability, remote monitoring and flexible networking. Remedy , you need to identify the user groups. Currently the main network video surveillance market concentrated in a few major industries public security , telecommunications / operators, financial , transportation , prisons , power, industrial enterprises , and education. By the government agencies and the public security led " Green City" project, the majority made ​​it clear that you want to select a network monitoring. Financial and transportation industries in recent years has shown a clear demand for a large networking , networking has undoubtedly become the primary choice. The education sector due to improved network infrastructure tend to network monitoring . Transportation industry is mainly concentrated in the security checkpoint system and electronic police system , this system is often used standard definition network cameras or analog cameras in each lane are required to configure a camera , license plate recognition rate, more than the number of cameras installed , high system costs . The introduction of high-definition network camera , a high-definition network camera can monitor multiple lanes , saving a number of cameras installed to improve the license plate recognition rate. Industrial enterprises and residential buildings scattered , independent, industry characteristics not obvious, independent product selectivity is weak, so the tendency is no less significant at several industries .
However, with the continuous improvement of the overall security needs , not only to get high security guarantee in the financial, transportation , government agencies , etc., for like factories, living quarters and other relatively low-end places have gradually been asked . Therefore ,HD IP camera will cover all areas of the security market , the user base has grown .
Product with incomparable superiority , market prospect
After years of market-driven , people for the advantages of IP Camera , has already heard , the network camera has the advantage of including the following areas: signal processing and more efficient : pre- coding , coding compression from the original image to shorten effectively reduce signal loss ; directly or indirectly using progressive scan technology : Effective enhanced dynamic image reproduction capability , reducing image distortion ; network power PoE: single cable to transmit data , but also for power supply, wiring convenient, effective long- term lower maintenance costs ; supports two-way audio : provides high compression ratio composite audio and video streaming , audio capture and also has an integrated speaker products to meet a variety of audio mining, voice intercom demand ; facilitate integration of multiple functions : as intelligence analysis , alarm , WIFI, 3G, ISP technology, technology integration provides a more open platform ; information Security: IP Camera available data encryption, watermarking and authentication technologies for video information security management, through video detection , alarm linkage mechanism to prevent network interruption, vandalism and other failures ; standardization: network camera can be easily integrated PSIA, ONVIF international standard protocols , video surveillance effectively promote international standardization process.
Current development of HD IP Camera with excellent performance and a group of products with special features , there are panoramic cameras, intelligent traffic cameras, intelligent analysis of video cameras, automatic tracking ball machines and other products. Panoramic camera using HD cameras plus a fisheye lens solutions , to ensure that the control environment without blind spots ; intelligent traffic cameras can capture license plates, license plate recognition and is widely used in road traffic ; intelligent analysis of high-definition video camera by analyzing the source does not meet the screening rules of conduct of people and things , and then the police, monitor and control automation ; automatic tracking ball machine through intelligent analysis algorithm to track moving objects , automatic monitoring.
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Frome:http://www.vstarcam.com/channel/HD-IP-camera-expand-the-range-of-applications-each-year-434.html

Seen through the network HD clear outlook upcoming era

Seen through the network HD clear outlook upcoming era
A sensor chip demanding
Over the years , high-definition Network camera has become a hot word in the field of security fired . It seems in the current network monitoring , if not with "HD " word , then almost had earlier declared the era of the fate of being eliminated . However, shouting Network HD for so long , but also enjoy a lot of network HD , but if we want to suddenly asked : Network HD in the end is what configuration ? It also more than ordinary standard definition cameras to achieve what is progress? Here , we have to thin the HD IP camera "Anatomy " to see the Network camera in the end has a kind of magic.
A sensor chip demanding
For a surveillance camera , its sensor chip is undoubtedly the most important. Under normal circumstances, we often find the shadow of the CCD chip in an ordinary analog camera. But for high-definition IP Camera , it may not have such a " picky " the. Currently , high-definition cameras for both the CCD chip or CMOS chip , it belongs to an application surface relative to the average state.
Therefore, it can be expected that in the future for a long period of time , these two types of sensors will be a major force in high-definition camera. Only because CMOS cheaper to produce more convenient features, so in a relatively low-cost surveillance cameras , we always can often see its shadow . And because the CCD sensor is more sensitive responses in color , clarity and more good, so for some of the higher -pixel , high-end cameras integrated more capable , we will see more of the shadow of the CCD chip .
In addition , the sensor chip size is also very important but often overlooked aspect of the different sizes of lenses, the lens has a correspondingly different amount of light . So high-definition Network camera , the lens with it is very important , if not with words , it is likely both will be other HD efforts destroyed. Thus , with the most appropriate lens , it is actually an important part of the sensor can not be ignored .
More delicate image processing
Since it is a high-definition camera , then the corresponding picture processing capacity is certainly indispensable. For a high-definition IP Camera , the quality of the decision by many factors , but the most important manifestations mainly lies in three areas: compression technology , the effect of TV lines , and the role of the ability to stream .
Ability to enhance compatibility terminal control
First is compression technology. As we all know , after experiencing a long-term development , MPJG-4, and H.264 is our current most commonly used compression techniques. If you compare the features from the horizontal , the latter for the continuity of the video can provide more help , and for a single video imaging capabilities , the former has a stronger performance. However, as a rising star in compression technology, H.264 overall performance is still a lot higher than MPJG-4 . And with the advent of H.265 technology, we have reason to look forward to in the compression part , we can achieve a more perfect.
In conventional surveillance cameras , the 480 line is a well-recognized definition baseline. With Sony, Samsung and other high-end devices continuously released. Numerical HDTV line is constantly refreshed with . In the current market , more than 600 lines of surveillance cameras is no longer fresh. However, the face of the current 1000 line has grown to hundreds of TV resolution, I am afraid that the current definition cameras, does not make us wait too long .
HD Network camera
Because of the lag is also a complex network transmission processing time HD equipment unavoidable problem . Now, with the development of the overall IP Camera technology, the delay has been able to control the basic equipment within 300ms, thus maximizing technology ensures real-time . For a more extensive network monitoring applications is also a very effective foreshadowing .
Ability to enhance compatibility terminal control
As networks become increasingly widely used in high-definition equipment , in order to obtain a more convenient control and maintenance, how to improve their products for compatibility with web browsing devices has become the focus of attention of many manufacturers . From the current application trends, replaced by common browsers has become a lot dedicated software development orientation of the device , which is used to maintain user and device , compared to the traditional common devices are undoubtedly a revolutionary advancement .
At present, China 's high-definition network surveillance system is actually still in a very early infancy. But as the future pillars of the mainstream that we do not already become an indisputable fact. But especially in the SDI products come under the same immature status quo, which is both a challenge for network HD , but it is also a facilitator . In such a competitive environment and needs , we have every reason to believe that the network will in future high-definition applications, bring us more surprises.
Baby Monitor Camera Baby Monitor IP Camera Network Camera
Frome:http://www.vstarcam.com/channel/Seen-through-the-network-HD-clear-outlook-upcoming-era-432.html

Seen through the network HD clear outlook upcoming era

Seen through the network HD clear outlook upcoming era
A sensor chip demanding
Over the years , high-definition Network camera has become a hot word in the field of security fired . It seems in the current network monitoring , if not with "HD " word , then almost had earlier declared the era of the fate of being eliminated . However, shouting Network HD for so long , but also enjoy a lot of network HD , but if we want to suddenly asked : Network HD in the end is what configuration ? It also more than ordinary standard definition cameras to achieve what is progress? Here , we have to thin the HD IP camera "Anatomy " to see the Network camera in the end has a kind of magic.
A sensor chip demanding
For a surveillance camera , its sensor chip is undoubtedly the most important. Under normal circumstances, we often find the shadow of the CCD chip in an ordinary analog camera. But for high-definition IP Camera , it may not have such a " picky " the. Currently , high-definition cameras for both the CCD chip or CMOS chip , it belongs to an application surface relative to the average state.
Therefore, it can be expected that in the future for a long period of time , these two types of sensors will be a major force in high-definition camera. Only because CMOS cheaper to produce more convenient features, so in a relatively low-cost surveillance cameras , we always can often see its shadow . And because the CCD sensor is more sensitive responses in color , clarity and more good, so for some of the higher -pixel , high-end cameras integrated more capable , we will see more of the shadow of the CCD chip .
In addition , the sensor chip size is also very important but often overlooked aspect of the different sizes of lenses, the lens has a correspondingly different amount of light . So high-definition Network camera , the lens with it is very important , if not with words , it is likely both will be other HD efforts destroyed. Thus , with the most appropriate lens , it is actually an important part of the sensor can not be ignored .
More delicate image processing
Since it is a high-definition camera , then the corresponding picture processing capacity is certainly indispensable. For a high-definition IP Camera , the quality of the decision by many factors , but the most important manifestations mainly lies in three areas: compression technology , the effect of TV lines , and the role of the ability to stream .
Ability to enhance compatibility terminal control
First is compression technology. As we all know , after experiencing a long-term development , MPJG-4, and H.264 is our current most commonly used compression techniques. If you compare the features from the horizontal , the latter for the continuity of the video can provide more help , and for a single video imaging capabilities , the former has a stronger performance. However, as a rising star in compression technology, H.264 overall performance is still a lot higher than MPJG-4 . And with the advent of H.265 technology, we have reason to look forward to in the compression part , we can achieve a more perfect.
In conventional surveillance cameras , the 480 line is a well-recognized definition baseline. With Sony, Samsung and other high-end devices continuously released. Numerical HDTV line is constantly refreshed with . In the current market , more than 600 lines of surveillance cameras is no longer fresh. However, the face of the current 1000 line has grown to hundreds of TV resolution, I am afraid that the current definition cameras, does not make us wait too long .
HD Network camera
Because of the lag is also a complex network transmission processing time HD equipment unavoidable problem . Now, with the development of the overall IP Camera technology, the delay has been able to control the basic equipment within 300ms, thus maximizing technology ensures real-time . For a more extensive network monitoring applications is also a very effective foreshadowing .
Ability to enhance compatibility terminal control
As networks become increasingly widely used in high-definition equipment , in order to obtain a more convenient control and maintenance, how to improve their products for compatibility with web browsing devices has become the focus of attention of many manufacturers . From the current application trends, replaced by common browsers has become a lot dedicated software development orientation of the device , which is used to maintain user and device , compared to the traditional common devices are undoubtedly a revolutionary advancement .
At present, China 's high-definition network surveillance system is actually still in a very early infancy. But as the future pillars of the mainstream that we do not already become an indisputable fact. But especially in the SDI products come under the same immature status quo, which is both a challenge for network HD , but it is also a facilitator . In such a competitive environment and needs , we have every reason to believe that the network will in future high-definition applications, bring us more surprises.
Baby Monitor Camera Baby Monitor IP Camera Network Camera
Frome:http://www.vstarcam.com/channel/Seen-through-the-network-HD-clear-outlook-upcoming-era-432.html

Network video surveillance into people's lives should be

Network video surveillance into people's lives should be
Over the years, the network video surveillance in low- consumption can be said to be " mixed " silent, perhaps even make a lot of concern for network monitoring is not a lot of people think that the progress of the road network monitoring is not squeezed in technology bottlenecks has tended to stagnate under ?

The current network video surveillance in large environments or more high-end application market, compared to the previous two years have been made ​​very significant progress . Especially with the widespread application of these two road traffic monitoring technology , network monitoring device can be said to bring a huge play space . Objectively speaking , the network video surveillance is still very broad audience , whether it is large-scale environmental monitoring applications , or even small environment of security and communication with the family . Network cameraare actually great advantage

Network video surveillance application environments exist mostly following two features: the first is the geographical area covered by a vast , under normal circumstances , the advantages of today's network video surveillance monitoring in the large field of play is quite sufficient . Many of the large public places , or urban management have enjoyed a network monitoring IP camera gives us all the benefits ; Second, is the ability to build a separate network transmission systems and line units. Especially for the transmission line , because a large part of the advantage is that the HDNetwork camera , and high-definition for the line but has a lot of challenges. Therefore, if there is no dedicated line , it is very difficult to monitor the network capacity to play . Thus it also determines the current network monitoring "big scene " line.

Currently, the network video surveillance Although we quarrel has been hot . But the temperature is in the field of civilian control has been difficult to heat up. Such a vast market , but the delay on behalf of advanced equipment is difficult to fully involved . In a lot of people seem really is a very regrettable thing. However , Jingli has a different view.

In the current case , the field is divided analog monitoring and network monitoring is quite obvious. In some small analog surveillance environment or traditional areas still dominated many markets. For some large-scale environmental monitoring , network monitoring is left to get involved . For small environments , itself a huge investment for network monitoring is probably a waste. Of course, if the original network transmission equipment , if difficult to support their needs , then no doubt that this kind of waste further.

Network monitoring terminal used in road

Therefore, when we should choose according to their own needs. For example , analog control although there are some limitations , but it is to save money , you can track the viewing monitor , which is not available in network monitoring . The network video surveillance applications easier and more suitable for off-site monitoring, but its cost is very large . In particular, only one monitoring requirements for some land users, network video surveillance IP Camerasometimes really only play a role in analog monitor . Instead, the use and maintenance is a no small cost . Even if changes in the future , the environment is not too small additional overhead occurs . So, we do not even need to go blind pursuit of fashion which we are not very need.

In fact , we find that through interviews . Today's network monitoring Network camera are slowly into our lives , and security market itself is also undergoing big changes. But, this change is a more reasonable , more detailed changes. Such a shift will simulate a more detailed breakdown of the network , but also let us see more clearly what they need to change . Therefore , the choice of equipment, or as we often say : whether advanced or backward , as is appropriate , and that is our right choice.

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Frome:http://www.vstarcam.com/channel/Network-video-surveillance-into-people-s-lives-should-be-431.html

NVR network camera work together to achieve a new leap perfect partner

NVR network camera work together to achieve a new leap perfect partner
That Network Video Recorder NVR is a network DVR abbreviations. NVR 's main function is to receive through the network equipment network camera digital video stream transmission , and storage management , enabling the network to bring the advantages of a distributed architecture . Simply by Nvr, can watch , view , replay, managing , storing a plurality of network cameras. Get rid of the computer hardware to tie him down , no longer faced with the tedious installation of software .
NVR came not long , traditional network monitoring architecture can be divided into two types: one is a network camera + access management software , the other is a large-scale video server + management platform . The former is too simple management , operation, and safety defects ; latter cost is too high from the device point of view , does not apply to small and medium sized monitor projects that require long-term maintenance and management , highly professional operation .
So in order to change the limitations of the two control framework , based on the NVR network surveillance systems ,IP Camera with the front , so that network remote monitoring, centralized storage + integrated operations management , moderate cost , applicable to any field , especially for chain -type field level , there are more outstanding performance.
In a large demand for monitoring sites , choose a different network architectures depending on the degree of importance . Headquarters deploy monitoring and management platform , various junctions NVR + IP Camera deployed way in achieving the local management , while all NVR management platform and network to headquarters via IP network , all monitoring resources can be invoked by the unified management and management platform .
To adopt represented NVR network monitoring architecture model to address the dual needs of video surveillance and management. Video surveillance to meet the security , security management, network remote monitoring to help unify collaboration command and control center for law enforcement personnel on-site
Another big advantage of a combination of NVR and IP camera is operating , do not look to change the traditional control structures , but NVR still uses the Linux operating system , fully consistent with the DVR to operate; addition, IP network configuration on the user need not worry about the problem , and now the camera Plug and play with the VCR connected done , a network cable to transmit all signals simultaneously , for special monitoring points can even signal transmission via WiFi or 3G wireless networks.
According NVR technology classification , the current wave of embedded NVR boldly in the network . Although the field of security is trust , but it does not bring fear predecessors DVR market impact , although not yet achieved 100% network monitoring popularity , but embedded NVR rapid development of the market can be used to describe .
In practical applications , embedded NVR not need to configure the server to achieve high-definition video recording and storage capabilities, this product has the ability to forward proxy , do the front and rear end unified management control and configuration ; saves network resources , reduce storage and user operation pressure.
When the voice of the growing high-definition network surveillance , all eyes are watching here , the perfect partner NVR and IP Camera , and network monitoring to inject new blood , although this is not just come out of the product , but this reorganization created value than the 1 +1 > 2 more than people imagine , he took into account the cost of previous surveillance issues into account security issues monitoring information saved , this is not only an incentive for security practitioners hope a way forward, it is giving users high-definition network camera , the security industry is a reassurance of God , allowing users to see the superiority of the product, usability is proven to do well.
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http://www.vstarcam.com/channel/NVR-network-camera-work-together-to-achieve-a-new-leap-perfect-partner-429.html

Become competitive HD IP Camera

Become competitive HD IP Camera
From the point of view of product users , video or image clarity has become the choice to use high-definition network camera foremost concern . But users also for security reasons , once a system with analog cameras , the kind of technology has been tempered by time, mature and stable , easy to operate , will now be focusing its attention to theHD IP camera megapixels go , definitely consider the product how about performance ? when problems arise , can not solve the problem as soon as possible .
Device and method for high-definition network camera debugging worth learning . Note that when using the network camera lens choices, good or bad , or whether the quality of the lens matches largely affect the clarity of the screen , for example, 1 /3 inch CCD are usually equipped with a 1 /3 inch lens, a / 2 inch CCD are usually equipped with a 1/2 inch lens , lens debugging when the device is necessary to gather debugging a good tune , especially the back focal plane of the camera to align , often gathered lens clear picture of the cause is unclear, up less demand for high definition .
There Alarm IP Camera shield is also very important , the distal end of the shield glass gun can not use a conventional flat glass , but it is necessary to use a good optical glass , plate glass directly impair the general effect on the resolution of the picture , selection spherical enclosure should be noted that the curvature of the sphere is necessary to smooth the transition , try not to put the lens at the upper edge of the sphere , light refraction larger force here , even seriously affect the clarity of the picture . It is important , that is, regardless of what kind of housing , housing in the best light as low as possible , to cover the lens interval as short as possible , so make light pollution before the camera cuts to a minimum , is conducive to progress to enhance the picture sharpness.
To analyze the current market situation , Granville, as the dot-com HD IP Camera, has been to improve the use and functionality in a number of large and small projects, with the increase in the use case , users will increasingly recognize the high-definition monitor system bring high-definition network camera picture effects beyond imagination . The use of high -definition Alarm IP Camera network under the system allows monitoring project has become a simple and efficient.
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From:http://www.vstarcam.com/channel/Become-competitive-HD-IP-Camera-428.html

Analytical clarity of HD IP Camera

Analytical clarity of HD IP Camera
How to determine the merits of a camera ? Most users come to understand the network camera via parameter index and then make a judgment. Users rarely have the opportunity to , or able to devote the time cost to pager test for a new camera. Therefore, the understanding of a product , or start from Specifications . Network camera parameters of concern include : CCD size, horizontal resolution , minimum illumination value , SNR , shutter speed and other basic parameters, automatic white balance, automatic gain power supply, installation, communication interface hardware supporting conditions . How to make a quick judgment on product selection must first clear demand for the corresponding study focused on the demand indicators .
Minimum illumination indicator. This is an important parameter of analog cameras , but the camera parameters can be said that most of mystery index ( no one) . The illumination of the IP Camera , also known as the camera sensitivity. Factors affecting the value of the minimum illumination camera has many , including cameras with the amount of light through the lens parameters ( ie F value ) , certain functional parameters CCT parameters IRE video level amplitude level , and camera settings. First, the amount of light parameters. An aperture of F1.4 lens is twice the amount of light levels F1.2 lens, F1.0 lens F10 was 100 times the amount of light through the lens . Therefore, the use of different lenses F value , determination of minimum illumination will have a decisive impact on the value of the camera . Secondly, the light source color temperature. Color representation is a wavelength of the light source of the content index , a light source of 3200K most wavelengths between 600 nm and 900 nm, and a light source of 9300K most wavelengths between 300-500 nm, so different color temperature will revolutionize test results. On a typical CCD sensor , a 600 nm wavelength light than the wavelength of 900 nm wavelength light source produces 10 times more than electrons . That is why the special mark on the illumination color temperature measurement results of significance. Third, the IRE level . The maximum amplitude of the CCD camera video output is generally set at 100IRE ( or 700 mV ) , a 100IRE said video monitor can completely drive the best performance of a high-quality image brightness and contrast .
50IRE that only half of the video contrast , 30IRE ( or 210 mV ) represents only 30 % of the original amplitude value is generally available image 30IRE lowest performance. So there is no marked IRE minimum illumination level of the measurement results are not comparable with the actual . Finally, there is a special feature of the camera settings. Some cameras have a frame accumulation ( also called sensitivity enhancement ) function, which is to reduce the scanning speed of the way to make the CCD accumulate more electrons in the uptake of each frame , in order to highlight the picture showing a low-light environment. Open this feature allows the illumination measured value exponentially increase. If the camera 512 times sensitivity enhancement can easily reach the next level 0.0001Lux Star level , but the sacrifice is an image of continuity , a sense of animated images presented in full. In summary, a minimum illumination with meaningful indicators should note its F value , color temperature , IRE levels and whether to open the frame accumulation settings, such as 0.5Lux (F1.45600K30IRE, sensitivity enhancement OFF).
In order to better " understand" specification parameters , we need to understand the impact on product performance "mystery" under the larger parameter index . With surveillance cameras , for example, we have a brief analysis of clarity , the illumination of these two indicators focus on the higher degree of concern .
Clarity index . This is the parameter to see the product page color network camera when the first thing would be of concern. In a sense , clarity index of the camera determines its quality. The vast majority of analog products now on the market with more than 500 lines of horizontal resolution , some products are 960H program has reached a level of 700 lines. Pixel digital camera is more of it to reach the performance level of sharpness levels , such as 1.3 million pixels , 2.0 megapixel , roughly corresponding to 700TVL and 1000TVL. However, individual businesses or sweeping case vacuity also exist . If monogram horizontal resolution analog cameras 540TVL, will find little attention and there were the words "central clarity ." This is what you mean? Limited by camera comes with lens, CCD + DSP programs and other factors , some IP Camera can only location near the center of the image showing the highest resolution , but at the edge of this resolution can not be reached , the overall average resolution perhaps only 520TVL, or even lower. Therefore, the need for additional attention to be selected .
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