Megapixel IP camera to buy ten key elements of concern

Megapixel IP camera to buy ten key elements of concern

1: Image quality
Clearly, the image quality any one of the camera's key performance indicators, especially in relationship to the importance of life and property security applications, image quality is more significant. If the camera is unable to provide the high-quality video screen, then explore other factors and features will become meaningless. Ultra-clear image quality allows the user to more accurate tracking details and changes in the screen and be able to make faster and better decisions, which can provide more effective protection for personnel and property. For automatic image analysis and alarm tools (such as the camera's built-in motion detection and other intelligent functions, etc.), the ultra-clear image quality can greatly improve the accuracy of their analysis and alarm.
In assessing a network camera's image quality, must take into account the following issues:
The sharpness of the image can be divided into how many levels? It has high quality lens? When a lot of movement in the screen image quality? Product data sheet may contain the problem part of the answer, but must personally camera field test to ensure that the characteristics of the products described in the data sheet can really meet your application needs.

2: Product Line
IP Camera have a lot more features than analog cameras, such as built-in image compression, motion detection, network connection and transmission, event and alarm management. In the system need to be extended, you usually want the extended system with the same or even more features, in order to achieve this goal, the best way is to select a small number of suppliers and maintain long-term cooperation. In selecting suppliers, should select those product lines than all the manufacturers, their product line should contain at least the fixed camera, fixed dome camera and PTZ cameras full range of products. In this case, one or two suppliers can fully meet your current and future application needs, you can easily upgrade to megapixel resolution. Ability to add wireless transmission system or audio support. If your existing system with analog cameras, and need to be integrated into the digital system, select the product line also includes a video server (encoder) video decoder, a protective cover, and other related accessories manufacturers.
3: integration and back-end application software support
And you are considering the purchase of HD IP Camera is located in a closed system, so your choice for the back-end application software, or even only one set of video management software to choose? You know, the security industry is not only closer to the network camera, more importantly, it is transformed to the open systems and hardware platforms. Therefore, the network camera manufacturer produces excellent must be in line with industry standards, with an open programmable interface (API), has a strong integration and can definitely provide a broad space for your back-end software selection, some of the leading enterprises and even on a global scale with hundreds of partners, can provide users with hundreds of back-end management software to choose from. From a long-term perspective, open, multi-vendor system will always be in the market dominated by.
4: image compression format
MJPEG and MPEG-4 network video surveillance in two common image compression format, both have their own advantages in image quality and bandwidth occupancy, so the network camera should be able to support two compression format, so that the user can Depending on the application environment to select the appropriate format in order to optimize image quality and bandwidth resources. More importantly, the excellent network camera should be 100% in accordance with the MJPEG and MPEG-4 international standard image compression. When you find those who claim to own the product conforms to a standard does not actually 100% compliance with the standard, there will inevitably be surprised, after all, 99% of the matches actually mean do not meet. In full compliance with international standards to ensure that you can use video streaming from different application systems, also can guarantee you, after 10 years still be able to watch the recorded image now. Conversely, if a video camera is a proprietary compression technology, once the company out of the market, the interests of the end-user must have been losses. In addition, if a company claims that their products support MPEG-4 compression format, must pay attention to the use of license fees (LicenseFee). MPEG-4 is a charge is made for this technology, you need to figure out how many users permission to use the product in the end. If the manufacturer of the product does not have its MPEG-4 technology related expenses, then it is quite likely the compression format is not in full compliance with the MPEG-4 standard, or after purchasing the product, you need to pay license fees.
5: device configuration and management tools
Like other intelligent network equipment, millions of HD Network Camera has its own IP address and built-in firmware (Firm-ware), many manufacturers will provide a free upgrade. Before you sure you want to buy a network camera, must be considered to configure the IP address for a large number of cameras, as well as upgrade and maintenance cost consumption. IP Camera manufacturer shall provide users with an easy-to-use tools to effectively support equipment maintenance process for the upgrade and maintenance of overhead equipment downtime should have a clear estimate. Equipment maintenance tools should also be able to automatically lock all network video equipment in the network, and can monitor the working status of these, in order to monitor and maintain the equipment.
6: network performance and security features
In addition to image quality, HD IP Camera network performance is a very important features. Has its own IP address, you can directly access to the Ethernet, these are only some of the most basic functions of the network camera, have a market for all network cameras. However, in order to select a good network camera, you also need to consider other factors, such as: it supports DHCP (Dynamic Host Configuration Protocol)? To know that many companies will use this agreement to maintain the internal IP address. It supports data encryption transmission? For example, the most commonly used HTTPS protocol? In addition, the company's IT department for the attitude of the product is also a very effective touchstone, whether they are willing to deploy this network camera to the corporate network? Most of the IT department is an expert in network technology, they know the IP Camera whether they have sufficient network and security features.
7: an image sensor
The image sensor is one of the most important member of one camera view from the scan mode, and is currently exist on the market both interlaced and progressive scan image sensor. In fact, the only network cameras in order to achieve the progressive scan function, but not all of the millions of HD IP Cameras have this feature. The progressive scanning means at the same time for exposure and capture of a complete image, interlaced analog cameras once only scan Banfu image, after 17 ms, then scan Further demi. If the objects in movement, analog cameras due to the use of the technology is interlaced, they acquired image typically appears obvious smear phenomenon such as blinking and fuzzy screen, while the progressive scan picture does not appear similar phenomenon. Clear image of the moving object in video surveillance applications, which is critical, it allows the user to be able to see the details of the characteristics of the moving object, such as facial features of a fleeing perpetrators. Please recall that, when you press the "pause" in the process of watching a DVD, why the screen than using a VCR seems much clearer? That is the result of progressive scan.
8: Power over Ethernet (PoE)
PoE function seem just an ordinary webcam features list option, but please carefully consider: Would you like to save $ 300 on each camera cost? $ 300 about power wiring and power supply for a video camera takes, even if it is only small and medium-sized system contains 50 to 100 cameras, for their supply of investment required is not a small sum of expenditure, and the need for a in terms of the end user to install hundreds of cameras, which means more considerable sum of funds. And support PoE Megapixel IP camera, these costs can be saved and used elsewhere. Note that the choice of PoE-capable camera, make sure they comply with the IEEE802.3af standard. For you to be able to free selection from many well-known network equipment vendors (such as Cisco, Nortel, Netgear, etc.) to support PoE network switching equipment. In addition, PoE function can make your video surveillance system, including cameras, work from a network server room with power, and the use of a UPS (uninterruptible power supply), so even in case of power failure monitoring system can still Working.

9: Distributed Intelligence
In North America and some other developed regions in the world, "intelligent video" has become a very popular term. In the next few years, intelligent video technology will get the great development and improvement, but only when the smart factors were deployed in front of HD IP Camera which, intelligent video system really be able to do scalable. The reason is clear: intelligent video processing requires hardware device has a very powerful data processing capabilities, video processing is not which resides in the camera, just a few cameras enough to make the PC server overload. When the Intelligent factors resides in the and a Class edge of the camcorder device, the camera itself can be carried out on the video data pre-processing, and decide when to send data to the backend device. A Network Camera should be able to work just like an intelligent caretaker, and allows the user to be deployed to the system can use intelligent video network camera. By definition, only those with the video data processing capabilities, and with motion detection (VMD), I / O alarm port and event management and other advanced features of the network camera to be able to call it intelligent network cameras.
10: Manufacturer background
As discussed above, the choice of network cameras, must be based on the projected increase in the number of systems in HD IP Camera, as well as the demand for new features of the network camera to make a decision, which means that you choose the webcam manufacturer The supplier will be a long-term partner. Visible, choose a reliable network camera manufacturers are also very important. So, should choose what kind of manufacturer? You need to consider a number of factors: the manufacturer has sold and installed a number of network cameras and other network products? The manufacturer's profitability? The manufacturer is focused on network camera technology, or that the network camera is only a small part of its product line? The local agent or representative of the manufacturer, can provide you with comprehensive technical and after-sales support? Whether the manufacturer is a global enterprise, can easily cope with the linguistic differences? Whether the manufacturer has sufficient industry success stories for your reference? Please be sure to buy from the market leader in IP Cameras, thus ensuring long-term access to innovative features, full support, continued to upgrade as well as before and after reunification, highly compatible product line, must not be sacrificed in order to save the expense of a very small sum and reliable long-term sex.
Epilogue
Video surveillance future belongs to the era of high-definition network million sincerely hope to read this article can be discussed and I look forward to your advice and valuable suggestions, select what Long Wei create, select the quality of platinum, diamonds service! Let us create a better HD Horizons.
From:http://www.vstarcam.com/channel/Megapixel-IP-camera-to-buy-ten-key-elements-of-concern-115.html