Future Network Camera Prototype Exploration
Many people frustrate with cameras they've been exposed to, perhaps most annoyed that they can not look straight into someone while you're video chatting. And as things like somatosensory games change the way we interact with computers, the cameras installed on your monitor or on your cellphone seem to be clearly something of the 20th century. This new sensor is still a developing study, but it represents the shape of the future webcams. It is in its early stages of development and they have not yet been named.
This transparent film can intercept a small amount of light passing through it and is directed towards the edge of the sheet. Where a large number of photoelectric sensors to obtain light, but also through some complex mathematical calculation of the brightness of the light hit different sensors, they can reconstruct the image on the entire sheet. Of course, this image must focus on the display itself, which means the image must be centered on a film or a conventional image sensor.
Because you can not place a huge camera in front of the monitor (or project a picture directly onto the film like their test rig), this new sensor might get a rather vague image of the object in front of it. But you do not always need a clear picture, for example, you can detect gestures, or ordinary background lighting and the user's location. And it does not have to be installed on the screen, it can be simply placed on the window, the table, so that they become a photosensitive surface. The current resolution is quite limited, it can only produce gray-scale images, but also a lot of noise. But this is only a proof of concept, improve image quality will be the next research direction.
Webcam five characteristics analysis
The project of safe city construction led by government agencies and public security organs is one area where the network products are relatively fast and the number of products used is also relatively large. Network monitoring is the first choice of most projects. In the near future, Most projects on the safe city project use network cameras. The use of standard definition and high-definition network cameras combined with the integration of network coverage without blind spots monitoring project. In the development of network cameras, highlights the following features:
1, high-definition into the most basic requirements
In the era of analogue monitoring, the user's blurry, snow-covered frames were long overwhelmed and overwhelmed by the fact that the best camcorders on the market were only capable of D1, and the maximum number of pixels in theory was only about 400,000. As the largest security camera security assistant, analog surveillance products can no longer meet the needs of users, so "HD" has become the first demand, and, with high definition image quality, low illumination, wide dynamic, intelligent, etc. Such as higher levels of demand can be achieved, it has application value.
High-definition images rely mainly on technological breakthroughs, starting with improving the quality of video sources. Digital network camera relative to the analog camera, using progressive scan, commonly used CCD image sensor using AD conversion, optical signal into the digital signal output, to avoid repeated AD conversion, image quality damage is small, but also in color reproduction, signal resistance Outstanding performance in interference.
2, low light speed to accelerate the popularity of applications
As security monitoring is increasingly becoming more and more popular in high-end and dedicated fields, camera applications are also becoming more and more widespread. Many monitoring conditions are poor and dimly lit locations require the installation of versatile cameras, especially low-light cameras. In addition, in order to meet the 24-hour monitoring needs, new technology-based low-light camera has become the new darling of the monitoring market. At present, low-light cameras have been widely used in finance, Wen Bo, hotels, office buildings, residential property management and other fields.
Now, low-light high-definition network cameras have emerged, this camera uses a number of brightness enhancement technology, in harsh surveillance environment, low-light effects far exceed the analog camera, they also have an outstanding advantage, that ordinary cameras in the low Under the illumination conditions, the color picture faded into a black and white image, and this product still presents a color image in low light, whether static or dynamic picture, can show a strong sense of hierarchy, color reproduction is true, less noise, No trailing phenomenon and so on. Industry experts believe that the improvement of low-light performance will speed up the popularity of high-definition network cameras to speed up the process of monitoring HD era.
3, intelligent become the main trend
Intelligent monitoring identifies behaviors and types from complex data analysis and provides operational commands, data and information for smart behavior such as alerting, alerting, and intelligent retrieval. If traditional video surveillance is a way to search for suspects afterwards, then intelligent monitoring is an aid to stop the crime, thus greatly improving the efficiency of monitoring. And, because smart devices can selectively transmit video, which effectively saves bandwidth and dramatically increases available network bandwidth. Today, intelligent monitoring has become an important topic for monitoring the development of technology and market needs.
4, ISP (ImageSignalProcessing) is encoded chip integration
By integrating ISP, not only can significantly reduce system costs, but also greatly enhance the stability of the video, optimize the optical image performance. This is to enhance the imaging quality of HD network cameras has an important role. Currently there are an endless stream of high-definition IP solutions on the market, including HiSilicon, TI, NXP, Trident, Techwell, Chi source and many other chip manufacturers have put forward their own unique HD IP solution.
5, standardization
Whether it is ONVIF or PSIA, are voluntary organizations formed the standard, but get more and more enterprises in response, or has a very important significance. In the next few years, standardization will become a passport for HD network cameras to the market.
About webcams
Network Camera (8 photos) Network Camera Also known as IPCAMERA (referred to as IPC) by the network coding module and analog camera combination. Network coding module will analog camera collected analog video signal coding and compression into digital signals, which can directly access the network switching and routing equipment. Network camera built-in an embedded chip, using embedded real-time operating system. IP Camera is a new generation of products combining traditional video camera with online video technology. The video signal sent by the camera digitized by the efficient compression chip compression, sent to the Web server via the network bus.
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