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  • Those things about the millions high-definition lens

        "Million" and "high-definition" concept
        Social development and the implementation of the Government "Green City" plan, so increasing requirements to monitor camera the popularity and image clarity. But there are often accidents, such as the incident occurred, the video can only see the outline of the parties, and can not see the person´s facial features. This is the analog control facilities embarrassing situation. With the development of network technology, making million high definition lenses million high-definition cameras and other related equipment effectively pointed the way for the future development of the monitoring. Let million high-definition monitor concept discussed.
        Why You Should Choose million high-definition camera
        The biggest difference is that million high-definition cameras and analog cameras to playback screenshot picture quality is greatly improved. Traditional analog cameras originally resolution is not high, to be combined by the repeated A / D conversion, the electromagnetic transmission interference, the synthesis of D1 screen deinterlacing video damage, the actual arrival of the sight of the effect has been greatly reduced, so either D1 or 4CIF etc. only the theoretical values, in the practical application clarity up to a level of less than the theoretical values; Secondly, the traditional analog color camera acquisition vertical resolution PAL standard under 625 lines to 575 lines after blanking, up to about 540 lines the current limit, transfer to the back-end equipment DVR, the highest within the DVR capture chip can only deal with the resolution of 768 × 576 pixel image, about 400,000 pixel the playback screen up only about 40 million pixels, the case occurred is difficult to recognize the face through the screen.
        Millions of high-definition camera is used in digital signal transmission, it the optical signal is converted into a digital signal, and then to perform image compression and processing by the DSP and outputs the compressed video, and finally through the network, and in the resistance to electromagnetic interference, progressive scan With traditional analog cameras can not match advantage. There are obvious advantages especially screen resolution, digital the lowest HD cameras up to more than 800 lines. You can also reach 3,000,000, 5,000,000 pixels or even ten million pixels, pixels and clarity, performance is quite different between analog and digital.
        Million-pixel high-definition camera has so many advantages, reasonably long overdue popularity, but early expensive HD cameras. With the localization of the high-definition camera, its price dropped significantly, the development of domestic high-definition cameras to today, the price has become increasingly approaching the traditional analog cameras. According to the survey in 2010 a total of about 50 million units, the network camera market is expected to reach 800,000 units in 2011. The megapixel IP camera growth has played a determining factor. Will become the mainstream of future high-definition camera, which will further drive the development of related digital security products. With the increasing development of the Internet age, clear images obtained by a high-definition camera with intelligent identification technology, automatic tracking technology application will provide a reliable guarantee for people´s lives and production, high-definition camera localization will bring high-definition monitor popularity.
        "Million" and "high-definition" concept
        Moving in the HD era, as one of the most critical components of the monitoring equipment lens, HD awareness and standards is quite a mixed bag, the fragmented nature of the case. I believe that the status quo for the CCTV lens industry an urgent need to launch a unified HD standard CCTV lens.
        Megapixels lens and HD lens "is not the same concept? The literal meaning is "megapixels", the resolving power of over 1 million pixels lens, then 1 million pixels, 1.3-megapixel, 300 million, 500 million or even 10 million pixels, they are megapixels, but they are "HD" mean? Currently on the market a lot of products hold high the "megapixels" under the banner of publicity, can easily bring the concept to consumers dislocation. Obviously, this is to confuse the positioning of a 1.3 million-pixel and 300 million pixels on the imaging results are essentially different, the effect of 300 million pixels to be expressive in terms of image sharpness, gradation and details much higher than the 1.3 megapixel for lens manufacturing process above 1.3 megapixel lens technology is easier to achieve, 3 megapixel camera, screen high pixel, various optical indicators without loss in order to achieve a more brilliant picture performance effect in the production process, 300 million pixel lens technology requirements are higher, the cost is also more expensive.
        In fact, the "HD" has been the freshest topic in the industry, is also the most controversial. "HD" is a complete technical concept, and should include image acquisition, conversion and compression, transmission, storage, control, display a complete image processing workflow.
        The currently accepted definition for "high-definition display" system, the U.S. Advanced Television Systems Committee (ATSC), the definition of high-definition television for the following three: 720P (1280 x 720 progressive scan) 1080i (1920 x 1080 interlaced) , 1080P (1920 × 1080 progressive scan). 720P as a transitional indicator, launched mature products rarely, in fact, has gradually be included in the category of "SD". 1080P truly become all HD equipment manufacturers efforts to the promotion and popularization of a standard.
        Why assembled HD Lens
        With the development of technology, the high-definition camera has gradually become the mainstream of the market, and these cameras have the unified the pixels standards and parameters. In the current security monitoring market into the digital age, As mentioned previously, the mainstream CCTV lens is more loosely "megapixels" publicity, it is wrong, consumers always want a clear understanding of the lens of their choice in the end how high resolving power, the same as the difference between the clear understanding of the 1.3-megapixel camera with 300 million pixels camera. Clear about the concept of the lens market, causing consumers to select megapixels camera, but I do not know how to select the appropriate lens. Therefore, the major CCTV camera manufacturers need to quickly on HD CCTV lens set a clear, unified indicators. To learn from the imaging device and display device definition of HD is gratifying to see that has been given "full frame lens resolving power of not less than 2 million pixels real HD CCTV lens standard lens manufacturers. I hope in the near future, you can hear more lens manufacturers to make their own HD lens standard, to form a set of the lens industry recognized the HD standard to regulate lens market, and promote the development of CCTV HD lens.
        What lens is HD Lens
        HD cameras, known as megapixels ordinary lens with millions of high-definition lens, with 3,000,000 HD lens, same camera case, the final performance of the screen, the resolution of the lens can be used with starting a decisive role.
        Based on some of the products published technical indicators, the general megapixels lens, the central part of the resolving power of only 100 million pixels, the surrounding decay to only 50 to 60 million pixels. Currently, the market mainstream "megapixels HD" lens, announced the technical indicators are usually field a high of 70% for the radius of the imaging circle, the resolving power of 300 million pixels, the part outside the field of high 70% of the imaging circle can achieve the resolving power more than 1 million pixels.
        Now on the market, only a handful of "HD" lens products can do: the presence of high 80% for the imaging circle of radius resolving power of up to 3 million pixels, the same time the field 80% of the part of the imaging circle around Resolving power remains more than 2 million pixels. Thus not difficult to see: more and more confused with the concept of the lens defined because there is a huge price difference between HD lens and lens on the market, so that consumers smoke and mirrors. But behind these "beautiful" veil thrown off, the high cost is not necessarily the quality.
        Today, with the development and maturation of the technology of high-definition cameras, high-definition monitors, network transmission, CCTV security market is entering the HD era. So technical upgrading of the wave, the lens should not become an obstacle to the development of CCTV market HD, so clearly unified the HD lenses indicators become imperative nowadays!