With the continuous
development of security monitoring technology, market demand for
security monitoring also quickly changed intelligent video surveillance system for home security, anti-terrorism and security needs, user
requirements are increasingly urgent, and therefore in recent years,
smart of high-definition video surveillance system has become a clear
development direction, which means that the requirements of the users of
the monitoring system will be more focused on the surveillance camera image clarity, attention to the monitor screen in the extent to which
the site consistent intelligent analysis system enabling it to be used
to accurately identify abnormal target.
Traditional analog cameras
can not meet the demand for high-definition image capture, HD has
become the mainstream of the development of today's video surveillance,
to achieve high-definition video surveillance, can not be separated from
the high-definition camera, therefore, megapixel ip camera products have emerged. Megapixels HD ip camera appear laid the
foundation for for HD monitoring program realization megapixel ip camera
is based on IP network transmission of high-definition camera.
Constitute an example to introduce a general definition network cameras,
front to back turn lens, infrared cut filter, the image sensor, clock
synchronization motherboard, power supply, and I / O network interface
board compression and image processing encoding. In all the constituent
parts, the most critical is the image sensor, the indicators or a direct
impact to the excellent high-definition network camera picture effect.
Currently on the market, most of the high-definition network cameras
using CMOS as the photosensitive element CCD sensor, HD ip camera advantages.
Megapixels ip camera just a general term of high-definition network camera industry, refers
million and more than one megapixel ip camera, but the industry has not
yet formed a standard to define megapixels and HD. Megapixels is the
effective number of pixels of the sensor used in network camera reaches
more than one million, at the same time, this scene HD camcorder output
screen resolution of at least 1280 × 720. The image resolution of
today's mainstream 1.3-megapixel, 2.0 megapixel, 500 or higher megapixel
megapixels grade network camera output are generally at least 720P
(1280 × 720) or 1080P (1920 x 1080). From the current industry
recognized standards, the video screen resolution of 720P HD is a basic
requirement, and even on some occasions called quasi-HD, because the
strict sense, the 1280 x 720 resolution has not yet reached a hundred
million pixels. And is generally recognized as the true high-definition
images, video screen resolution needed to reach 1920 × 1080, that
commonly referred 1080P.
Is easy to see from the above-mentioned
video screen resolution megapixels HD ip camera video screen is the era
of traditional analog cameras can not match the clarity improvement,
enlargement of the image field of view, are the most prominent
advantages. On the one hand, from the resolution numerical comparison,
the screen resolution megapixels HD ip camera many times greater than
the advantage of the traditional camera clarity; practical application
in addition to the level of clarity of the video screen, there is a very
important requirements that the real-time nature of the video screen to
view the PAL transmission and playback frame rate of up to 25 frames /
sec. Transmission and presentation of high frame rate currently the most
megapixel ip camera on the market in 720P or 1080P resolution format
can achieve 25 frames / sec, and reached the 2560 × 1920 resolution HD ip cameras are mostly not achieve such the clarity under real-time rendering.
Practical application in the industry, customers tend to have very
specific monitoring requirements, as well as to achieve the objectives
and requirements. Such as bank teller monitoring system needs to be able
to clearly see the facial features of every coming for business
personnel; traffic road monitoring need to be able to clearly see the
license plate number of the vehicle by each lane. Traditional
non-high-definition monitor, in order to meet these special needs often
require for each teller, each individual lane cameras installed to
narrow the monitoring vision and clarity to ensure that monitoring
goals. Megapixels HD ip camera application, you can use
the one megapixel ip camera instead of multiple non-high-definition
camera, and can reach the need to use multiple traditional cameras in
order to achieve the monitoring results. Three-lane road monitoring
format cameras use SD D1 resolution monitor For a clear license plate
information, you need to be installed separately for each lane cameras
require a total of three cameras to the lanes completely monitoring.
Megapixels HD ip camera, you can achieve a camera monitoring of the
three-lane, and get a clear license plate information.
Megapixels HD ip camera,
there is no doubt to the majority of users has brought great
convenience, but also makes security monitoring quality has been greatly
improved to accelerate the exit of existing markets, while also
continue to promote traditional analog cameras. So if you want to select
in the practical application of the higher pixel camera monitoring the
effect of the greater good? In fact, megapixels HD of course bring to
enhance the quality of the screen, but at the same time should also see
that the increase in network bandwidth usage, as well as the upgrading
of the storage space requirements, such as 1080P HD screen, five times
the clarity screen in SD D1, D1 resolution transmission only 1M
bandwidth is needed to transmission and storage, to 1080P HD
transmission bit rate up to 6M transmission and storage. Million-pixel
high-definition camera for HD monitoring program construction,
considering the input of the transmission and storage, choose the most
suitable high-definition camera, rather than blindly select five
megapixels, even million pixels; Perhaps 1.3 million, 2-megapixel ip
camera is the most suitable choice. Megapixels HD ip camera, you must
also choose the right camera lens, you first need to choose to use HD
lens, if you are still using ordinary non-HD lens, you will not be able
to exhibit ultra-high resolution megapixel HD ip camera effect. In
addition, according to the application environment and to monitor the
objectives and requirements of the different, but also to choose the
right focal length of the lens, is to choose to meet the monitoring lens
vision objectives and requirements. If you choose a wide-angle lens,
the viewing angle is large, generally more than 90 degrees, suitable for
monitoring large-scale, short-range establishments; select a telephoto
lens, the viewing angle less than 20 degrees, is mainly used for a wide
range of ultra-long-range environmental monitoring, such as a forest,
stadium, harbor and other high-altitude look monitored.
Million-pixel high-definition camera on the market lack of people with
all kinds of different characteristics of the models, rather than the
integration of intelligent video analysis technology, with a
high-definition camera with features to become one of the highlights of
the development of the HD camcorder, such as smart HD network cameras,
intelligent video analysis technology megapixels HD organic fusion.
Intelligent video analysis technology has become the mainstream of
today's technology development direction, continue to be widely used,
megapixels brings high-definition picture quality, video surveillance
into the era of high-definition monitor, but did not change the
traditional passive monitoring mode . Unfocused observed scene images of
high-definition display, of course, to the monitoring personnel brought
the intuitive experience of HD, but still could not change the number
of monitoring site, easy to miss the passive situation. And then clear
the screen, if police intelligence can not be the first time to the
monitoring personnel receive the alerts, the effective value will be
greatly reduced. Use of early warning efficacy of intelligent video
analysis, the first time there will be a the police intelligence HD
screen pop-up will greatly enhance the efficiency of its monitoring. In
the era of traditional analog surveillance cameras, the camera itself
does not have the video processing DSP chip, it can not be intelligent
video analysis algorithm is embedded to the camera in order to achieve
the intelligent monitoring need of additional intelligent video analysis
equipment, the cost and maintenance effort are larger. Megapixels HD ip
camera emergence of video processing DSP chips that motherboard, so you
can achieve the intelligent video analysis algorithms embedded
megapixels HD ip camera. Intelligent video analysis algorithms will be
occupied by the processing power of the DSP, the order does not affect
the video compression to ensure the quality of the video screen, as well
as in order to ensure that the intelligent video analysis algorithms
have sufficient computing resources to achieve higher performance, dual
DSP chip manufacturers to adopt way, on the one hand, to ensure that
millions of high-definition picture quality, on the other hand to ensure
that the performance of the intelligent video analysis.
Laid the foundation for the realization of intelligent video analysis capabilities megapixels network cameras.
As we all know, intelligent video analysis is based on image analysis
of events, the premise is the image, the image is clear or not directly
determine the accuracy of the analysis of the events. Megapixels
emergence of intelligent analysis to provide a high-definition image
sources, intelligent video analysis accuracy also increased
dramatically, has been a manufacturer of intelligent video analysis
accuracy to the size of 3 × 3 pixels, If you do not have a
high-definition The video source do to ensure, this precision is
difficult to achieve. Megapixels HD ip camera appears, not only for our
naked monitoring provides a high-definition image analysis to provide a
high-resolution analysis of the source, as well as equipment
intelligent, easy monitoring intelligent. As mentioned earlier
megapixels HD ip camera applications that require high bandwidth to
carry high-definition image transmission, all HD image transmission to
the monitoring center for check-in staff monitoring, and will no doubt
take up a lot of network bandwidth resources, The integration of
high-definition video camera with smart technology, making the front end
of the camera can be automatically filtered high-risk events, warning
image filtered the chosen transmission of monitoring center, so that
will greatly reduce the HD monitoring solutions rely on network
bandwidth resources, dramatically reducing HD solutions of the overall
cost.