Cheap HD network camera can achieve high targets ?

Cheap HD network camera can achieve high targets ?
In many people 's minds are so many words : not good goods cheaper . Where the price is not high things, so many people people born sigh. In recent years , hd ip camera universal application , its unique clear, detailed images in the visual effects allow users to have a new experience , developers in recent years with the declining cost of HD Camcorders , HD camcorder prices gradually , "the people ", but its " HD " concept is compromised ? Some cheap HD network camera can achieve high targets ? HD network camera HD Concept What are the factors ? This article will discuss with you .
What is " HD" camera , HD camcorder is the first use of the concept in the field of radio and television , most people in the field of video surveillance or follow the broadcast television standard , the " HD" is defined as 720p (1280 × 720, progressive scan ), 1080i (1920 × 1080, interlaced scan) and 1080p (1920 × 1080, progressive scan ) video image resolution above .
"HD" can not just rely on the image sensor
A IP Camera mainly by the image sensor chip , the synchronization signal generator, as an image signal processor (ISP, imagesignalprocessor) of DSP, CDS / AGC chip shot several components , network cameras also have video encoding and compression chip . Webcams in the core components of the image sensor (ImageSensor) classification do so, there are both CCD and CMOS . It is through the CMOS / CCD light sensor for progressive or interlaced scanning , the optical signal is able to capture images directly and through SoC chip processing for transmission over an IP network , enabling users to standard IP-based network infrastructure on a local or remote location achieve viewing , storage and management of high definition video data. Market, many people are affected by the sensor as a core element definition , it is not.
Currently many manufacturers in promoting their own " megapixels ", " 3,000,000 pixels " or even "500 -megapixel " cameras, in fact, " megapixels " does not refer to the camera's video resolution , it simply means that the camera image sensor photosensitive number . In evaluating a section definition network camera's image clarity , in addition to pay attention to the image sensor of the " total pixels ", the more critical it is to see whether the output image resolution up to "HD " standard , which will affect the output image clarity is not only the number of pixels of the image sensor .
Network HD cameras now on the market there are many factors that affect the price , there are many high-definition video camera to the core components of the image sensor (ImageSensor) was once considered a high-definition camcorder HD indicators affecting only factor . But megapixels image sensor if the use interlaced mode , the image quality is also lower than 720p image sharpness .
HD network camera in recent years with widespread application of high-definition camera effects , in addition to key image sensor , the camera lens and an image signal processor chip , the camera of the " HD" plays an important role to achieve synchronization signal generating also affect the circuit of the camera scanning format .
HD lens prices fall cheap camera is expected to achieve high
HD IP Camera market now there are many factors that affect the price , there are many . HD cameras are now a part of the price of the most important is probably the lens. A good shot from a great extent determines the quality of theHD IP Camera , so now more and more people will be very concerned about high-definition camera lens , a clear lens, allows us to be more clear video picture .
As if the camera 's eye lens , and HD lens is like a piercing eye of the camera clarity is assured. As enterprises increasingly HD lens research and development efforts to increase its clarity, transparency, color reproduction and other aspects of better performance. Meanwhile various lens manufacturers for security monitoring industry launched HD lens product line has more comprehensive, private security market demand and government -led Safe City and other large projects to promote high-definition camera market to grow steadily.
With one million high-definition network camera applications increases, one million high-definition camera application is also accelerating pace . HD lens burgeoned have already begun . Beginning last year , the majority of security companies HD lens shipments increased significantly. This year, the prices have come down HD camera , HD lenses became part of the security companies is another selling point. As a result, the high-definition network camera lens selection more diverse, select the appropriate lens to achieve " high definition" promising. But the price is too low to ensure the camera lens is difficult to achieve high targets.