To determine the pros and cons of the IP Camera

To determine the pros and cons of the IP Camera
We generally by the following five points to simply judge the merits of the IP Camera:
1, the intelligibility test
By ordinary video image resolution (number of lines) test card simply determine the clarity of high-definition video camera. This method can be distinguished by the naked eye directly to the sharpness of the image, general, HD 720P camcorder test card indicators can clearly distinguish more than 800TVL TV lines, and poor high-definition camera indicators to be low, and the image have jitter or flash.
2, the dynamic range test
Gradation data can be Simple Analyzing HD images through the normal video image gradation test card.
3, color reproduction
Through the color testing card or the naked eye to determine the color reproduction of the comparison HD video image. General good, the reduction of high-definition IP Camera is very high, almost up to the very realistic reproduction.
4, the signal-to-noise ratio
The case of the same picture noise suppression processing is also a measure of an important indicator of performance advantages and disadvantages of high-definition IP Camera. For the screen dark blocks light and fast processing, the noise suppression directly determines the quality of the image, there are many low-end camera can only output is more clear picture of in the more than 100Lux the ideal state, the ability to adapt to the changes in the light environment poor light or dark light environment without an effective means for noise suppression, can not guarantee the quality of the image. High-definition image in this case does not make sense, which we call pseudo-HD.
5, the image compression coding algorithm
HD IP camera for image coding and compression algorithm and poor is also a direct impact on an important indicator of camera performance, currently on the market high-definition Network Camera video image compression coding processing chip is divided into two carriers of DSP chips and ASIC chip, both strengths and weaknesses, DSP chips function application is relatively flexible, short development cycle, but the coding efficiency is low, and the cost is higher. ASIC chip features application is relatively fixed, long development cycle, but the high coding efficiency and the bulk lower cost. No matter what kind of carrier need a good video coding compression algorithm, a good algorithm to ensure image quality and clarity of the case as much as possible to reduce the video stream and storage capacity. Poor HD IP Camera often mosaic or water ripples in the case of the large amount of exercise, directly affect the quality of the video image.
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