At present, the domestic intelligent video analysis is no unified concept of what behavior detection is the list of intelligent video analysis, different opinions. Moreover, since the use of the environment, and use for different purposes, different behavior of the automatic detection, video analysis products will face the choice of some minor differences. St Viagra surveillance camera manufacturers are not intended to explore the intelligent video analysis products, which one is better, but from the perspective of purchasing products listed need to pay attention to the user to choose to buy some places for discussion.
Light adaptation: most of the monitoring system are not only at a fixed time before using, in most cases 24 hours in a working state. Monitoring system for long working hours, changes in environmental light – for outdoor
security network camera systems, confront rain, snow fog day and night, a huge outdoor light conditions change, and also includes a light reflectors, backlighting, shadows and other factors. As for indoor than outdoor is much simpler, but there are light light and dark, the lights turn off the lights, shadows, and staff to move around factors such as light conditions change.
Video surveillance
ip camera is generally impossible to work under specific lighting conditions, video analysis products is to improve the core algorithm video analysis capabilities to better monitor performance under a variety of light environmental conditions become the major intelligent video analytics vendors One of the requirements. Therefore, the video analysis technology, ability to adapt to light has also become an extremely important factor to consider when the user to select intelligent video analysis products.
Stability: As mentioned above, most of the monitoring system are required to achieve the 7 * 24 hours continuous and stable operation for a long time, the average uptime generally require at least one million hours. In this request, intelligent video analysis products are higher system stability is a need to focus on the factors. Crashes every few days, an error, stability too bad for the user, such products probably do not have any practicality, and naturally can not win the market. Therefore, stability should be the users concerned about one of the factors. At present, the embedded structure of intelligent video analysis products for the computer software version of the product has certain advantages, its greatest feature is the high stability.
Anti-jitter: install the hd ip camera can not be absolutely still, in some applications, such as the transportation industry, there are a lot of factors can cause the slight shaking of the camera (such as next to a car, or strong wind blowing, etc.) This camera jitter in the video that is the vision of continuous jitter, video analysis techniques from the video to the target location and tracking, anti-jitter performance too bad, is always lost on the target track, resulting in extraction not target trajectory or extraction error, then this product are basically no practical value.
Anti-Blur: know that for a little understanding of monitoring technology, the camera focal length is the drift phenomenon exists, that is a long time without moving the best ip camera ,its focal length often have a certain bias, no longer maintain the original focal length value, the focal length direct consequences of the deviation of the fuzzy video images.
