The development of automatic tracking technology brings new directions to security monitoring

Since the development of fastball, various technologies and functions have been quite mature. However, the homogenization of products is still facing a serious situation. The prospects for the development of fastball are plaguing the development and production of dome cameras. Many manufacturers have made automatic tracking technology an important part of their innovations, driven by the trend of intelligence. However, due to the constraints of technology and cost, intelligent functions cannot be applied to a wide range of applications. How to develop smart roads will be a major concern for people in the industry.

The fast ball intelligent function is the most representative front-end monitoring device. The remote control, zoom, high-definition image, preset position cruising, automatic tracking and other functions of the fastball are available in Pingan City, transportation, stadiums, ports and other projects/industries. More and more played an important role. However, with the continuous emergence of terrorist activities, coupled with the progress of the digital and networked development of the entire monitoring industry, the intelligent functions of fastball have been put on the agenda. Under this trend of development, automatic tracking has become one of the intelligent technologies that have made rapid development in recent years.

Front-end intelligent function The current dome has some preliminary intelligent functions, such as detecting the temperature and humidity inside the dome, automatically starting the internal heating and cooling device, intelligently monitoring the rotation state of the fan, intelligent identification system public-academic and other functions, but these intelligent functions It is only for the intelligent detection of the internal work environment of the dome camera and the performance of the dome camera. It is not the intelligent detection and analysis of the monitored objects of the outside world. However, it needs to intelligently detect the monitoring target at the front dome camera, and it needs to integrate intelligent modules such as the IVS. (software) come together. Although the current intelligence has not formed a general application demand, it can be expected that it will play an unmatched role for traditional products in many applications, and it will also become one of the mainstream trends in fastball technology in the future. . The intelligent functions of the fastball are mainly divided into two types: the front-end dome camera is independently completed and the back-end software platform is used together with the front-end camera operation. The back-end intelligence analyzes the video through background software algorithms and then issues a drive command to the fastball. The intelligent function of the fastball can be achieved independently at the front end by two methods. One is to embed the algorithm of the smart module into the DSP chip of the dome camera, and the other is to increase the smart module and the smart function of the module. The input to the dome control is completed.

Automatic tracking technology automatic tracking is based on the intelligent identification, differential calculation of the image, automatic recognition of the direction of the target movement in the visual range, and automatically control the PTZ to track the moving target, at the same time with the high-definition automatic zoom lens, When the target enters the sight of the smart dome camera until it leaves, all videos are clearly transmitted to the monitoring center. Once an alarm occurs in a certain area of ​​the system, the related fastball will automatically rotate to the alarm point to start tracking, and it can be set to start the video or capture and start the surrounding lights, alarm bells and other linkage functions.

For the dome camera, the mobile tracking function does not need to be controlled by the back-end software platform, as long as the front-end can automatically complete the tracking task. When the target object enters the visual range of the dome camera, the dome camera can automatically recognize the direction of the target motion, and automatically control the rotation of the cloud platform to track the moving object so that the object is located in the cage-face center and the target can be automatically enlarged. Automatic tracking continues until the target has left the visual range of the dome camera, and the dome camera returns to the original observation point for the next trace.

The automatic tracking of the fastball is a test of the mechanicality of the ball machine. The tracking of the target object depends on its speed and accuracy. In operation, it adopts the characteristics of center positioning and local zoom to satisfy the clarity of the monitoring image.

Automatic tracking classification The current fast ball automatic tracking mainly has two ways: automatic tracking and locking precise tracking.

Area tracking mainly means that if an object enters the set area of ​​the dome camera, its motion trajectory is tracked. After the sphere is out of range, the dome camera automatically returns to the clinic-observation point for a new round of tracking. The area tracking function is mainly applied to the environment where the monitoring object or the moving object is small. If a moving person or object enters the monitoring range of the camera, the camera will automatically track it, but cannot lock the specific person or the target. Once there are multiple objects moving at the same time in the surveillance area, the dome will lose the target object.

Lock tracking, that is, after the user specifies the target, the ball automatically tracks the trajectory of the object. Lock-tracking technology is implemented by template matching algorithm. It can also have good monitoring effect in areas such as squares with large areas of high traffic. After manually locking the tracked target, even if other moving objects are monitoring Within the area will not be with the loss - first locked target.

Lock tracking can be set to manual lock and automatic lock. Manually lock the track by tracking the target cage on the screen with the mouse - a box that locks the track on the target. Regardless of whether the target is moving or stationary, other moving objects are automatically tracked, and the tracking is fast and smooth. Even if multiple moving objects appear on the screen, the dome will not track it. This feature is suitable for security monitoring in a complex environment. For example, catch a thief. If a thief is found on the surface of the surveillance cage, as long as the thief image cage is locked manually, the dome will only track the thieves, and it will not track the victim of the plagiarism. Knowing where the thief is, he is trying to secure a favorable opportunity for arrest.

The mobile automatic lock tracking automatically tracks the first moving target, that is, whoever moves first. If the first moving target stops and the second target moves, the second moving target is automatically tracked, and the tracking is fast and smooth. This function is suitable for unattended occasions, such as vaults, arsenals, power stations and other important places.

The development prospects of intelligent fastball At present, technology applications such as intelligent identification and tracking of fastball are still in an emerging stage. The function is not yet fully matured, and it is easy to lose the target when it is complicated or the target moves too fast. However, it is undeniable that these advanced technologies have brought new horizons to the security monitoring industry, with the improvement of product reliability and the development of more new technologies, such as: the judgment of the behavior of the target, traffic statistics, face recognition, etc. The intelligent application of the monitoring system will be more extensive.