Vehicle-mounted cameras play an important role in realizing ADAS and autonomous driving, and automotive panoramic imaging systems composed of vehicle-mounted cameras can greatly improve the safety and convenience of driving. The panoramic imaging system can also be called 360°panoramic imaging system in Chinese, or MVCS (MulTI-ViewCameraSystem) for short. The panoramic surround view system provides car drivers with more intuitive driving assistance image information, which can quickly and accurately find situations that are difficult to observe near the vehicle, and achieve precise driving control, especially for novice drivers, which can improve driving safety and Reduce unnecessary scratches.

The panoramic surround view system covers all the fields of view around the car by setting up 4 to 8 wide-angle high-sensitivity cameras around the car. By collecting the images of the front, rear, left and right of the car at the same time, the collection components are converted into digital information and sent to the video synthesis and processing. The components are transformed into analog signal output after image processing unit distortion restoration → viewing angle conversion → image stitching → image enhancement, generating a 360-degree top view of the vehicle body, and finally displaying it on the screen of the center console, allowing the driver to clearly see whether there is surrounding the vehicle Obstacles and understand the relative position and distance of the obstacles to help the driver park the vehicle easily.

While displaying the panoramic image, it can also display a single view of either side and accurately locate the location and distance of the obstacle in line with the ruler line. ADAS assists safe driving by controlling the body camera to collect the surrounding area of the vehicle, while the panoramic camera system controls the body camera to collect the surrounding influence of the vehicle for safe parking. The two systems operate independently, throughout the driving process.

The perspective of the panoramic system will dynamically move according to the driving trajectory, providing a 360-degree picture around the vehicle. Generally, cost-effective links such as LVDS or Fast Ethernet are used to deploy 4 to 5 high dynamic range (HDR) 1 million pixel cameras. Video compression is generally used to reduce the required communication bandwidth and reduce cabling requirements (for example, unshielded twisted pair or coaxial cable can be used). Other system requirements include a multi-port LVDS or Ethernet switch, a power supply, an integrated DRAM for fast access to external memory, and embedded flash memory for reducing system costs.