Advantages of ADAS Intelligent camera Image processing Sensor--samaeye
Public Time: 2018-06-08 16:45:29
With the rapid development of automobile technology, I believe that the word ADAS is no stranger to many people. In recent years with the concept of driverless hot ADAS has also become a hot word. So, how can driverless vehicles, pedestrians, obstacles and other information avoid collision in order to perceive the environment and automatically identify the vehicles, pedestrians, obstacles and other information on the road? One thing that is essential is the sensor. Sensor is a kind of device with the functions of sensing the surrounding environment and identifying obstacles. There are mainly camera, radar, ultrasonic, night vision sensor and V 2 X (that is, car and car, external information exchange. They are usually mounted on the rear bumper, side-view mirror, inside of the driver pole, or on the windshield. It is these sensors that enable the powerful skills of ADAS.
There are many kinds of sensors. This paper mainly discusses the camera sensor. ADAS intelligent camera sensor. The imaging module is composed of optical system and high dynamic special imager (color and black and white). The detection range varies according to the resolution. Engineers can respond to environmental information in complex driving environments by capturing images from the camera's horizontal angle, vertical angle of view, frame rate, and dynamic range, through a high-performance central processing unit. Provides the basic basis for image processing algorithm (depth learning) to ensure that the high accuracy, real-time, reliability of the vehicle around a variety of environmental factors (such as vehicles, lane lines, pedestrians, light sources, obstacles, Identification, classification and positioning of road signs, etc. Unlike other sensors, the advantages of camera sensors are as follows:
1. obstacle detection
The ADAS smart camera can identify vehicles, pedestrians (including bicycles, motorcycles). According to the size, speed, distance, lateral positioning, angle, etc. of the front obstacles, it provides the basis for judging and identifying the system's alarm module or related control module, and sends out reliable instructions.
2. Lane line detection
Camera sensors can clearly detect different types and colors of lane markings, and can very accurately determine the lateral position and angle of the vehicle in the driveway. This is the basis for lane departure warning and lane-keeping, which other sensors cannot achieve.
3. The light source detects
the ADAS camera sensor by measuring the position and distance of the horizontal and vertical angles of the light source, with the assistance of street lights and vehicles, it can help the anti-collision warning system to realize all kinds of early warning functions under the conditions of dawn, dusk or darkness. However, if the light is too weak, it will affect the accuracy of recognition.
4. the cost is relatively low, the application is flexible and the range is wide.
Compared with the laser radar, the millimeter wave radar and other sensors, the price camera sensor appears to be a lot friendly, so it is still one of the most popular vehicle sensors at present.
