Vehicle-mounted machine vision system based on multi-focal-length camera group and implementation method

Abstract

The invention relates to a signal processing and machine learning technology, in particular to a vehicle-mounted machine vision system based on a multi-focal-length camera group and an implementationmethod. The vehicle-mounted machine vision system comprises a monocular camera, a binocular camera, a graphic computer system, an embedded communication unit and an automobile controller module; the monocular camera adopts a telephoto lens and is used for observing a long-distance target, identifying the category and position information of the target and estimating road information of a farther place in front of the target; the binocular camera adopts two identical wide-angle lenses which are fixed in relative position and calibrated, and is used for observing a near target and determining the distance between the binocular camera and the near target. The vehicle-mounted machine vision system is low in cost and high in adaptability, and compared with a traditional vehicle-mounted machinevision system, the vehicle-mounted machine vision system has the functions of giving consideration to various far and near targets at the same time and has certain target tracking and distance measuring functions. The automation degree is high, the manual operation of a driver is not needed, and a wider effective view and better driving experience can be provided for the driver.

Description

technical field [0001] The invention belongs to the technical field of signal processing and machine learning, and in particular relates to a vehicle-mounted machine vision system and an implementation method based on a multi-focus camera group. Background technique [0002] In order to meet the needs of applications such as autonomous driving, under complex and changeable road conditions, it is often necessary to pay attention to both short-range targets, such as pedestrians and obstacles, and distant targets, such as oncoming vehicles and signal lights. Wait. [0003] The on-board machine vision system is an important part of the assisted driving system, which mainly recognizes the vehicle body and road information in front of the vehicle through the camera. The vehicle-mounted machine vision system can assist the driver to judge the road conditions, thereby helping the driver to make correct driving behaviors, reduce improper operations caused by visual reasons, make the...

AI Technical Summary

Problems solved by technology

[0004] However, most of today's vehicle-mounted machine vision systems use cameras with a single focal length. Due to the limitation of the camera lens, the telephoto camera has a long shooting distance, but the shooting angle is often small. object

A camera with a single focal length cannot simultaneously take into account the large shooting angle and the need to shoot long-distance objects. As a result, under the above-mentioned complex road conditions, the range of machine vision is limited and cannot meet the needs of applications such as assisted driving and smart headlights.

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