Automobile cruise control method based on monocular vision and implement system thereof

A technology of cruise control and monocular vision, which is applied in control/adjustment system, target finding control, anti-collision system, etc., to achieve the effect of low cost and easy mass production

Inactive Publication Date: 2008-08-06
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The range accuracy provided by radar and lidar is sufficient for distance control, but the human vision example shows that it is possible to obtain satisfactory behavioral control using only perspective projection
Stereoscopic designs include not only the cost of additional cameras and processing power for depth calculations, but also the maintenance of system calibration

Method used

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  • Automobile cruise control method based on monocular vision and implement system thereof
  • Automobile cruise control method based on monocular vision and implement system thereof
  • Automobile cruise control method based on monocular vision and implement system thereof

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Embodiment Construction

[0032] combine figure 1 and figure 2 , the present invention is based on the monocular vision automobile cruise control method, mainly comprises steps such as image acquisition, object detection, distance estimation and braking control. First, acquire a monocular image, and perform image segmentation and car detection; when it is found that there is no other car in front, then the car should maintain or resume cruising speed, otherwise perform the distance estimation step. Distance estimation, first calculate the pixel distance between the bottom edge of the car in the image and the bottom of the image, and then further calculate the distance between the car in front and the current car. With the distance, the relative speed with the car in front can be obtained by comparing the two data before and after. Comprehensively based on the measured speed and distance, it is judged whether the distance to the vehicle in front is within a safe range. If it is within the safe range...

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Abstract

The invention discloses a vehicle cruise control method based on monocular vision and a system for realizing thereof. The methods comprises the following steps: a camera is fixedly arranged near a rearview mirror in front of a driver; a monocular image is obtained from the camera; segmentation and automobile detection is carried out for the image; if no car is in the front, a cruise speed is kept or restored and treatment of current frame image data is finished; if a car is detected in the front, distance and speed of the car are calculated; if the distance of the front car is less than the safe distance, appropriate braking is carried out through an automobile braking control system; or the treatment of the current frame image data is finished to switch to the treatment of next frame image data. The method is realized by a system which consists of the camera, an embedded calculation module, a displayer and a loudspeaker. The vehicle cruise control method has the advantages of high security, small calculation complexity, low requirement for hardware configuration, easy butch production and low cost.

Description

technical field [0001] The invention belongs to the field of active and safe driving of automobiles, in particular to a monocular vision-based automobile cruise control method and an implementation system thereof. Background technique [0002] The car cruise control system assists the driver to improve driving safety and convenience by means of sensors in the car. Automobile cruise control system belongs to longitudinal distance control, which is used to find the target (other vehicles), decide the target path position (primary target decision), measure the distance and speed relative to the primary target car, and apply appropriate braking to maintain a safe distance from the primary target , and resume cruising speed if no target is detected. At present, the existing systems for distance measurement mainly use the following sensors: millimeter wave radar, lidar and stereo imaging. These sensors provide explicit range measurements for each feature point in the scene, prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K31/04B60T7/12G05D1/12G01C11/36G01C21/00G08G1/16
Inventor 杨静宇唐振民赵春霞任明武陆建峰孙兴华
Owner NANJING UNIV OF SCI & TECH
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