Vehicle steering judgment method and system based on image ambiguity comparison

Abstract

The invention provides a vehicle steering judgment method based on image ambiguity comparison. The method includes the steps of collecting driving images of a vehicle at all moments in real time through a camera shooting device, receiving the driving images and dividing the driving images into a plurality of sub-images, extracting the sub-images sensitive to gray level and color gradation changes to form ROI areas, symmetrically dividing each ROI area into a left area and a right area, calculating the image ambiguity degree of each area, counting the difference values between the image ambiguity degrees of the left areas and the right areas of the ROI areas composed of 300 or more driving images corresponding to different speeds, calculating mean values and variances of all the difference values at the corresponding speeds, and judging whether the vehicle is in the turning state or not and judging the steering direction of the vehicle according to the difference value between the image ambiguity degrees of the left area and the right area of the corresponding ROI area at the current speed of the vehicle. The method is small in calculation amount, the turning state of the vehicle can be rapidly judged in real time without being limited by day or night conditions, and the method is particularly suitable for back-mounted portable navigation products.

Description

technical field [0001] The present invention relates to the field of image processing, more specifically, to a method and system for judging vehicle steering based on comparison of image fuzziness. Background technique [0002] With the continuous development of society, cars are becoming more and more popular among the masses, and more and more people own cars. However, due to the frequent occurrence of automobile accidents, the driving safety of automobiles has become a key issue that cannot be ignored in today's society. Automobile accidents often occur at the corners. When the traffic recorder detects that the vehicle is turning and the speed is too fast, it needs to generate an alarm to remind the driver of safety, especially for portable after-installed navigation instruments, because they cannot be used like the original equipment of the vehicle. Convenient acquisition of steering wheel signals and axle steering signals will often increase the judgment time and make ...

AI Technical Summary

Problems solved by technology

This solution judges the turning state by matching the synthetic image of the vehicle-mounted surround view system. Due to the large amount of surround view image data and the high computational complexity of the matching algorithm, a large amount of computing resources and speed will be consumed, resulting in too long time for judging the turning state. Not very practical

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