Direct orientation induction method for road rescue equipment based on vehicle bottom shadow locating license plate

Abstract

The positive direction induction method of road rescue equipment based on the vehicle bottom shadow to locate the license plate. This method first sets the interest area of ​​the vehicle bottom shadow; secondly, performs the vehicle bottom shadow segmentation operation on the gray image of the area; and then performs the vehicle bottom shadow extraction operation ; Furthermore, according to the position of the shadow of the vehicle bottom, determine the area of ​​interest of the license plate, convert the image of the area into a grayscale image, and perform Gaussian smoothing filtering, Previte edge detection in the vertical direction and binarization; then, according to the The screening algorithm of candidate point set and valid point set is proposed to filter the edge points; after that, the valid points are connected by morphological method, and are screened according to the area and length characteristics of the license plate area to obtain the license plate area and the center position of the license plate; Finally, according to the position difference between the center of the license plate and the center of the image in the lateral direction, the towing induction is implemented. The positive orientation induction method proposed by the invention has strong environmental adaptability and anti-interference ability.

Description

technical field [0001] The invention belongs to the field of intelligent operation of road rescue equipment, and in particular relates to a method for inducing the positive orientation of road rescue equipment based on vehicle bottom shadow positioning license plate. Background technique [0002] With the rapid development of transportation and automobile industry, the mileage of highways and car ownership in the world are increasing rapidly. In sudden public safety incidents, road traffic accidents account for the largest proportion. In recent years, road traffic accidents account for all The proportion of the total number of such safety accidents remains high, even exceeding 70%, and the death toll accounts for 83% of the total death toll of various safety accidents, which has become the public safety issue that the masses and government departments are most concerned about. After a road traffic accident occurs, if the accident vehicle cannot be quickly and efficiently cle...

AI Technical Summary

Problems solved by technology

In the traditional towing induction process, the operation of aligning the support arm of the road rescue equipment with the front wheel of the accident vehicle depends on the driver's experience, which is time-consuming and inefficient

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