Object profile judging method

Abstract

The invention discloses an object profile judging method. The method comprises the steps of forming a laser scanning surface through emitting the laser onto an object by means of a laser scanner; receiving the reflected light of the laser when encountering the object by means of the laser scanner; parsing the reflected light by means of the laser scanner to form the reflection information, wherein the reflection information includes the distance and the angle of the object relative to the laser scanner; converting the reflection information to obtain the position coordinate information of the object; and connecting the coordinate information of multiple positions of the object together to form the outline of the object. Based on the object profile judging method, the object profile of the laser scanning surface can be quickly judged. The object profile judging method has the advantages of anti-jamming performance, high resolution, high accuracy, small error, good stability, fast speed and the like.

Description

【Technical Field】 [0001] The invention relates to a method for judging the contour of an object, in particular to a method for judging the contour of an object by laser scanning. 【Background technique】 [0002] The process of urbanization in my country is accelerating, the demand for urban traffic is obviously increasing, and the traffic congestion is getting more and more serious, which affects the normal commuting of residents, aggravates environmental pollution and restricts the normal performance of urban functions. [0003] Multi-lane free flow electronic toll collection technology (Multi-Lane FreeFlowETC, referred to as MLFF) can solve the problems of manpower, congestion and pollution in urban traffic. The so-called multi-lane free flow electronic toll technology means that vehicles can pass through the toll area. Free from lane separation restrictions and no parking induction, vehicles can travel freely through the toll area, and even change lanes within the toll area. The ...

AI Technical Summary

Problems solved by technology

Generally, in the multi-lane free-flow electronic toll collection technology, it is common to install an on-board unit (OBU) on the vehicle, and install a road test unit (RSU) in the toll area at the same time, and use microwave communication technology (DSRC) for inductive billing, or Install radio frequency (RFID) tags on the vehicle, and install induction tags in the toll area to sense passing vehicles; however, there are many limitations in this method, such as interference caused by OBU signal collisions or RFID induction due to other external factors Failure and other problems, resulting in the failure of system billing

In addition, there is another technology based on identifying the vehicle outline, and then charging according to the vehicle type and model identified by the system. However, there are still certain errors in the existing outline recognition method, which makes it difficult to determine the vehicle type and model. Therefore, it is necessary to propose a fast and accurate contour judgment method to solve the bottleneck of the existing multi-lane free-flow electronic toll collection technology

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