Vehicle type recognition method and fast vehicle checking system using the same method
US10169674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2018 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jun 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A vehicle type recognition method based on a laser scanner is provided, the method comprising steps of: detecting that a vehicle to be checked has entered into a recognition area; causing a laser scanner to move relative to the vehicle to be checked; scanning the vehicle to be checked using the laser scanner on a basis of columns, and storing and splicing data of each column obtained by scanning to form a three-dimensional image of the vehicle to be checked, wherein a lateral width value is specified for each single column of data; specifying a height difference threshold; and determining a height difference between the height at the lowest position of the vehicle to be checked in data of column N and the height at the lowest position of the vehicle to be checked in data of specified number of columns preceding and/or succeeding to the column N.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.