中国民航大学学报 ›› 2023, Vol. 41 ›› Issue (4): 44-50.

• 民用航空 • 上一篇    下一篇

基于 RGB-D 图像的航空托运行李测量方法

张威1,2,3,陈宇浩1,张攀1,2,崔明1   

  1. (1.中国民航大学航空工程学院,天津300300;2.民航智慧机场理论与系统重点实验室,天津300300;3.中国民航航空地面特种设备研究基地,天津300300)
  • 收稿日期:2021-12-14 修回日期:2022-01-05 出版日期:2023-08-25 发布日期:2023-10-25
  • 基金资助:
    天津市飞机维修与民航地面特种设备技术工程中心开放基金课题(TACSTEC2022003);
    天津市研究生科研创新项目(2022SKYZ247);中央高校基本科研业务费专项(3122023018,3122023031)

Measurement method of airline checked baggage based on#br# RGB-D image#br#

ZHANG Wei 1,2,3 , CHEN Yuhao1 , ZHANG Pan1,2 , CUI Ming1   

  1. (1. College of Aeronautical Engineering, CAUC, Tianjin 300300, China; 2. Key Laboratory of Smart Airport Theory and System, Tianjin 300300, China; 3. CAAC Aviation Special Ground Equipment Research Base, Tianjin 300300, China)
  • Received:2021-12-14 Revised:2022-01-05 Online:2023-08-25 Published:2023-10-25

摘要: 针对机场托运行李码垛自动化流程中行李形位测量精度不高的问题,提出了一种基于RGB-D图像的航空托运行李形位测量方法。首先利用相机内参从RGB-D图像中解析出行李的图像和点云数据,通过聚类和透视变换等手段提取出行李主体的三维点云和二维图像数据;然后根据提取所得行李图像和点云数据对行李旋转角度进行测量,并以包围盒包围质量为依据,选择最优旋转角度进行行李尺寸测量。实验结果表明,综合利用RGB-D中的行李图像和点云信息对行李进行形位测量能有效提升测量精度,与单纯使用点云进行测量相比,行李尺寸测量平均误差下降了21.11%,行李位置测量平均误差下降了11.80%,旋转角度测量平均误差下降了6.09%,实现了航空托运行李的高精度测量,满足了行李码垛自动化流程对行李测量环节的要求。

关键词: 行李测量, 机器视觉, RGB-D 图像, 边缘检测, 点云聚类

Abstract: Aiming at the problem of low accuracy in baggage shape and position measurement in the automated process of airline checked baggage palletizing, a method for measuring the size and position of airline checked baggage based on RGB-D images is proposed. Firstly, the image and point cloud data of the baggage are resolved from the RGB-D image based on the internal parameters of camera, the 3D point cloud and 2D image data of the main part of the baggage subject are extracted through clustering and perspective transformation. Then, the baggage rotation angle is measured based on the extracted baggage image and point cloud data. Finally, the optimal rotation angle is selected for baggage size measurement based on the surrounding quality of the bounding box. The experimental results show that comprehensive utilization of baggage image and point cloud information in RGB-D can effectively improve the accuracy of measuring the shape and position of baggage. Compared to that of the measurement simply using point cloud, the average error of baggage size measurement is decreased by 21.11%, the average error of position measurement is decreased by 11.80% and the average error of rotation angle measurement is de creased by 6.09%. It has achieved high-precision measurement of airline checked baggage and met the require ments of automated baggage palletizing process for baggage measurement

Key words: baggage measurement, machine vision, RGB-D image, edge detection, point cloud clustering

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