Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (2): 569-575.doi: 10.13229/j.cnki.jdxbgxb20210623

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Semantic topological map building with object semantic grid map

Xian-yu QI1(),Wei WANG2,Lin WANG1,Yu-fei ZHAO1,Yan-peng DONG1   

  1. 1.Beijing Institute of Mechanical Equipment,Beijing 100854,China
    2.School of Mechanical Engineering and Automation,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
  • Received:2021-07-05 Online:2023-02-01 Published:2023-02-28

Abstract:

To construct a topological map with rooms as nodes and based on the object semantic grid map, this paper proposes a topological segmentation method with virtual door detection and a room generation method based on the inclusion relationship of rooms and objects. Firstly, detect the occupied grids that meet the width of the actual doors, then use geometric shapes and object semantics to optimize the detection results, and finally employ the objects contained in the topological nodes to generate the room concepts. Through testing in multiple scenarios, the effectiveness of the algorithm is verified.

Key words: computer application, mobile robots, semantic topological map, room segmentation, room concept generation

CLC Number: 

  • TP242.6

Fig.1

Object semantic grid map"

Fig.2

Flow chart of semantic topological map building"

Fig.3

Flow chart of virtual door detection and optimization"

Fig.4

Result of room segmentation"

Table 1

Statistical result of room segmentation"

参 数形态学距离 变换维诺图虚拟门方法1虚拟门方法2
真实门数量2525252525
虚拟门数量3121192721
正确匹配数量1612101919
虚拟门准确率/%51.6157.1452.6370.3790.48
真实门召回率/%6448407676
平均时间消耗/s0.01930.03320.15180.11730.1188

Table 2

Inclusion probability of room and object"

物体类别卧室卫生间厨房客厅
0.90.0330.0330.033
沙发0.0330.0330.0330.9
坐便器0.0330.90.0330.033
烤箱0.0330.0330.90.033
微波炉0.0330.0330.90.033
洗手池0.050.450.450.05

Fig.5

Result of room concept generation"

Table 3

Statistical result of room concept generation"

项 目卧室卫生间厨房客厅走廊合计
房间数量9636529
正确数量9635528
准确率/%10010010083.3310096.55
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