ORBTSDF-SCNet：一种动态场景在线三维重建方法

李翔宇; 张雪芹

doi:10.14135/j.cnki.1006-3080.20211221001

ORBTSDF-SCNet：一种动态场景在线三维重建方法

doi: 10.14135/j.cnki.1006-3080.20211221001

李翔宇,
张雪芹^,

华东理工大学信息科学与工程学院, 上海200237

详细信息

作者简介:
李翔宇（1996—），男，河南开封人，硕士生，主要研究方向为三维重建与深度学习。E-mail：1971089759@qq.com

通讯作者:
张雪芹， E-mail：zxq@ecust.edu.cn

中图分类号: TP391
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- 文章访问数: 57
- HTML全文浏览量: 30
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-21
- 网络出版日期: 2022-04-24

ORBTSDF-SCNet: An Online 3D reconstruction Method for Dynamic Scene

LI Xiangyu,
ZHANG Xueqin^,

School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

摘要

摘要: 传统的三维重建技术在面对移动物体干扰时难以有效完成场景重建任务。针对该问题，本文提出一种基于SLAM（Simultaneous Localization and Mapping）、TSDF（truncated signed distance function）和SCNet（Sample Consistency Networks）实例分割网络的三维重建方法ORBTSDF-SCNet。该方法采用深度相机或双目相机获取重建物体及场景的深度图与RGB图，基于ORB_SLAM2实时获取位姿信息；采用基于结构化点云数据的表面重建算法TSDF与深度图相结合，实现在线三维模型重建；为了消除场景中移动物体对场景三维重建的干扰，提出采用SCNet实例分割网络检测和分割移动物体，并结合优化策略减小检测和实例分割误差以及深度图和RGB图对准误差。通过抠除移动物体，保证了重建场景的完整性。在ICL-NUIM、TUM数据集上的实验表明了本文所提方法的有效性。
- 三维重建 /
- RGB-D SLAM /
- TSDF /
- SCNet
Abstract: One of the important way of 3D model making is 3D reconstruction. At present, 3D scene reconstruction with moving object interference is a research hotspot. To solve this problem, this paper proposes a 3D reconstruction framework named ORBTSDF-SCNet. This framework combines SLAM (Simultaneous Localization And Mapping), TSDF(Truncated Signed Distance Function) and SCNet(Sample Consistency Networks) technology to complete 3D scene reconstruction with moving object interference. In this framework, firstly, aiming at the fact that SLAM system can only output point cloud and can not directly generate 3D model, this paper proposes a 3D reconstruction method ORBTSDF.In this method, depth camera or binocular camera obtains RGBD image of the moving objects and scene, the tracking thread of ORB_SLAM2 is applied to obtains pose information in real time, the surface reconstruction algorithm TSDF is adopted to realize 3D model reconstruction combined with depth image.At the same time, in order to eliminate the interference of moving objects in 3D scene reconstruction, such as image smear, low accuracy or reconstruction failure etc., a deep learning instance segmentation network SCNet is used to detect and segment moving objects. By combining with some optimization strategies, the error of detection and instance segmentation , the alignment error of depth map and RGB map are reduced. When the instance of the moving object is removed, the RGBD image is transmitted back to the part of ORBTSDF to form a 3D scene reconstruction without moving objects. Comparative experiments on ICL-NUM and TUM datasets shows the effectiveness of the proposed method.
- 3D reconstruction /
- RGB-D SLAM /
- TSDF /
- SCNet

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图 1 Tracking线程的基本组成

Figure 1. The basic composition of tracking thread

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图 2 当前帧表面点云映射到立体体素

Figure 2. The depth map to TSDF mesh

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图 3 SCNet网络结构

Figure 3. The network structure of SCNet

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图 4 ORBTSDF-SCNet结构图

Figure 4. The structure of ORBTSDF-SCNet

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图 5 ORBTSDF整体三维重建流程图

Figure 5. The flow chart of 3D reconstruction of ORBTSDF

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图 6 ORBTSDF-SCNet算法流程图

Figure 6. The flow chart of ORBTSDF-SCNet algorithm

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图 7 TUM数据集六序列运行速度(fps)对比

Figure 7. The comparative results of running speed(fps) on six sequences of TUM dataset with different methods

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图 8 ORBTSDF重建效果图

Figure 8. The reconstruction effect of ORBTSDF

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图 9 walk_xyz序列动态重建效果对比图

Figure 9. The dynamic reconstruction effect comparison on walk_xyz sequence

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图 10 walk_hsp序列动态重建效果对比图

Figure 10. The dynamic reconstruction effect comparison on walk_hsp sequence

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表 1 在ICL-NUIM数据集上的ATE RMSE(mm)对比实验结果

Table 1. The comparative results of ATE RMSE(mm) on ICL-NUIM dataset

	DS	RSV2	MRS	KS	FTM	EF	OS2	Ours
kt0	104	26	204	72	497	9	8	6
kt1	29	8	228	5	9	9	162	74
kt2	191	18	189	10	20	14	18	19
kt3	152	433	1090	355	243	106	19	11

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表 2 TUM数据集上不同方法的RMSE(mm)实验结果

Table 2. The comparative results of RMSE(mm) on TUM dataset with different methods

		OF	SM	SD
ATE	walk_hsp	572	143	55
	walk_static	39	8	14
	walk_xyz	667	29	25
	sit_hsp	29	26	23
	sit_static	8	7	7
	sit_xyz	11	15	18
	average	221	38	24
RPE	walk_hsp	39	125	61
	walk_static	667	14	31
	walk_xyz	29	38	20
	sit_hsp	8	37	32
	sit_static	11	15	10
	sit_xyz	8	19	25
	average	127	41	30

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表 3 TUM数据集上不同实例分割网络RMSE(mm)实验结果

Table 3. The comparative results of RMSE(mm) on TUM dataset with different instance segmentation networks

		MR	CMR	HTC	Ours
ATE	walk_hsp	391	265	182	143
	walk_static	10	12	9	8
	walk_xyz	45	29	33	29
	sit_hsp	31	25	42	26
	sit_static	7	8	8	7
	sit_xyz	20	21	26	15
	average	84	60	50	38
RPE	walk_hsp	463	351	126	125
	walk_static	13	25	15	14
	walk_xyz	55	58	39	38
	sit_hsp	41	25	40	37
	sit_static	10	10	10	15
	sit_xyz	26	21	33	19
	average	101	82	44	41

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表 4 在TUM数据集两序列上RMSE(mm)对比实验结果

Table 4. The comparative results of RMSE(mm) on two sequences of TUM dataset

		SF	FF	PF	ours
ATE	walk_sta	350	37	72	14
	walk_xyz	510	210	41	25
	average	430	124	57	19
RPE	walk_sta	180	97	72	31
	walk_xyz	680	290	130	20
	average	430	194	101	25

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表 5 在TUM数据集六序列上RMSE(mm)对比实验结果

Table 5. The comparative results of RMSE(mm) on six sequences of TUM dataset

		VS	EF	CF	MF	ours
ATE	walk_hsp	739	209	803	106	55
	walk_static	327	62	551	35	14
	walk_xyz	874	216	696	104	25
	sit_hsp	180	138	36	52	23
	sit_static	29	9	11	21	7
	sit_xyz	111	26	27	31	18
	average	155	87	182	55	24
RPE	walk_hsp	335	163	400	93	61
	walk_sta	101	58	224	39	31
	walk_xyz	335	163	400	93	20
	sit_hsp	75	102	30	41	32
	sit_static	24	10	11	17	10
	sit_xyz	57	28	27	46	25
	average	155	87	182	55	30

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