《计算机应用》唯一官方网站 ›› 2026, Vol. 46 ›› Issue (8): 2584-2593.DOI: 10.11772/j.issn.1001-9081.2025070887
收稿日期:2025-08-04
修回日期:2025-09-29
接受日期:2025-10-10
发布日期:2025-11-05
出版日期:2026-08-10
通讯作者:
沈东奇
作者简介:刘明(1973—),男,云南曲靖人,研究员,博士,主要研究方向:自动控制与导航、机器人SLAM算法基金资助:
Ming LIU1,2, Dongqi SHEN1,2(
), Ziyang MENG1,2
Received:2025-08-04
Revised:2025-09-29
Accepted:2025-10-10
Online:2025-11-05
Published:2026-08-10
Contact:
Dongqi SHEN
About author:LIU Ming, born in 1973, Ph. D., research fellow. His research interests include automatic control and navigation, robot SLAM algorithms.Supported by:摘要:
针对点云配准中因部分重叠、遮挡与噪声干扰导致的配准精度差与鲁棒性不足的问题,提出一种双分支结构下的多层次特征融合的点云配准网络DMFNet(Dual-branch Multi-level Feature Fusion Network)。该网络在编码阶段并行设置旋转分支与平移分支,并在浅层、中层与深层分别引入自注意力融合与交叉注意力融合模块,从而实现源点云与参考点云之间的多尺度特征交互与深度融合,同时,设计了旋转与平移特征融合模块以增强姿态估计能力;在回归阶段基于轻量级Set Transformer回归器,采用多层诱导注意力块与注意力池化模块来直接回归四元数与平移向量。DMFNet不依赖重叠区域的检测或显式掩码估计,具备更强的适应性与泛化能力。在ModelNet40数据集上与6种点云配准方法进行对比实验,并在斯坦福3D扫描数据集进行泛化能力实验。实验结果表明,在ModelNet40数据集上添加噪声的情况下二次采样,相较于最大极大团配准(MAC)方法,DMFNet在RMSE(t)和Error(R)指标上分别降低了21.32%和14.47%,展现出更优的鲁棒性与配准精度。
中图分类号:
刘明, 沈东奇, 孟子洋. 双分支结构下多层次特征融合的点云配准网络[J]. 计算机应用, 2026, 46(8): 2584-2593.
Ming LIU, Dongqi SHEN, Ziyang MENG. Point cloud registration network with dual-branch multi-level feature fusion[J]. Journal of Computer Applications, 2026, 46(8): 2584-2593.
| 方法 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 22.666 | 26.354 | 0.235 8 | 0.263 1 | 14.062 | 19.256 | 0.161 1 | 0.168 9 | 28.359 | 36.265 | 0.341 2 | 0.359 5 |
| DCP | 12.315 | 12.356 | 0.069 9 | 0.086 9 | 9.135 | 8.956 | 0.056 2 | 0.058 3 | 7.754 | 9.165 | 0.102 8 | 0.134 2 |
| RPMNet | 1.356 | 2.247 | 0.022 5 | 0.027 6 | 0.729 | 1.165 | 0.008 5 | 0.014 2 | 1.446 | 2.256 | 0.019 1 | 0.031 1 |
| RGM | 3.511 | 4.977 | 0.040 4 | 0.048 9 | 1.301 | 1.810 | 0.014 1 | 0.019 5 | 2.506 | 3.523 | 0.029 1 | 0.039 1 |
| OMNet | 0.773 | 1.391 | 0.015 2 | 0.023 1 | 0.271 | 0.569 | 0.005 6 | 0.009 5 | 0.556 | 1.121 | 0.012 1 | 0.019 7 |
| MAC | 0.761 | 0.985 | 0.013 3 | 0.020 3 | 0.248 | 0.487 | 0.005 1 | 0.009 0 | 0.485 | 0.956 | 0.010 3 | 0.017 1 |
| FINet | 0.735 | 1.288 | 0.011 5 | 0.019 5 | 0.231 | 0.357 | 0.003 5 | 0.006 1 | 0.497 | 0.710 | 0.008 1 | 0.014 9 |
| DMFNet | 0.731 | 0.823 | 0.011 2 | 0.019 2 | 0.228 | 0.356 | 0.003 1 | 0.006 9 | 0.452 | 0.703 | 0.007 9 | 0.014 1 |
表1 未见点云的实验结果
Tab. 1 Experimental results on unseen point clouds
| 方法 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 22.666 | 26.354 | 0.235 8 | 0.263 1 | 14.062 | 19.256 | 0.161 1 | 0.168 9 | 28.359 | 36.265 | 0.341 2 | 0.359 5 |
| DCP | 12.315 | 12.356 | 0.069 9 | 0.086 9 | 9.135 | 8.956 | 0.056 2 | 0.058 3 | 7.754 | 9.165 | 0.102 8 | 0.134 2 |
| RPMNet | 1.356 | 2.247 | 0.022 5 | 0.027 6 | 0.729 | 1.165 | 0.008 5 | 0.014 2 | 1.446 | 2.256 | 0.019 1 | 0.031 1 |
| RGM | 3.511 | 4.977 | 0.040 4 | 0.048 9 | 1.301 | 1.810 | 0.014 1 | 0.019 5 | 2.506 | 3.523 | 0.029 1 | 0.039 1 |
| OMNet | 0.773 | 1.391 | 0.015 2 | 0.023 1 | 0.271 | 0.569 | 0.005 6 | 0.009 5 | 0.556 | 1.121 | 0.012 1 | 0.019 7 |
| MAC | 0.761 | 0.985 | 0.013 3 | 0.020 3 | 0.248 | 0.487 | 0.005 1 | 0.009 0 | 0.485 | 0.956 | 0.010 3 | 0.017 1 |
| FINet | 0.735 | 1.288 | 0.011 5 | 0.019 5 | 0.231 | 0.357 | 0.003 5 | 0.006 1 | 0.497 | 0.710 | 0.008 1 | 0.014 9 |
| DMFNet | 0.731 | 0.823 | 0.011 2 | 0.019 2 | 0.228 | 0.356 | 0.003 1 | 0.006 9 | 0.452 | 0.703 | 0.007 9 | 0.014 1 |
| 方法 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 26.911 | 45.265 | 0.252 5 | 0.356 2 | 18.658 | 28.456 | 0.175 3 | 0.231 5 | 36.748 | 53.514 | 0.367 5 | 0.461 2 |
| DCP | 13.521 | 12.956 | 0.082 5 | 0.111 2 | 10.221 | 9.512 | 0.059 6 | 0.075 1 | 12.543 | 11.212 | 0.122 5 | 0.151 1 |
| RPM-Net | 3.938 | 7.546 | 0.044 1 | 0.056 4 | 1.386 | 2.518 | 0.015 1 | 0.026 4 | 2.608 | 4.751 | 0.031 8 | 0.054 6 |
| RGM | 4.986 | 7.359 | 0.040 4 | 0.063 1 | 1.702 | 2.214 | 0.016 8 | 0.023 1 | 3.255 | 4.395 | 0.034 8 | 0.050 2 |
| OMNet | 3.722 | 4.164 | 0.040 3 | 0.042 2 | 1.327 | 1.702 | 0.016 1 | 0.018 1 | 2.666 | 3.258 | 0.033 0 | 0.038 8 |
| MAC | 3.624 | 4.561 | 0.036 8 | 0.038 4 | 1.275 | 1.538 | 0.014 9 | 0.016 8 | 2.586 | 2.914 | 0.031 2 | 0.036 6 |
| FINet | 3.641 | 4.123 | 0.036 4 | 0.041 1 | 1.287 | 1.421 | 0.013 5 | 0.015 7 | 2.514 | 2.697 | 0.029 4 | 0.036 3 |
| DMFNet | 3.361 | 3.845 | 0.032 9 | 0.034 1 | 1.251 | 1.395 | 0.012 8 | 0.015 5 | 2.462 | 2.687 | 0.028 8 | 0.033 0 |
表2 未见类别的实验结果
Tab. 2 Experimental results on unseen categories
| 方法 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 26.911 | 45.265 | 0.252 5 | 0.356 2 | 18.658 | 28.456 | 0.175 3 | 0.231 5 | 36.748 | 53.514 | 0.367 5 | 0.461 2 |
| DCP | 13.521 | 12.956 | 0.082 5 | 0.111 2 | 10.221 | 9.512 | 0.059 6 | 0.075 1 | 12.543 | 11.212 | 0.122 5 | 0.151 1 |
| RPM-Net | 3.938 | 7.546 | 0.044 1 | 0.056 4 | 1.386 | 2.518 | 0.015 1 | 0.026 4 | 2.608 | 4.751 | 0.031 8 | 0.054 6 |
| RGM | 4.986 | 7.359 | 0.040 4 | 0.063 1 | 1.702 | 2.214 | 0.016 8 | 0.023 1 | 3.255 | 4.395 | 0.034 8 | 0.050 2 |
| OMNet | 3.722 | 4.164 | 0.040 3 | 0.042 2 | 1.327 | 1.702 | 0.016 1 | 0.018 1 | 2.666 | 3.258 | 0.033 0 | 0.038 8 |
| MAC | 3.624 | 4.561 | 0.036 8 | 0.038 4 | 1.275 | 1.538 | 0.014 9 | 0.016 8 | 2.586 | 2.914 | 0.031 2 | 0.036 6 |
| FINet | 3.641 | 4.123 | 0.036 4 | 0.041 1 | 1.287 | 1.421 | 0.013 5 | 0.015 7 | 2.514 | 2.697 | 0.029 4 | 0.036 3 |
| DMFNet | 3.361 | 3.845 | 0.032 9 | 0.034 1 | 1.251 | 1.395 | 0.012 8 | 0.015 5 | 2.462 | 2.687 | 0.028 8 | 0.033 0 |
| 方法 | RMSE(R) | MAE(R) | RMSE(t) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 25.482 | 28.654 | 19.299 | 21.456 | 0.256 2 | 0.256 2 | 0.186 6 | 0.195 4 | 37.699 | 42.564 | 0.385 5 | 0.395 6 |
| DCP | 13.956 | 12.546 | 10.256 | 9.852 | 0.079 8 | 0.101 2 | 0.061 5 | 0.078 4 | 12.021 | 12.425 | 0.125 6 | 0.154 5 |
| RPMNet | 4.117 | 6.212 | 1.589 | 2.412 | 0.047 1 | 0.064 2 | 0.018 1 | 0.028 6 | 2.985 | 4.985 | 0.038 8 | 0.054 6 |
| RGM | 5.968 | 6.452 | 2.459 | 3.123 | 0.057 9 | 0.065 4 | 0.025 0 | 0.031 2 | 4.769 | 6.523 | 0.051 6 | 0.062 3 |
| OMNet | 3.571 | 4.414 | 1.580 | 1.952 | 0.039 1 | 0.048 8 | 0.017 7 | 0.022 2 | 3.072 | 3.845 | 0.035 3 | 0.043 2 |
| MAC | 3.501 | 4.121 | 1.426 | 1.812 | 0.036 6 | 0.046 9 | 0.017 2 | 0.019 8 | 2.885 | 3.688 | 0.033 1 | 0.040 2 |
| FINet | 3.754 | 3.956 | 1.395 | 1.691 | 0.034 0 | 0.037 4 | 0.014 9 | 0.017 6 | 2.771 | 3.264 | 0.031 6 | 0.036 6 |
| DMFNet | 3.415 | 3.741 | 1.369 | 1.689 | 0.033 9 | 0.036 9 | 0.015 9 | 0.017 9 | 2.662 | 3.154 | 0.030 0 | 0.035 5 |
表3 添加高斯噪声的实验结果
Tab. 3 Experimental results with adding Gaussian noise
| 方法 | RMSE(R) | MAE(R) | RMSE(t) | MAE(t) | Error(R) | Error(t) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | OS | TS | |
| PointNetLK | 25.482 | 28.654 | 19.299 | 21.456 | 0.256 2 | 0.256 2 | 0.186 6 | 0.195 4 | 37.699 | 42.564 | 0.385 5 | 0.395 6 |
| DCP | 13.956 | 12.546 | 10.256 | 9.852 | 0.079 8 | 0.101 2 | 0.061 5 | 0.078 4 | 12.021 | 12.425 | 0.125 6 | 0.154 5 |
| RPMNet | 4.117 | 6.212 | 1.589 | 2.412 | 0.047 1 | 0.064 2 | 0.018 1 | 0.028 6 | 2.985 | 4.985 | 0.038 8 | 0.054 6 |
| RGM | 5.968 | 6.452 | 2.459 | 3.123 | 0.057 9 | 0.065 4 | 0.025 0 | 0.031 2 | 4.769 | 6.523 | 0.051 6 | 0.062 3 |
| OMNet | 3.571 | 4.414 | 1.580 | 1.952 | 0.039 1 | 0.048 8 | 0.017 7 | 0.022 2 | 3.072 | 3.845 | 0.035 3 | 0.043 2 |
| MAC | 3.501 | 4.121 | 1.426 | 1.812 | 0.036 6 | 0.046 9 | 0.017 2 | 0.019 8 | 2.885 | 3.688 | 0.033 1 | 0.040 2 |
| FINet | 3.754 | 3.956 | 1.395 | 1.691 | 0.034 0 | 0.037 4 | 0.014 9 | 0.017 6 | 2.771 | 3.264 | 0.031 6 | 0.036 6 |
| DMFNet | 3.415 | 3.741 | 1.369 | 1.689 | 0.033 9 | 0.036 9 | 0.015 9 | 0.017 9 | 2.662 | 3.154 | 0.030 0 | 0.035 5 |
| 模型 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) |
|---|---|---|---|---|---|---|
| Armadillo | 1.445 | 0.008 8 | 0.438 | 0.011 1 | 1.322 | 0.009 5 |
| Bunny | 1.429 | 0.008 5 | 0.420 | 0.010 9 | 1.317 | 0.009 3 |
表4 Stanford数据集实验结果
Tab. 4 Experimental results on Stanford dataset
| 模型 | RMSE(R) | RMSE(t) | MAE(R) | MAE(t) | Error(R) | Error(t) |
|---|---|---|---|---|---|---|
| Armadillo | 1.445 | 0.008 8 | 0.438 | 0.011 1 | 1.322 | 0.009 5 |
| Bunny | 1.429 | 0.008 5 | 0.420 | 0.010 9 | 1.317 | 0.009 3 |
| Branch | RMSE(R) | RMSE(t) | Error(R) | Error(t) |
|---|---|---|---|---|
| Single Branch | 5.323 | 0.054 8 | 5.174 | 0.072 5 |
| Dual Branches | 5.135 | 0.052 2 | 4.943 | 0.071 1 |
表5 分支消融实验结果
Tab. 5 Branch ablation experiment results
| Branch | RMSE(R) | RMSE(t) | Error(R) | Error(t) |
|---|---|---|---|---|
| Single Branch | 5.323 | 0.054 8 | 5.174 | 0.072 5 |
| Dual Branches | 5.135 | 0.052 2 | 4.943 | 0.071 1 |
| 序号 | SRFM | SFFM | CFFM | RTFM | Lpose | Ltriplet | Ldropout | RMSE(R) | RMSE(t) | Error(R) | Error(t) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 5.135 | 0.052 2 | 4.943 | 0.071 1 | |||||||
| 2 | √ | 4.911 | 0.049 8 | 4.661 | 0.068 6 | ||||||
| 3 | √ | √ | 4.394 | 0.046 2 | 4.134 | 0.057 6 | |||||
| 4 | √ | √ | √ | 3.965 | 0.040 9 | 3.435 | 0.045 1 | ||||
| 5 | √ | √ | √ | √ | 3.518 | 0.036 2 | 2.913 | 0.036 5 | |||
| 6 | √ | √ | √ | √ | √ | 3.484 | 0.035 7 | 2.806 | 0.034 8 | ||
| 7 | √ | √ | √ | √ | √ | √ | 3.429 | 0.034 8 | 2.701 | 0.031 5 | |
| 8 | √ | √ | √ | √ | √ | √ | √ | 3.415 | 0.033 9 | 2.662 | 0.030 0 |
表6 特征融合模块和损失函数消融实验结果
Tab. 6 Ablation experiment results of feature fusion module and loss function
| 序号 | SRFM | SFFM | CFFM | RTFM | Lpose | Ltriplet | Ldropout | RMSE(R) | RMSE(t) | Error(R) | Error(t) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 5.135 | 0.052 2 | 4.943 | 0.071 1 | |||||||
| 2 | √ | 4.911 | 0.049 8 | 4.661 | 0.068 6 | ||||||
| 3 | √ | √ | 4.394 | 0.046 2 | 4.134 | 0.057 6 | |||||
| 4 | √ | √ | √ | 3.965 | 0.040 9 | 3.435 | 0.045 1 | ||||
| 5 | √ | √ | √ | √ | 3.518 | 0.036 2 | 2.913 | 0.036 5 | |||
| 6 | √ | √ | √ | √ | √ | 3.484 | 0.035 7 | 2.806 | 0.034 8 | ||
| 7 | √ | √ | √ | √ | √ | √ | 3.429 | 0.034 8 | 2.701 | 0.031 5 | |
| 8 | √ | √ | √ | √ | √ | √ | √ | 3.415 | 0.033 9 | 2.662 | 0.030 0 |
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