有效的地下道位置识别算法基于最远点子样本和双重注意力变压器
Xinghua Chai1, Jianyong Yang1, Xiangming Yan2
154th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China.
Sensors (Basel, Switzerland)
|November 25, 2023
概括
一个新的双重注意力变压器网络 (DAT-Net) 改善了在无GPS道中的自主位置识别. 这种高效的算法通过有效处理点云数据来提高准确性,以实现可靠的导航.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 计算机视觉 计算机视觉
- 人工智能的人工智能
背景情况:
- 在没有GPS的环境中,如地下道,自主导航至关重要.
- 现有的位置识别算法与道中常见的稀疏和杂的点云数据作斗争.
- 确保高识别准确性和稳定性是一个重大挑战.
研究的目的:
- 为地下道提出一个高效的点云位置识别算法,双注意力变压器网络 (DAT-Net).
- 在有限的地下道数据中增强有效特征的利用.
- 提高自主位置识别系统的准确性和稳定性.
主要方法:
- 实现了最远点下方采样模块,以减少点云的大小并保留基本的形状信息.
- 开发了一种双重注意力变压器模块,采用多头自我注意力来进行本地信息交换.
- 整合了局部描述符与全球描述符,使用特征融合层进行强大的全球特征表示.
主要成果:
- 拟议的DAT-Net在SubT-Tunnel数据集上获得了0.841的平均F1评分.
- 与现有的最先进的算法相比,证明了更高的识别准确性.
- 在具有挑战性的道环境中,在位置识别测试中展示了增强的稳定性.
结论:
- DAT-Net提供了一种有效的解决方案,用于在GPS无法访问的地下道中进行自主位置识别.
- 该算法的双重注意力机制和功能融合增强了稀疏点云数据的处理.
- 这些发现表明,在地下环境中,强大而准确的机器人导航取得了重大进展.
相关概念视频
01:19Root-Locus Method
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block diagram,...
This system can be represented by a block diagram,...
01:30Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...
01:29Application of Linearization and Approximation
A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...