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arXiv 2303.03048cs.RO
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用于果实检测的基于图的视角运动规划

Graph-based View Motion Planning for Fruit Detection

University of Bonn(波恩大学);Lamarr Institute for Machine Learning and Artificial Intelligence(拉马尔机器学习与人工智能研究所)

Tobias Zaenker, Julius Rückin, Rohit Menon, Marija Popović, Maren Bennewitz

AI总结:

针对甜椒果实遮挡导致监测低效的问题,提出融合机器人运动约束的图视角运动规划器,通过有限视野自适应搜索高信息增益视角序列,提升限时条件下的果实覆盖率。

摘要:

作物监测对于最大化农业生产力和效率至关重要。然而,监测甜椒植株等大型且结构复杂的对象面临重大挑战,尤其是果实频繁受到遮挡。传统的下一最佳视角规划可能导致对作物非结构化且低效的覆盖。为解决这一问题,我们提出一种新颖的视角运动规划器,它构建由可行视角位姿以及相邻位姿之间轨迹组成的图网络,从而考虑机器人运动约束。该规划器在图中搜索具有最高累积信息增益的视角序列,从而实现高效的甜椒植株监测,同时尽量减少遮挡。生成的视角位姿旨在充分覆盖已经检测到的果实并发现新的果实。图及相应的最佳视角位姿序列在有限视野范围内计算,并随着系统收集新信息,以固定时间间隔进行自适应更新。我们通过仿真和真实世界实验验证了方法的有效性;实验使用一台配备 RGB-D 相机并安装在小车上的机械臂。实验结果表明,与最先进的单一 next-best view(下一最佳视角)规划器相比,在给定有限时间时,我们的规划器能够生成视角位姿序列以系统性地覆盖作物,并带来更高的果实覆盖率。

英文摘要:

Crop monitoring is crucial for maximizing agricultural productivity and efficiency. However, monitoring large and complex structures such as sweet pepper plants presents significant challenges, especially due to frequent occlusions of the fruits. Traditional next-best view planning can lead to unstructured and inefficient coverage of the crops. To address this, we propose a novel view motion planner that builds a graph network of viable view poses and trajectories between nearby poses, thereby considering robot motion constraints. The planner searches the graphs for view sequences with the highest accumulated information gain, allowing for efficient pepper plant monitoring while minimizing occlusions. The generated view poses aim at both sufficiently covering already detected and discovering new fruits. The graph and the corresponding best view pose sequence are computed with a limited horizon and are adaptively updated in fixed time intervals as the system gathers new information. We demonstrate the effectiveness of our approach through simulated and real-world experiments using a robotic arm equipped with an RGB-D camera and mounted on a trolley. As the experimental results show, our planner produces view pose sequences to systematically cover the crops and leads to increased fruit coverage when given a limited time in comparison to a state-of-the-art single next-best view planner.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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