论文标题
腿部运动的粗糙地形的多重平面区域表征
Polytopic Planar Region Characterization of Rough Terrains for Legged Locomotion
论文作者
论文摘要
本文研究了从深度摄像机读数中构建平面区域的多重代表的问题。这个问题对于复杂环境中的地形映射非常重要，并且在腿部运动应用中具有巨大的潜力。为了解决多重平面区域表征问题，我们提出了一个两阶段的解决方案方案。在第一阶段，嵌入深度图像序列中的平面区域首先单独提取，然后合并以建立一个仅包含所选框架中平面区域的地形图。为了简化适用于腿部机器人的立足计划的平面区域的表示，我们在第二阶段通过低维度的多面体进一步近似提取的平面区域。借助多重表示，所提出的方法在准确性和简单性之间取得了巨大的平衡。对RGB-D摄像机进行了实验验证，以证明所提出的方案的性能。所提出的方案成功地通过多面体以可接受的精度来表征平面区域。更重要的是，在整个测试中，整体感知方案的运行时间小于10ms（即> 100Hz），这强烈说明了本文开发的我们方法的优势。
This paper studies the problem of constructing polytopic representations of planar regions from depth camera readings. This problem is of great importance for terrain mapping in complicated environment and has great potentials in legged locomotion applications. To address the polytopic planar region characterization problem, we propose a two-stage solution scheme. At the first stage, the planar regions embedded within a sequence of depth images are extracted individually first and then merged to establish a terrain map containing only planar regions in a selected frame. To simplify the representations of the planar regions that are applicable to foothold planning for legged robots, we further approximate the extracted planar regions via low-dimensional polytopes at the second stage. With the polytopic representation, the proposed approach achieves a great balance between accuracy and simplicity. Experimental validations with RGB-D cameras are conducted to demonstrate the performance of the proposed scheme. The proposed scheme successfully characterizes the planar regions via polytopes with acceptable accuracy. More importantly, the run time of the overall perception scheme is less than 10ms (i.e., > 100Hz) throughout the tests, which strongly illustrates the advantages of our approach developed in this paper.
