College of Computer Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China.
College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China.
Sensors (Basel). 2020 Dec 28;21(1):140. doi: 10.3390/s21010140.
Real-time consistent plane detection (RCPD) from structured point cloud sequences facilitates various high-level computer vision and robotic tasks. However, it remains a challenge. Existing techniques for plane detection suffer from a long running time or the problem that the plane detection result is not precise. Meanwhile, labels of planes are not consistent over the whole image sequence due to plane loss in the detection stage. In order to resolve these issues, we propose a novel superpixel-based real-time plane detection approach, while keeping their consistencies over frames simultaneously. In summary, our method has the following key contributions: (i) a real-time plane detection algorithm to extract planes from raw structured three-dimensional (3D) point clouds collected by depth sensors; (ii) a superpixel-based segmentation method to make the detected plane exactly match its actual boundary; and, (iii) a robust strategy to recover the missing planes by utilizing the contextual correspondences information in adjacent frames. Extensive visual and numerical experiments demonstrate that our method outperforms state-of-the-art methods in terms of efficiency and accuracy.
从结构化点云序列中进行实时一致的平面检测(RCPD)有助于实现各种高级计算机视觉和机器人任务。然而,这仍然是一个挑战。现有的平面检测技术要么运行时间长,要么检测结果不精确。同时,由于在检测阶段丢失了平面,整个图像序列中的平面标签并不一致。为了解决这些问题,我们提出了一种新颖的基于超像素的实时平面检测方法,同时保持它们在帧间的一致性。总之,我们的方法有以下几个关键贡献:(i)一种实时的平面检测算法,用于从深度传感器采集的原始结构化三维(3D)点云中提取平面;(ii)一种基于超像素的分割方法,使检测到的平面与其实际边界精确匹配;以及,(iii)一种通过利用相邻帧中的上下文对应信息来恢复丢失平面的稳健策略。广泛的视觉和数值实验表明,我们的方法在效率和准确性方面优于最先进的方法。