论文标题
有效数据广播的点云压缩:性能比较
Point Cloud Compression for Efficient Data Broadcasting: A Performance Comparison
论文作者
论文摘要
第五代(5G)无线网络的全球商业化以及连接和自动驾驶汽车(CAVS)提供的令人兴奋的可能性正在推动异质传感器部署,以在汽车环境中跟踪动态物体。其中,光检测和范围(LIDAR)传感器目睹了人们对车辆网络的应用似乎特别有前途的流行。确实可以对周围环境产生三维(3D)映射,可用于对象检测,识别和地形。这些数据被编码为点云,当传输时,该数据可能会对通信系统构成重大挑战,因为它可以轻松拥挤无线通道。沿着这些线条,本文研究了如何以快速有效的方式压缩点云。都考虑了2D和面向3D的方法,并根据(DE)压缩时间,效率和解压缩帧的质量分析相应技术的性能。我们证明,由于矩阵形式保存了激光镜帧,通常用于2D图像的压缩方法比专门针对3D点云设计的结果具有等效的结果,即使不是更好。
The worldwide commercialization of fifth generation (5G) wireless networks and the exciting possibilities offered by connected and autonomous vehicles (CAVs) are pushing toward the deployment of heterogeneous sensors for tracking dynamic objects in the automotive environment. Among them, Light Detection and Ranging (LiDAR) sensors are witnessing a surge in popularity as their application to vehicular networks seem particularly promising. LiDARs can indeed produce a three-dimensional (3D) mapping of the surrounding environment, which can be used for object detection, recognition, and topography. These data are encoded as a point cloud which, when transmitted, may pose significant challenges to the communication systems as it can easily congest the wireless channel. Along these lines, this paper investigates how to compress point clouds in a fast and efficient way. Both 2D- and a 3D-oriented approaches are considered, and the performance of the corresponding techniques is analyzed in terms of (de)compression time, efficiency, and quality of the decompressed frame compared to the original. We demonstrate that, thanks to the matrix form in which LiDAR frames are saved, compression methods that are typically applied for 2D images give equivalent results, if not better, than those specifically designed for 3D point clouds.