Abstract
Abstract This article presents an overview of the recent standardization activities for point cloud compression (PCC). A point cloud is a 3D data representation used in diverse applications associated with immersive media including virtual/augmented reality, immersive telepresence, autonomous driving and cultural heritage archival. The international standard body for media compression, also known as the Motion Picture Experts Group (MPEG), is planning to release in 2020 two PCC standard specifications: video-based PCC (V-CC) and geometry-based PCC (G-PCC). V-PCC and G-PCC will be part of the ISO/IEC 23090 series on the coded representation of immersive media content. In this paper, we provide a detailed description of both codec algorithms and their coding performances. Moreover, we will also discuss certain unique aspects of point cloud compression.
Highlights
Recent progress in visual capture technology has enabled the capture and digitization of points corresponding to a 3D world scene
A unique aspect of point cloud compression (PCC) standardization work has been the joint participation of both video coding and computer graphics experts, working together to provide a 3D codec standard incorporating state-of-theart technologies from both 2D video coding and computer graphics
We presented the main concepts related to PCC, such as point cloud voxelization, 3D to 2D projection, and 3D data structures
Summary
Recent progress in visual capture technology has enabled the capture and digitization of points corresponding to a 3D world scene. Point clouds are one of the major 3D data representations, which provide, in addition to spatial coordinates, attributes (e.g. color or reflectance) associated with the points in a 3D world. Point clouds in their raw format require a huge amount of memory for storage or bandwidth for transmission.
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