Spatial-information Processing Technology for Establishing a 4D Digital Platform

Abstract

The four-dimensional (4D) digital platform integrates various sensing data about humans, things, and environments in real time into high-precision spatial information, enabling fusion with various industries' platforms and future predictions. The platform achieves these by matching and integrating 4D information such as latitude, longitude, altitude, and time with high accuracy on an advanced geospatialinformation database. For maintaining an advanced geospatial-information database with high accuracy and abundant semantic information, this article introduces two spatial-information processing technologies: (i) real-world digitalization to detect features from images and sparse/low-density 3D point clouds and (ii) 4D-point-cloud coding that efficiently stores and uses 3D data including time variations.

Researching AI Technologies to Support and Substitute Human Activities

“…Finally, to achieve a fourth-dimensional (4D) digital platform [11] that integrates various types of sensing data in real time and enables a variety of future predictions, the article "Spatial-information Processing Technology for Establishing a 4D Digital Platform" [12] introduces technology for digitalizing real-world space and point-cloud-coding technology for efficiently compressing 3D data that include temporal changes. These are technologies for efficient learning with a small amount of data and achieving breakthroughs in the performance of current technologies.…”