Verfahren und Vorrichtungen zur Prädiktiven Codierung von Punktwolken

Details

Veröffentlichungs-Nr.

EP3553747

Aktenzeichen

EP18305417

Anmeldetag

9. April 2018

Veröffentlichung

1. September 2021

Erteilung

1. September 2021

Rechtsraum

EP

IPC

G06T9/00G06T9/40

Abstract

Methods and devices for encoding a point cloud. A bit sequence signaling an occupancy pattern for sub-volumes of a volume is coded. Predictive coding is used to find a set of predicted points, from which a corresponding predicted occupancy pattern may be determined. The predicted occupancy pattern may be used to determine the contexts for entropy coding the occupancy pattern. The determination may include determining for each sub-volume, whether it contains a predicted point or not and, in some cases, the count of predicted points within the sub-volume. Various threshold numbers of predicted points may cause the selection of different context sets for coding the occupancy pattern. The predictive coding may be enabled by determining that the prediction of occupancy of a parent volume to the volume met a threshold level of accuracy.

Anmelder

Firmen

BlackBerry Limited
2236008 Ontario, Inc.

Land

🇨🇦 Kanada

Fachgebiete