Adaptive Transformationsauswahl für Geometrische Raumteilung

Details

Veröffentlichungs-Nr.

EP4730792

Anmeldetag

18. Oktober 2024

Veröffentlichung

22. April 2026

Rechtsraum

EP

Abstract

In various implementations, method and devices are disclosed that adapts the selection of transform set for both regular and regression-based Spatial Geometric Partitioning Mode SGPM modes. For instance, for a regular SGPM block, a virtual intra prediction mode VIPM corresponding to a largest magnitude of values in a histogram of gradients (HoG) computed on a neighboring template is used to select the transform set instead of the split direction of the SGPM. For instance, for a regression-based SGPM block, a pre-defined scheme of transform set may be used for that block independently of the VIPM. According to various embodiments, the transform selection criterion may adaptively switch between using the VIPM versus using the split direction for SGPM. The transform selection may depend on various factors such as size of each partition, an intra predictor type (directional vs non-directional), a size of a maximum bin in HoG, a variance of HoG.

Anmelder

Firma

InterDigital CE Patent Holdings, SAS

Land

🇫🇷 Frankreich