Adaptive Binarisiererauswahl zur Bild- und Videocodierung

Details

Veröffentlichungs-Nr.

EP3182710

Aktenzeichen

EP16202896

Anmeldetag

8. Dezember 2016

Veröffentlichung

2. Juni 2021

Erteilung

2. Juni 2021

Rechtsraum

EP

IPC

H04N19/91H04N19/13H03M7/40H04N19/70

Abstract

Methods and devices for image and video coding using arithmetic coding. The binarization of symbols in an encoder and decoder is adaptive based on changes to the probability distribution as symbols are encoded/decoded. A binarizer may be generated based upon a probability distribution, used to binarize a symbol, and then the probability distribution is updated based on the symbol. Updates to the binarizer may be made after each symbol, after a threshold number of symbols, or once the updated probability distribution differs by more than a threshold amount from the probability distribution used in generating the current binarizer. The probability distributions may be context-specific.

Anmelder

Firma

BlackBerry Limited

Land

🇨🇦 Kanada

Fachgebiete