Verfahren und Vorrichtung zur Codierung von Videodaten

Details

Veröffentlichungs-Nr.

EP3499885

Aktenzeichen

EP17306811

Anmeldetag

18. Dezember 2017

Veröffentlichung

17. Juli 2024

Erteilung

17. Juli 2024

Rechtsraum

EP

IPC

H04N19/124H04N19/14H04N19/18

Abstract

The present invention concerns a method for encoding a video sequence, comprising the following steps by a processing unit of an encoding device:- splitting a digital image from the video sequence into blocks of values;- for each block:∘ transforming the values of the block into transform coefficients;∘ organizing these transform coefficients into several sets of transform coefficients;∘ quantizing the transform coefficients into quantized coefficients;∘ encoding the block using the quantized coefficients;- encoding the video sequence based on the encoding of the blocks; wherein the quantizing step further comprises for quantized coefficients corresponding to one set of transform coefficients:∘ comparing a sum value representing a result of summing magnitudes of the quantized coefficient values with a threshold, the threshold depending on the number of said summed quantized coefficients, said quantized coefficient magnitudes being comprised within a predefined range; and∘ setting the quantized coefficients to zero if the summing result is below the threshold.

Anmelder

Firmen

CANON KABUSHIKI KAISHA
Axis AB

Land

🇯🇵 Japan

Fachgebiete