Verfahren zur Codierung und Decodierung eines Pixelblocks von einem Bewegungsmodell

Details

Veröffentlichungs-Nr.

EP2683165

Aktenzeichen

EP13174457

Anmeldetag

1. Juli 2013

Veröffentlichung

14. Oktober 2015

Erteilung

14. Oktober 2015

Rechtsraum

EP

IPC

H04N19/513H04N19/105H04N19/176H04N19/147H04N19/46H04N19/11

Abstract

The invention involves a method for coding using a parametric motion model of which the parameters are defined from the motion data of the causal neighbourhood. Specifically, the method for coding a current block (B) comprises the following steps: - determine (E1) a prediction block of the current block from a motion model defined by a set of parameters, the model associating a motion vector pointing at a pixel of a prediction block with each pixel of the current block. - calculate (E2) a residual block between the current block and the prediction block, and - code (E3) the residual block. According to the invention, the parameters of the motion model are determined from the motion data associated with the causal neighbourhood blocks (VC) of the current block. Therefore, they can be deducted from parts of images already coded and do not need to be incorporated in the image data stream.

Anmelder

Firma

Thomson Licensing

Land

🇫🇷 Frankreich

Fachgebiete