Video-Codec-Modellverarbeitungsverfahren, Videocodierungsverfahren, Videodecodierungsverfahren und Zugehörige Vorrichtung

Details

Veröffentlichungs-Nr.

EP4723629

Anmeldetag

25. Juli 2024

Veröffentlichung

3. April 2025

Rechtsraum

EP

Abstract

A video codec model processing method, executed by a computing device and comprising : acquiring a training video frame, extracting a feature map of the training video frame by means of a video codec model, and determining scale parameter values respectively corresponding to feature elements in the feature map (202); on the basis of a preset mapping relationship, respectively mapping the scale parameter values corresponding to the feature elements to obtain scale parameter mapping values respectively corresponding to the feature elements, the scale parameter mapping values being within a preset mapping value range (204); acquiring a constraint reference mapping value corresponding to each scale parameter mapping value, wherein the distance between the constraint reference mapping value and a rounding boundary value of the scale parameter mapping value corresponding to the constraint reference mapping value is greater than the distance between the scale parameter mapping value corresponding to the constraint reference mapping value and the rounding boundary value (206); on the basis of the difference between the scale parameter mapping value corresponding to each feature element and the constraint reference mapping value corresponding to each scale parameter mapping value, determining a quantization constraint loss of the training video frame (208); and updating at least some of model parameters of the video codec model on the basis of the quantization constraint loss, so as to obtain a trained video codec model (210).

Anmelder

Firma

Tencent Technology (Shenzhen) Company Limited

Land

🇨🇳 China