Adapting Robustness in Video Coding

摘要

An input receives a video signal comprising a plurality of frames, each comprising a plurality of image portions. Each of the image portions is encoded by an encoder, to generate an encoded signal. An adaptation module selects a respective encoding mode used to encode each of the image portions. The selection is based on a process that balances an estimate of distortion for the image portion if encoded using the respective encoding mode and a bitrate that would be incurred by encoding the image portion using the respective encoding mode. The adaptation module is also configured to determine, within each of one or more frames of the video signal, at least two different regions having different perceptual significance, and to adapt the above-mentioned process in dependence on which of the regions the image portion being encoded is in.

主权项

1. Apparatus comprising:
an input for receiving a video signal comprising a plurality of frames, each comprising a plurality of image portions; an encoder for encoding each of the image portions, to generate an encoded signal; and an adaptation module arranged to select a respective encoding mode used to encode each of the image portions, based on a process that balances an estimate of distortion for the image portion if encoded using the respective encoding mode against a bitrate that would be incurred by encoding the image portion using the respective encoding mode; wherein the adaptation module is configured to determine, within each of one or more frames of the video signal, at least two different regions having different perceptual significance, and to adapt said process in dependence on which of the regions the image portion being encoded is in.