Abstract: A method and system for improving a resolution of an image frame is described. The image frame is part of a data stream. The data stream may be a video game, for example. The method comprising the following steps. Sending an encoded version of the image frame from a server to a client device via a first communication channel between the server and the client device. Detecting a reduced bandwidth of the first communication channel. In response to detecting the reduced bandwidth, determining data to be sent to the client device via a second communication channel. The second communication channel is separate to the first communication channel and the data relates to the image frame. The determined data is sent via the second communication channel.

Abstract: A computer-implemented method for image upscaling at a client device is provided. The method comprising: receiving, from a server device, an image which is one of a plurality of images forming an image stream, wherein the image comprises a plurality of image portions; determining a first group of one or more image portions from the plurality of image portions to apply a first image upscaling process to from a plurality of available image upscaling processes; selecting the first group of image portions based on the determination; and applying the first image upscaling process to the first group of image portions. The upscaling process may be an image upscaling process such as super resolution.