Examples of the present disclosure relate to a computing device for processing images captured in three-dimensional environments, for the generation of augmented reality scenes. The computing device is configured to obtain an augmented reality anchor, the anchor corresponding to a position and orientation in a real-world environment. The computing device is configured to receive image capture data via data communication from a remote user device. The image capture data comprises an image captured by the user device, the image representing the real-world environment as viewed by the user device. The computing device is configured to process the image capture data to determine spatial data which maps the anchor to the image. The spatial data is usable by the remote user device to insert a virtual object into the image, in accordance with the anchor, to generate an augmented reality scene at the remote user device. The computing device is configured to transmit the determined spatial data via data communication to the remote user device.