Abstract: Examples of the disclosure data enable interactions of a user with an object to be used to improve the classification of the object in mediated reality applications. In examples of the disclosure LiDAR data is obtained from a mediated reality device. The mediated reality device is used by a user and the LiDAR data includes data points representing at least part of an object. Position data relating to a position of the user's hand relative to the object is obtained and interaction data indicating how the user's hand is interacting with the object is also obtained. At least some of the interaction data is obtained from an electromyography device coupled to the user. The position data is used to map the interaction data to the LiDAR data to enable the interaction data to be used to classify the object.

Abstract: An apparatus, method and computer program is described comprising: detecting, at a second user device, one or more display patterns displayed at a display of a first user device, wherein the one or more display patterns comprise features with spatial variations configured to be detected by a radar module of the second user device; determining at least one of an orientation, position, or size of the first user device based, at least in part, on the one or more display patterns; and determining at least one of an orientation or position of the second user device relative to the first user device within a coordinate system of the first user device.

Abstract: An apparatus, method and computer program is described including: generating a display pattern including features with spatial variations, wherein the spatial variations are configured to enable determination, by a first radar device, of at least one of an orientation of a first user device, position of the first user device, size of a display of the first user device, or one or more gestures associated with the display.