Abstract: A method for self-instruction of a user's hands on an object such as a musical instrument or sports equipment. The method includes accessing finger placement data corresponding to a sequence of predetermined finger placements on a plurality of objects. A position for each finger is sensed on one or more object representations. A finger placement indication is provided on the one or more object representations. The finger placement indication corresponds to each finger of the based on the finger placement data. Each finger placement indication location is compared with an associated sensed position for each finger and a determination is made whether the finger placement indication matches the sensed position for each finger.

Abstract: A method for self-instruction of a user's hands on an object such as a musical instrument or sports equipment. The method includes accessing finger placement data corresponding to a sequence of predetermined finger placements on a plurality of objects. A position for each finger is sensed on one or more object representations. A finger placement indication is provided on the one or more object representations. The finger placement indication corresponds to each finger of the based on the finger placement data. Each finger placement indication location is compared with an associated sensed position for each finger and a determination is made whether the finger placement indication matches the sensed position for each finger.

Abstract: Data processing apparatus arranged to receive successive images from a video camera comprises means for detecting the average image luminance of images received from the video camera; means for detecting whether the average image luminance is lower than a threshold luminance value; and means for initiating a control function of the data processing apparatus in response to detection of an average image luminance which is lower than the threshold luminance value over at least a threshold number of successive images.

Abstract: Data processing apparatus arranged to receive successive images from a video camera comprises means for detecting inter-image motion in an image region associated with a control function of the data processing apparatus; and means for initiating the control function if inter-image motion is detected in the image region in respect of at least a threshold number of the images within a test group of the images.