Abstract: A method of analyzing a set of digital images each having been captured with a digital camera, the method comprising, using at least one processor: a) extracting a camera fingerprint from each image so as to form a set of camera fingerprints, each camera fingerprint being representative of the camera used to capture the image, and being of a first dimension; b) forming a set of dimensionally reduced camera fingerprints from each camera fingerprint, the dimensionally reduced camera fingerprint being of a second dimension smaller than the first dimension; c) forming a first subset of dimensionally reduced camera fingerprints and a second subset of dimensionally reduced camera fingerprints; d) determining a level of similarity between every pairing of the dimensionally reduced camera fingerprints of the first subset; e) determining a level of similarity between every pairing of the dimensionally reduced camera fingerprints of the second subset; f) determining a level of similarity between every pairing of, on th

Abstract: A method of analysing a set of digital images each having been captured with a digital camera, the method comprising, using at least one processor: a) extracting a camera fingerprint from each image so as to form a set of camera fingerprints, each camera fingerprint being representative of the camera used to capture the image, and being of a first dimension; b) forming a set of dimensionally reduced camera fingerprints from each camera fingerprint, the dimensionally reduced camera fingerprint being of a second dimension smaller than the first dimension; c) forming a first subset of dimensionally reduced camera fingerprints and a second subset of dimensionally reduced camera fingerprints; d) determining a level of similarity between every pairing of the dimensionally reduced camera fingerprints of the first subset; e) determining a level of similarity between every pairing of the dimensionally reduced camera fingerprints of the second subset; f) determining a level of similarity between every pairing of, on th

Abstract: A method of tracking the position of a body part, such as a hand, in captured images, the method comprising capturing (10) colour images of a region to form a set of captured images; identifying contiguous skin-colour regions (12) within an initial image of the set of captured images; defining regions of interest (16) containing the skin-coloured regions; extracting (18) image features in the regions of interest, each image feature relating to a point in a region of interest; and then, for successive pairs of images comprising a first image and a second image, the first pair of images having as the first image the initial image and a later image, following pairs of images each including as the first image the second image from the preceding pair and a later image as the second image: extracting (22) image features, each image feature relating to a point in the second image; determining matches (24) between image features relating to the second image and image features relating to in each region of interest in