To identify the left-eye and right-eye images of stereoscopic pair, a disparity value is measured between the images of the pair for a plurality of image regions to produce a set of disparity values for the image pair. A confidence factor is calculated for each disparity value. A correlation parameter is then determ...

To manage audio visual content, a stream of fingerprints is derived in a fingerprint generator and received at a fingerprint processor that is physically separate from the fingerprint generator. Metadata is generated by processing the fingerprints to detect the sustained occurrence of low values of an audio fingerp...

To detect the presence of a logo in a search image, the positions of edges, in an image of the logo and in the search image, are represented by ratios of distances between the respective edge and a plurality of preceding edges. This can be carried out both horizontally and vertically. A sequence of edges at a select...

Figure 2 A method for repairing scratch impairments in which brightness values for a set of points within a narrow region of the impaired input image that is aligned with an expected scratch direction are modified in a scratch repair process; and the scratch repair process is controlled in dependence upon the relat...

First image data at a lower sampling frequency is up-sampled in a sampling ratio N:M to a higher sampling frequency in an up-sampling filter; and, second image data at the said higher sampling frequency is down-sampled in a sampling ratio M:N to the said lower sampling frequency in a down-sampling filter where the c...

The invention relates to the analysis of characteristics of audio and/or video signals for the generation of audio-visual content signatures.To determine an audio signature a region of interest for example of high entropy -is identified in audio signature data. This region of interest is then provided as an audio si...

A method of identifying the left-eye and the right-eye images of a stereoscopic pair, comprising the steps of comparing the images to locate an occluded region visible in only one of the images; detecting image edges; and identifying a right-eye image where image edges are aligned with a left hand edge of an occlude...