Video signal processing, for news data applications, in which change in image content of video sequence is detected using a composite indicator formed by combination of two weighted indicators having predetermined weightings

摘要

The identification stage for change in image content includes:(a) selection of an upper or equal indicator to a predetermined step value; (b) determination of an analysis criteria for variations in the values of at least an indicator; (c) use of the criteria to distinguish in at least two cases whether or not the selected values are significant with respect to the image content change. The indicator is composite, resulting from the weighted combination of at least two indicators according to a predetermined weighting. Method of detecting change in video sequence image content construct at least an indicator representing a change of image content; apply to at least an indicator to image pairs or image zones of the sequence source so as to determine (13) the values of at least an indicator for some of the images or image zones; identify (17) changes in the image content at the heart of the source sequence as a function of a parameter belonging to a group including, the values of at least the indicator, and the variations of the indicator.