Patent ID: 6940910

Claim:
A method of detecting dissolve/fade in an MPEG-compressed video environment, comprising: detecting a candidate sequence that is presumed to use a dissolve/fade editing effect according to shot transition detection in a video sequence; finding if spatio-temporal macro block type distribution that characteristically appears in a dissolve/fade sequence arises in the dissolve/fade candidate sequence, to judge if a scene transition by dissolve/fade was used in the detected dissolve/fade candidate sequence; and when the spatio-temporal macro block type distribution in the dissolve/fade sequence continuously appears in the dissolve/fade candidate sequence, comparing the length of the candidate sequence with a predetermined critical value and judging that the candidate sequence is a dissolve/fade sequence when its length is longer than the critical value, wherein the judging if the dissolve/fade editing effect was used in the candidate sequence using the spatio-temporal macro block type distribution uses spatio-temporal macro block type distribution and its variation characteristics in B-frames that simultaneously use bi-directional prediction in compression domain, and wherein the judging if the dissolve/fade editing effect was used in the candidate sequence using the spatio-temporal macro block type distribution comprises, setting B-frames whose macro block type distribution satisfies “B-frame macro block type characteristic in a dissolve/fade sequence” among the B-frames adjacent to the anchor frames in the dissolve/fade candidate sequence to a first prescribed value and setting other B-frames to a second prescribed value, and obtaining a run having a maximum length among the runs set to the first prescribed value.