Patent ID: 6940910
Filing Date: 2005-09-06
Classification: G06K,H04N

Abstract:
1. 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,