Patent ID: 7050115

Claim:
A method for detecting a wipe and special effect of a video stream comprising consecutive frames having spatio-temporal relations, wherein the frames are constructed in a unit of macroblocks and wherein the macroblocks include intra-coded macroblocks, the method comprising: detecting an area on which intra-coded macroblocks are concentrated in a frame including macroblocks; and judging whether shot transition by wipe and special effect occurs by applying a spatio-temporal limiting condition to only the consecutive frames having the area on which the detected intra-coded macroblocks are concentrated, wherein the detection of the area on which the intra-coded macroblocks are concentrated is carried out by finding a projection histogram by projecting the intra-coded macroblocks in at least one direction in the compressed domain (space) by taking the intra-coded macroblocks as references and by calculating a ratio of the intra-coded macroblocks projected from the projection histogram in the projecting direction.