The invention relates to a method for converting a plane video to a
stereoscopic video, based on bidirectional tracking and characteristic dot correction, which pertains to the
multimedia technical filed of computers. The method comprises the steps as follows: a whole plane
video sequence is divided into subsequences which have relevant contents; a frame is appointed as a
key frame; foreground object segmentation is carried out to the
key frame, and corresponding depth maps and profile feature points are extracted; bidirectional tracking is carried out to obtain the profile feature points of a non-
key frame; the profile feature points that do not meet the motion
consistency rules is eliminated; the position of each profile feature point in the collection of the profile feature points of the non-key frame is adjusted to be on the profile of a corresponding foreground object so as to obtain the collection of the profile feature points corresponding to each non-key frame of the video subsequences and recover the foreground object profile of the non-key frame, thus the
depth map sequence of an original plane
video sequence is obtained; finally, a
stereoscopic video sequence corresponding to the original plane
video sequence is obtained. Based on the key frame, the method obtains the high-precision
depth map of the video sequence, thus well realizing the conversion from the plane video to the
stereoscopic video.