A Segmentation Scheme for Head-Shoulder in MPEG Compressed Domain

More attention has been paid to the study of video object segmentation in compressed domain these years, which has already led to some practical technology. In this paper, a scheme is put forward for segmentation of head-shoulder video in MPEG compressed domain. The conception of DCT feature plane is defined in this paper. In the suggested scheme, firstly, the face region is detected by clustering skin-tone DCT feature points in the DCT feature plane; Secondly, the region of head-shoulder is approximately regarded as combination of the Head Rectangle and Shoulder Rectangle and Head Rectangle is confirmed by double template matching; Thirdly Canny operator and morphological operation are applied to the region of head-shoulder in feature plane to get the object mask and the region of object mask is rectified by correlation of DCT blocks to get high-quality segmentation.