| 摘要 |
A method for encoding an input image including more than an object is provided, wherein if number of contours in an image frame is less than a predetermined number, all the absolute addresses of the initial vertices of the contours are encoded. However, if the number of the contours are greater than or equal to the predetermined number, the contours are divided into a plurality of groups, wherein if a position of an initial vertex in a group is known, relative displacements of all the other vertices in the group can be represented by dynamic ranges determined by the number of the contours. Thereafter, absolute position information of a first initial vertex in each group is encoded using an escape code which is followed by the horizontal and the vertical absolute addresses of the initial vertex. All the remaining initial vertices are encoded based on their displacements from the previously encoded initial vertex and the dynamic ranges. The escade-coded data and the displacement coded data are provided as the encoded initial vertex data. |
