| 摘要 |
A technique for deriving multiple free-form curves from two or more key-frames such as may be used for segmenting portions of a sequence of static images. A user defines a free-form shape on a first key-frame. The free-form shape is then overlaid on a second key-frame. The user is allowed to make edits to the free-form shape in the second key-frame, and the information concerning these edits is recorded. The shape of the free-form curve for intermediate frames occurring between the first and second key-frames is then determined using the recorded edit information. |
