| 摘要 |
A method, apparatus, and system for combining a first signal and a second signal is disclosed, e.g., superimposing graphic signals on video signals. A first signal containing an object and an object indicator, e.g., a chroma key background color or a separate signal indicating presence or absence of an object, is used to determine weighting values for pixels at the edges of the object. The weighting values are then used to blend the first signal and a second signal at the edges of the object to minimize sharp transitions, thereby minimizing aliasing.
|
