| 摘要 |
The invention relates to a method for generating a large static image M(n), such as a sprite or a mosaic, from a video sequence. This method first comprises, in view of a first accretion step, an estimation of the motion parameters related to the video objects of the sequence, with respect to the previously generated static image. Each video objects is then warped on the basis of said parameters, and the warped video objects are blended with the previously generated static image. According to the invention, said method also comprises (n-1) further accretion steps, but applied this time to the same video sequence considered in the reverse order. Each additional accretion step itself includes a warping sub-step, based on each successive video object considered in said reverse order and on the corresponding motion parameters already estimated, and a blending sub-step, pixel-based or region-based weighting coefficients being then computed in order to be taken into account during the blending steps. |
