... About lab . ... Video matting refers to a problem of accurate decomposition of given video sequence to background layer, foreground layer and transparency map. The VideoMatting project is the first online benchmark of video matting methods. ... Background . ... Ground-truth alpha (transparency map) . ... To obtain trimaps, we perform morphological operations on ground-truth (GT) alpha mattes and composites by placing ground-truth foregrounds over new backgrounds. ... multiline equation . ...