Depth constrained superpixel-based depth map refinement

-31 Abstract DEPTH CONSTRAINED SUPERPIXEL-BASED DEPTH MAP REFINEMENT A method of forming a refined depth map DR of an image I using a binary depth map D, of the 5 image, said method comprising segmenting (315) the image into a superpixel image SREP, defining (330) a foreground and a background in the superpixel image SREP , to form a superpixel depth map Ds, intersecting (450) the respective foreground and the background of the superpixel depth map Ds with the binary depth map D, determined independently of the superpixel image SREP, to define a trimap T consisting of a foreground region, a background 10 region and an unknown region, and forming the refined binary depth map DR of the image from the trimap T by reclassifying (355, 365) the pixels in the unknown region as either foreground or background based on a comparison (510) of the pixel values in the unknown region with pixel values in at least one of the other trimap regions. PARRAAA / 7AlAQn 1 / niDczcrintinn 91 nr19 q 31 D(See Fi.4) 394 391r 38 4 1 segmernttin Create trimap35 305 385iv S Ixel e 392h Trimap, rep'n Srep 398 39T (See Fig. 5) 32 396 " 386 Average depth ->Image matting Super387 360 /Alpha Crat7S1 - matte Amn Superpixel365 degetapo 3lCeaet IIa5 3Thresholding 370 ,eL, n~biar dep \38 9\ Th Fig. 3 map, D) P066000/ 74629421 /Drawings 210513