(1−ν)dΩ:segmentationfitting +α1∫Ω||∇τa(ψ)||dΩ+?a(u,ψ;ϕ1,γ1):image regularisation+constraint +α2∫Ω||∇τb(ω)||dΩ+?b(κ,ω;ϕ2,γ2):blur .