if y is conservative If v is the gradient of an image g Correction function f so that f=8+f f performs membrane interpolation over Q2 Af=0 over 2, flag=(f*-glao d9 cc可视计算研究中心• If v is the gradient of an image g • Correction function so that • performs membrane interpolation over Ω: if v is conservative 17 ~ f ~ f = g + f ~ f