Poisson solver as described in "Real-Time Gradient-Domain Painting" by
McCann and Pollard (2008). This implementation covers only the solver, not
differentiation or blending modes. The expected input is a ColorFieldExpr
containing the Laplacian of the desired output.
Poisson solver as described in "Real-Time Gradient-Domain Painting" by McCann and Pollard (2008). This implementation covers only the solver, not differentiation or blending modes. The expected input is a ColorFieldExpr containing the Laplacian of the desired output.