SemiRefiner: Learning to Refine Semi-realistic Paintings

The previous image optimization methods cannot complete the automatic refinement of semi-realistic paintings. Aiming at improving the efficiency of refinement manually, we propose an automatic refinement method for semi-realistic figure paintings guided by the line art. In order to enable the framework to adjust the draft color in the refinement process like a real painter, we design a color correction module, which automatically fixes the inappropriate color in the draft. In order to reduce artifacts and generate high-quality results, we use the line art to guide the refinement. We further devise a line art optimization module in the framework to ensure generation of high quality results by improving the quality of the line art. The experimental results and user surveys demonstrate the effectiveness of the proposed method.