Recolorization employing region cues
结合区域特性的图像改色算法

Existing recolorization methods could hardly provide pleasant visual result when they were applied to scattered objects, this paper put forward a two-layers propagation algorithm incorporated with regions cues. Firstly, combined regions by over-segmentation with pixels to construct a two layer weight graph. In contrast to previous works which only employed connection between neighboring pixels, it introduced both full-connections in region layer and inter-connections between the pixels and their corresponding regions into this graph additionally. Then it integrated all these connections in a chrominance iteration formulation, not only facilitated propagation of local grouping cues across larger image areas but partly enforced color edit consistency inside each region. Experiment result indicates that even very small amount of user's scribble is good enough for this proposed method to produce wonderful visual effect.