Portrait relief generation from 3D Object

Automatic generation of reliefs from 3D objects has received great attention in the past few years. The existing methods, which have been developed for general relief generation, are not suitable to handle portrait models that have distinct geometrical features. In this paper, we present a novel method for portrait relief modeling which takes mesh deformation as the theoretical basis. In a pre-processing stage, we segment the input model into several meaningful regions so that different portrait regions could be separately processed. To emphasize visually important features, we further compute object saliency and apply normal enhancement. Once the projective direction is selected by users, the input object is transformed into a compressed height field, followed by a Laplacian-based mesh deformation to optimize the height field. The fine details, salient features and depth structures could be well constructed in the final relief. Experiments and comparisons with state-of-the-art methods demonstrate the effectiveness of our method.