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Bas-Relief Modeling from Normal Images with Intuitive Styles

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3 Author(s)
Zhongping Ji ; Sch. of Comput. Sci., Hangzhou Dianzi Univ., Hangzhou, China ; Weiyin Ma ; Xianfang Sun

Traditional 3D model-based bas-relief modeling methods are often limited to model-dependent and monotonic relief styles. This paper presents a novel method for digital bas-relief modeling with intuitive style control. Given a composite normal image, the problem discussed in this paper involves generating a discontinuity-free depth field with high compression of depth data while preserving or even enhancing fine details. In our framework, several layers of normal images are composed into a single normal image. The original normal image on each layer is usually generated from 3D models or through other techniques as described in this paper. The bas-relief style is controlled by choosing a parameter and setting a targeted height for them. Bas-relief modeling and stylization are achieved simultaneously by solving a sparse linear system. Different from previous work, our method can be used to freely design bas-reliefs in normal image space instead of in object space, which makes it possible to use any popular image editing tools for bas-relief modeling. Experiments with a wide range of 3D models and scenes show that our method can effectively generate digital bas-reliefs.

Published in:

Visualization and Computer Graphics, IEEE Transactions on  (Volume:20 ,  Issue: 5 )

Date of Publication:

May 2014

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