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A novel active contour model is proposed by combining region and edge information. Its level set formulation consists of the edge-related term, the region-based term and the regularization term. The edge-related term is derived from the image gradient, and facilitates the contours evolving into object boundaries. The region-based term is constructed using(More)
Craniofacial reconstruction is important in forensic identification. It aims to estimate a facial appearance for human skeletal remains using the relationship between the soft tissue and the underlying bone structure. Various computerized methods have been developed in recent decades. An effective way is to deform a reference skull to the discovered skull,(More)
In this paper, we present an automatic point matching method to overcome the dense point alignment of scanned 3D faces. The thin plate spline (TPS) transformation is adopted to model the deformation of 3D faces, and to get fully automatic point matching method, a random point selecting method is proposed to get the controlling points for TPS transformation.(More)
A novel modeling and representation approach for brushstroke and animation is proposed in this paper based on disk B-spline curve (DBSC). This method represents not only the 2D region of the stroke but also its centerline so that various attributes like scalar and vector field can be applied to the stroke. Given two or more animation drawings represented by(More)
Based on our novel shape and stroke model, Disk B-spline Curve (DBSC), this demo provides user an interactive free-hand drawing system. With a digital tablet the user may draw directly onto the computer a picture whose strokes are then represented by DBSC functions. This representation will not only save space for storing and transmission, but also allow(More)
Craniofacial reconstruction can be applied in many fields such as forensic, archaeology etc. This paper proposes to learn the relationship between the face and the skull by Partial Least Squares Regression (PLSR), and reconstruct a person's face skin from his skull using the relationship. In order to better represent shape variations of skulls and skins, we(More)
This paper proposes a parametric solid representation of freeform tubular objects - Ball B-Spline Curves (BBSCs), which are skeleton based parametric solid model. Their fundamental properties, algorithms and modeling methods are investigated. BBSC directly defines objects in B-Spline function form (not a procedure method, like sweeping), that uses control(More)