Shading has a great impact to the human perception of 3D objects. Thus, in order to create or to deform a 3D object, it seems natural to manipulate its perceived shading. This paper presents a new solution for the software implementation of this idea. Our approach is based on the ability of a user to coarsely draw a shading, under different lighting directions. With this intuitive process, user...

In this paper we present a 3D facial animation system named FACe! It is able to generate different expressions of the face throughout punctual and combined activation of Action Units, defined by Facial Acting Coding System (FACS). This system is implemented on a 3D human head controlled by bones, riggers and skinning to deform the geometry. The bone system is implemented in order to move single...

From a survey of techniques, a novel method was implemented for creating photo-realistic 3D facial models from 2D images of a subject. Starting from two orthogonal views, a userassisted procedure was employed to recover 3D coordinates of a sparse set of chosen locations on the subject's face. A scattered data interpolation algorithm was then used to deform a generic face mesh to t the particula...

Current deformable part models such as the ones introduced by Felzenszwalb et al. let the parts deform only at a fixed predetermined scale relative to that of the root of the models (typically at twice the resolution). They do so because it allows them to find the optimal placement of each part efficiently, using a fast 2D distance transform algorithm. We demonstrate in this paper that if one s...

In prior work, we extended the well-known form closure grasp framework for rigid parts to a class of deformable parts, modeled as frictionless polygons with a finite element mesh and given stiffness matrix. We define the D-space (deformationspace) of a part as the C-space of all its mesh nodes and deform closure in terms of the work needed to release the part from a set of finger contacts. In t...

Current deformable part models such as the ones introduced by Felzenszwalb et al. [2] let the parts deform only at a fixed predetermined scale relative to that of the root of the models (typically at twice the resolution). They do so because it enables them to find the optimal placement of each part efficiently, using a fast 2D distance transform algorithm. We demonstrate in our paper that if o...

We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface...

This paper presents an interactive 3D modeling system that realizes a new method for modeling 3D objects using non-instrumented hand gestures. Our model representation is based on a mesh library, which is optimized not only for real-time rendering, but also accommodates for changes of both vertex positions and mesh connectivity in real time. For performing the gesture interaction, the user’s ha...

Recent advances in 3D printing technologies bring wide range of applications from fast prototyping to product manufacturing. However, one intrinsic limitation of 3D printing is that we cannot fabricate a single object that is larger than the working volume of a 3D printer. To address this issue, we may partition the given object into 3D parts of manageable sizes for printing, and then assemble ...