منابع مشابه
Warp-based helical implicit primitives
Implicit modeling with skeleton-based primitives has been limited up to now to planar skeletons elements, since no closed-form solution was found for convolution along more complex curves. We show that warping techniques can be adapted to efficiently generate convolution-like implicit primitives of varying radius along helices, a useful 3D skeleton found in a number of natural shapes. Depending...
متن کاملWarp-Based Image Distance
Previous Work: Several prior algorithms attempt to provide a deformation-invariant distance measure. Tangent distance [2] uses a planar approximation to a local image manifold, allowing small spatial transformations to be modeled in pixel space. Because of the planar approximation, tangent distance does not work well for large deformations. The “shape context” method [1] is good at obtaining de...
متن کاملA Warp-Based Feature Tracker
We present the warp tracker, a new system for tracking features through a sequence of images. Employing an automated multi-resolution lattice deformation technique, the warp tracker performs fairly well on its own, and its hierarchical nature naturally lends itself to being integrated with other tracking algorithms for increased accuracy and robustness. Developed specifically for use in next-ge...
متن کاملSubdivision-Curve Primitives: A New Solution for Interactive Implicit Modeling
To remain an attractive model, skeleton-based implicit surfaces have to allow the design and display of shapes at interactive rates. This paper focuses on surfaces whose skeletons are graphs of interconnected curves. We present subdivision-curve primitives that rely on convolution for generating bulge-free and crease-free implicit surfaces. These surfaces are efficiently yet correctly displayed...
متن کاملVisualization of Industrial Structures with Implicit GPU Primitives
We present a method to interactively visualize large industrial models by replacing most triangles with implicit GPU primitives: cylinders, cone and torus slices. After a reverse-engineering process that recovers these primitives from triangle meshes, we encode their implicit parameters in a texture that is sent to the GPU. In rendering time, the implicit primitives are visualized seamlessly wi...
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ژورنال
عنوان ژورنال: Computers & Graphics
سال: 2011
ISSN: 0097-8493
DOI: 10.1016/j.cag.2011.03.027