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Object Recognition from Local Scale-Invariant Features

by David G. Lowe
"... An object recognition system has been developed that uses a new class of local image features. The features are invariant to image scaling, translation, and rotation, and partially invariant to illumination changes and affine or 3D projection. These features share similar properties with neurons in ..."
Abstract - Cited by 2739 (13 self) - Add to MetaCart
in inferior temporal cortex that are used for object recognition in primate vision. Features are efficiently detected through a staged filtering approach that identifies stable points in scale space. Image keys are created that allow for local geometric deformations by representing blurred image gradients

A Growing Neural Gas Network Learns Topologies

by Bernd Fritzke - Advances in Neural Information Processing Systems 7 , 1995
"... An incremental network model is introduced which is able to learn the important topological relations in a given set of input vectors by means of a simple Hebb-like learning rule. In contrast to previous approaches like the "neural gas" method of Martinetz and Schulten (1991, 1994), this m ..."
Abstract - Cited by 401 (5 self) - Add to MetaCart
), this model has no parameters which change over time and is able to continue learning, adding units and connections, until a performance criterion has been met. Applications of the model include vector quantization, clustering, and interpolation. 1 INTRODUCTION In unsupervised learning settings only input

Dynamic Real-Time Deformations using Space Time Adaptive Sampling

by Gilles Debunne, Mathieu Desbrun , Marie-Paule Cani, Alan H. Barr , 2001
"... This paper presents a robust, adaptive method for animating dynamic visco-elastic deformable objects that provides a guaranteed frame rate. Our approach uses a novel automatic space and time adaptive level of detail technique, in combination with a largedisplacement (Green) strain tensor formulation ..."
Abstract - Cited by 226 (14 self) - Add to MetaCart
This paper presents a robust, adaptive method for animating dynamic visco-elastic deformable objects that provides a guaranteed frame rate. Our approach uses a novel automatic space and time adaptive level of detail technique, in combination with a largedisplacement (Green) strain tensor

Pose Space Deformation: A Unified Approach to Shape Interpolation and Skeleton-Driven Deformation

by J. P. Lewis, Matt Cordner, Nickson Fong , 2000
"... Pose space deformation generalizes and improves upon both shape interpolation and common skeleton-driven deformation techniques. This deformation approach proceeds from the observation that several types of deformation can be uniformly represented as mappings from a pose space, defined by either an ..."
Abstract - Cited by 280 (4 self) - Add to MetaCart
Pose space deformation generalizes and improves upon both shape interpolation and common skeleton-driven deformation techniques. This deformation approach proceeds from the observation that several types of deformation can be uniformly represented as mappings from a pose space, defined by either

View-dependent simplification of arbitrary polygonal environments

by David Luebke, Carl Erikson , 1997
"... Hierarchical dynamic simplification (HDS) is a new approach to the problem of simplifying arbitrary polygonal environments. HDS operates dynamically, retessellating the scene continuously as the user’s viewing position shifts, and adaptively, processing the entire database without first decomposing ..."
Abstract - Cited by 286 (15 self) - Add to MetaCart
the environment into individual objects. The resulting system allows real-time display of very complex polygonal CAD models consisting of thousands of parts and hundreds of thousands of polygons. HDS supports various preprocessing algorithms and various run-time criteria, providing a general framework for dynamic

Wires: A Geometric Deformation Technique

by Karan Singh , Eugene Fiume , 1998
"... Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable featu ..."
Abstract - Cited by 171 (7 self) - Add to MetaCart
Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable

Recognition of Shapes by Editing Their Shock Graphs

by Thomas B. Sebastian, Philip N. Klein, Benjamin B. Kimia , 2004
"... This paper presents a novel framework for the recognition of objects based on their silhouettes. The main idea is to measure the distance between two shapes as the minimum extent of deformation necessary for one shape to match the other. Since the space of deformations is very high-dimensional, thr ..."
Abstract - Cited by 204 (8 self) - Add to MetaCart
This paper presents a novel framework for the recognition of objects based on their silhouettes. The main idea is to measure the distance between two shapes as the minimum extent of deformation necessary for one shape to match the other. Since the space of deformations is very high

Spatio-Temporal Data Types: An Approach to Modeling and Querying Moving Objects in Databases

by Martin Erwig, Ralf Hartmut Güting, Markus Schneider, Michalis Vazirgiannis , 1999
"... Spatio-temporal databases deal with geometries changing over time. In general, geometries cannot only change in discrete steps, but continuously, and we are talking about moving objects. If only the position in space of an object is relevant, then moving point is a basic abstraction; if also the ext ..."
Abstract - Cited by 167 (37 self) - Add to MetaCart
Spatio-temporal databases deal with geometries changing over time. In general, geometries cannot only change in discrete steps, but continuously, and we are talking about moving objects. If only the position in space of an object is relevant, then moving point is a basic abstraction; if also

Ordered and Quantum Treemaps: Making Effective Use of 2D Space to Display Hierarchies

by Benjamin B. Bederson, Ben Shneiderman, Martin Wattenberg, Dow Jones Smartmoney. Com - ACM Transactions on Graphics (TOG , 2002
"... Treemaps, a space-filling method of visualizing large hierarchical data sets, are receiving increasing attention. Several algorithms have been proposed to create more useful displays by controlling the aspect ratios of the rectangles that make up a treemap. While these algorithms do improve visibili ..."
Abstract - Cited by 194 (14 self) - Add to MetaCart
visibility of small items in a single layout, they introduce instability over time in the display of dynamically changing data, fail to preserve order of the underlying data, and create layouts that are difficult to visually search. In addition, continuous treemap algorithms are not suitable for displaying

Dynamic View-Dependent Simplification for Polygonal Models

by Julie C. Xia, Amitabh Varshney , 1996
"... We present an algorithm for performing view-dependent simplifications of a triangulated polygonal model in real-time. The simplifications are dependent on viewing direction, lighting, and visibility and are performed by taking advantage of image-space, objectspace, and frame-to-frame coherences. A c ..."
Abstract - Cited by 186 (1 self) - Add to MetaCart
continuous level-of-detail representation for an object is first constructed off-line. This representation is then used at run-time to guide the selection of appropriate triangles for display. The list of displayed triangles is updated incrementally from one frame to the next. Our approach is more effective
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