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GMP
2006
IEEE
112views Solid Modeling» more  GMP 2006»
14 years 1 months ago
Tuned Ternary Quad Subdivision
A well-documented problem of Catmull and Clark subdivision is that, in the neighborhood of extraordinary point, the curvature is unbounded and fluctuates. In fact, since one of th...
Tianyun Ni, Ahmad H. Nasri
CVPR
2009
IEEE
1517views Computer Vision» more  CVPR 2009»
15 years 2 months ago
Linear Solution to Scale and Rotation Invariant Object Matching
Images of an object undergoing ego- or camera- motion often appear to be scaled, rotated, and deformed versions of each other. To detect and match such distorted patterns to a s...
Hao Jiang, Stella X. Yu
ICASSP
2011
IEEE
12 years 11 months ago
Bound-ratio minimization of filter bank frames by periodic precoding
Frame (upper and lower) bound ratio is a key factor of numerical stability of frame systems. While tight frames, of which the minimal ratio 1 is achieved, are much preferred in ma...
Li Chai, Jingxin Zhang
ICPR
2000
IEEE
14 years 8 months ago
Glasses Detection and Extraction by Deformable Contour
To achieve a face recognition system robust to the presence of glasses, we have developped a glasses detection and extraction algorithm. Detection is realized using edge informati...
Zhong Jing, Robert Mariani
ICCTA
2007
IEEE
14 years 2 months ago
A Comparative Study on 2D Curvature Estimators
Curvature is a frequently used property in two-dimensional (2D) shape analysis, directly or for derived features such as corners or convex and concave arcs. This paper presents cur...
Simon Hermann, Reinhard Klette