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3DIM
2005
IEEE
14 years 1 months ago
Fitting of 3D Circles and Ellipses Using a Parameter Decomposition Approach
Many optimization processes encounter a problem in efficiently reaching a global minimum or a near global minimum. Traditional methods such as Levenberg-Marquardt algorithm and t...
Xiaoyi Jiang, Da-Chuan Cheng
SP
1997
IEEE
126views Security Privacy» more  SP 1997»
13 years 12 months ago
Filtering Postures: Local Enforcement for Global Policies
When packet filtering is used as a security mechanism, different routers may need to cooperate to enforce the desired security policy. It is difficult to ensure that they will d...
Joshua D. Guttman
SODA
2008
ACM
156views Algorithms» more  SODA 2008»
13 years 9 months ago
Approximating TSP on metrics with bounded global growth
The Traveling Salesman Problem (TSP) is a canonical NP-complete problem which is known to be MAXSNP hard even on Euclidean metrics (of high dimensions) [40]. In order to circumven...
T.-H. Hubert Chan, Anupam Gupta
ITCC
2005
IEEE
14 years 1 months ago
Fuzzy-based Parameterized Gaussian Edge Detector Using Global and Local Properties
Many edge detection schemes suffer from the lack of image quality at the global level. Global properties are more vital in grayscale images due to loss of hue and texture. This pa...
John See, Madasu Hanmandlu, Shantaram Vasikarla
FOCS
2008
IEEE
14 years 2 months ago
Clock Synchronization with Bounded Global and Local Skew
We present a distributed clock synchronization algorithm that guarantees an exponentially improved bound of O(log D) on the clock skew between neighboring nodes in any graph G of ...
Christoph Lenzen, Thomas Locher, Roger Wattenhofer