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Full-Text Articles in Physical Sciences and Mathematics
On The Geometries Of Conic Section Representation Of Noisy Object Boundaries, Qiuming Zhu
On The Geometries Of Conic Section Representation Of Noisy Object Boundaries, Qiuming Zhu
Computer Science Faculty Publications
This paper studies some geometrical properties of conic sections and the utilization of these properties for the generation of conic section representations of object boundaries in digital images. Several geometrical features of the conic sections, such as the chord, the characteristic point, the guiding triangles, and their appearances under the tessellation and noise corruption of the digital images are discussed. The study leads to a noniterative algorithm that takes advantage of these features in the process of formulating the conic section parameters and generating the approximations of object boundaries from the given sequences of edge pixels in the images. The …
Using Omissive Faults To Obtain Local Convergence In Partially Connected Networks, M. H. Azadmanesh, A. W. Krings
Using Omissive Faults To Obtain Local Convergence In Partially Connected Networks, M. H. Azadmanesh, A. W. Krings
Computer Science Faculty Publications
Approximate Agreement is an important issue in faulttolerant distributed computing where non-faulty processes exchange and vote upon their local values, to arrive at values which are within the range of the initial values of the nonfaulty processes and within a predefined tolerance of each other. Results to date in Approximate Agreement, however, are not capable of exploiting omission faults. Omission faults are presumed not to occur or a predefined default value is substituted for those values not received, or they are globally discarded before the voting algorithm executes. As a result, hybrid fault models can not differentiate between omissive and …