Barry Gergel

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A new automatic compression scheme that adapts to any image set is presented in this thesis. The proposed scheme requires no a priori knowledge on the properties of the image set. This scheme is obtained using a unified graph-theoretical framework that allows for compression strategies to be compared both theoretically and experimentally. This strategy(More)
Summary form only given. This paper presents a framework to effectively compress sets of images in a lossless manner. An image set is represented as a graph and its minimum spanning tree is computed to decide which images and differences to encode. The Centroid scheme and the previous MST scheme can both be represented as a spanning tree in our graph. Thus,(More)
Maintainability is a desired property of software, and a variety of metrics have been proposed for measuring it, focusing on different notions of complexity and code readability. Many practices have been proposed to improve maintainability through code refactorings: improving the cohesion, simplification of interfaces, renamings to improve(More)
The automatic compression strategy proposed by Gergel et al. is a near-optimal lossy compression scheme for a given collection of images whose interimage relationships are unknown. Their algorithm uses the root mean square error (RMSE) as a measure of the similarity between two images, in order to predict the compressibility of the difference image. Gergel(More)
A number of minimum spanning tree algorithms have been proposed for lossy compression of image sets. In these algorithms, a complete graph is constructed from the entire image set and possibly an average image, and a minimum spanning tree is used to determine which difference images to encode. In this paper, we propose a hierarchical minimum spanning tree(More)
The GLuskap system for interactive three-dimensional graph drawing applies techniques of scientific visualization and interactive systems to the construction, display, and analysis of graph drawings. Important features of the system include support for large-screen stereographic 3D display with immersive head-tracking and motion-tracked interactive 3D wand(More)
Hypergeometric series are used to approximate many important constants, such as e and Apéry’s constant ζ(3). The evaluation of such series to high precision has traditionally been done by binary splitting followed by integer division. However, the numerator and the denominator computed by binary splitting usually contain a very large common factor. In this(More)