Geometrical oddments. [I.]

Electromagnetic Scintillation I. Geometrical Optics

Coset codes-I: Introduction and geometrical classification

Practically all known good constructive coding techniques for band-limited channels, including lattice codes and various recently proposed trellis-coded modulation schemes, can be characterized as coset codes. A coset code is defined by a lattice partition A / A and by a binary encoder C that selects a sequence of cosets of the lattice A'. The fundamental coding gain of a coset code, as well as...

Unit 5. Geometrical Processes I: Morphology

Introduction to Segmentation. A blob is an object in an image whose gray levels distinguish it from the background and other objects. For example, it could be a cancer cell or bacterium, an airplane, or a part to be attached to a subassembly. It is a type of region, which is a connected set of pixels that have one or more similary properties that are different than the surrounding pixels. Segme...

Unit 5. Geometrical Processes I: Morphology

Segmentation of an image is a process of finding any blobs or determining regions of interest in a certain context. The context may be simple, such as graylevel only, or more complex such as graylevel, closeness and on the same side of an edge. Before any segmentation is done, processes of contrast stretching, histogram equalization, despeckling and light smoothing or other noise removal can be...

Keynote Talk I Geometrical Approach to Big Data

The Big Data paradigm is one of the main science and technology challenges of today. Big data includes various data sets that are too large or too complex for efficient processing and analysis using traditional as well as unconventional algorithms and tools. The challenge is to derive value from signals buried in an avalanche of noise arising from challenging data volume, flow and validity. The...