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Quadtree-Based Processing Of Digital Images, Ramin Naderi
Quadtree-Based Processing Of Digital Images, Ramin Naderi
Dissertations and Theses
Image representation plays an important role in image processing applications, which usually. contain a huge amount of data. An image is a two-dimensional array of points, and each point contains information (eg: color). A 1024 by 1024 pixel image occupies 1 mega byte of space in the main memory. In actual circumstances 2 to 3 mega bytes of space are needed to facilitate the various image processing tasks. Large amounts of secondary memory are also required to hold various data sets.
In this thesis, two different operations on the quadtree are presented.
There are, in general, two types of data …
Propagation Of Optical Waves In Tapered Fibers And Metallic Wave Guides, Bahram Zandi
Propagation Of Optical Waves In Tapered Fibers And Metallic Wave Guides, Bahram Zandi
Dissertations and Theses
The equations tor the propagation of Electromagnetic and Optical waves in tapered fibers and metallic waveguides are derived. Solutions are derived for the displacement of the beam from the waveguide axis as a function of distance along the axis, and also tor the beam width as a function of distance. These equations are solved numerically for a variety of tapered guides. Experiments are conducted which verify the theoretical results.