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<p> The "microelectronic revolution" and the accompanying decrease in the cost of semiconductor memory has increased the availability of raster-scan graphical displays, yet, as pointed out in a recent survey [BAE79], the implementation of graphics software for raster-scan systems has lagged behind that for random-scan systems. The aim of the work described in this report has been to apply random-scan display techniques to a system employing a relatively inexpensive raster-scan device. The system, incorporating a segmented display file processor, is implemented on a KIM^TM microcomputer. The display device is composed of a Micro Technology Unlimited^TM (MTU) 8K Visable Memory^TM (VM) video board and a standard TV monitor.</p> / Thesis / Master of Science (MSc)

<p> The design of a flexible, high speed, raster scan graphics terminal is presented. The design is presented in general architectural terms rather than from a detailed circuitry point of view.</p> <p> Control is divided between the 'main' microprocessor, an Intel 8086, and a subservient graphics controller which consists of a microprogrammable, bit-sliced, AM2903/2910 special purpose microprocessor. The high speed graphics controller is microprogrammed to accept basic line and circle generating commands. The configuration is felt to represent an efficient balance between simplicity and speed.</p> / Thesis / Master of Science (MS)

<p>Microwave imaging is a promising new imaging modality under research for breast cancer detection. This technique images/reconstructs the internal dielectric composition of the breasts and relies on the contrast between the dielectric properties of malignant tissues and healthy tissues to pinpoint the abnormality. Over the years, new imaging algorithms were proposed and many imaging systems were developed in accordance. However, none of the proposed systems has made it to the market.</p> <p>In this thesis, a prototype planar raster-scanning system for near-field microwave imaging is presented. This system measures the scattering parameters while scanning a 2-D plane over the imaged object (phantom) in a raster pattern. The development of this system aids significantly in our research of microwave imaging for breast cancer detection because it enables us to carry out numerous experiments and to develop and verify new imaging algorithms.</p> <p>Our contribution also lies in conducting a comprehensive study of the dynamic range of the developed system. Each source of noise/uncertainty from the system is identified and studied for the benefits of future improvements.</p> <p>Typical imaging results of phantoms with different dielectric properties are also provided to showcase the performance of the developed system.</p> / Master of Applied Science (MASc)