An image proceesing system for radiologic data on conventional computers

Abstract

This thesis work is aimed at the building OI an imageprocessing so£tware, to be realized on a conventional digitalcomputer. Although special and expensive euipment is usuallyrequired for such an image processing system, such equipmentis avoided as much as possible, except the data acquisitionpart. By the construction OI an image processing system onsuch a widely known hardware basis, sharing and availabilityto common usage o£ original or processed image data istargeted.A£ter examining the mathematics of most important andwidely used basic image processing algorithms, difIerentimplementational issues is evaluated in order to includebest solutions to a gi~en image processing problem into theso£tware. DifIerent software techniques are used to approachthe implementational problems of a given task in order toimprove the total e£fectiveness of the image processingso£tware.The implemented algorithms are classi£ied into groupsand subgroups in an e£fort to help understanding of differentalgorithms that can be executed on a given image data sequentially and the most important and most widely used algorithmsfrom each main group have been given more attention.Also efforts have been spent for the main user interfaceof the image processing software to provide a consistent andmenu-driven system and interactive usage. This approach leadsto ease of learning and use.Although the data acquisition section of such a study isnot directly implemented in this thesis work, an example ofsuch an interface within the data resource and theconstructed image processing system is also dealt with. Forthis purpose, an eight inch diskette driver is used and adisk drive controller to act as an interface between thisdevice and the host computer is constructed. Thus it is madepossible to read the data which was saved on these disketteson computerized tomogra~hy devices as storage datapreviously.