(An automated radiographic absorptiometry system for quantitative rheumatoid arthritis assessment)
Medical imaging is a field which researches and develops tools and technology to acquire, manipulate and archive digital images which are used by the dimensional function , f, that takes an input two spatial coordinates x and y and returns a value f(x, y). The value f(x, y) is a gray level of the image at that point. The gray level is also called the intensity. Digital images are a discretized partition of the spatial images into small cells which are referred to as pixels – picture elements. Digital image processing is a field for processing digital images using a digital computer. Processing of digital images include operations involving digital images such as acquisition, storage, retrieval, translation, compression, etc.
