ABSTRACT
The environment of medical imaging has changed dramatically by changing from analogue to digital technology. The widely used techniques are computed tomography (CT), Doppler imaging, magnetic resonance imaging (MRI), functional MRI and many others. The main task of image processing is converting the pictures into digital form. A diversity of problems in image processing range from image perception to image interpretation. Low-level image processing is concerned with the pixels, which initially enhances or filters the image, that is, it preprocesses the image. The next level of the image processing is concerned with the regions in the image. Here, the features of different regions or objects are extracted. The next process is high-level processing where the whole or parts of the image or series of the images are considered. The images are segmented for classification and recognition and finally interpretation. In the high level, the knowledge of experts is involved for making decisions. The following are the steps that are required in medical image processing.
