02-04-2010, 03:44 PM
Abstract
Interest in digital image processing methods stems from two principal application areas: improvement pictorial information for human interpretation; and processing of image data for storage, transmission, and representation for autonomous machine perception.
Digital image processing refers to processing digital images by means of a digital computer. Note that digital image is composed of finite number of elements, each of which has a particular location and value.
There will be disturbances in every aspect digital image processing has no exception. Digital image processing also suffers from some sort of disturbances from external sources and others. This is going to be discussed in this aspect.
As we know that the images could be in the form of analog signals there is a need to convert these signals to digital form which can be done by plotting the image using different transfer functions which are explained here under. A transfer function maps the pixel values from the CCD (Charge coupled device) to the available brightness values in the imaging software all the images so far have been plotted using linear transfer functions
Filter masks and other manipulations have also discussed in this aspect in order to make the image filter and get a clear cut form of the image.
