The Importance Of Digital Image Processing

Digital Image Processing is one of the fast pace growing and intresting field in the subject of computer Engineering.Its importance can be shown by the fact that it is disciplinary subject that is part of different branches of engineering.
Firstly to get idea about digital image processing we should know the exact definition of image."A image can be said as two dimensional function f(x,y),where x and y are plane coordinate.Amplitudes of 'f' at any pair of co-ordinates (x,y) is known as intensity or gray level of image at that point.when both a (x,y) and amplitude values of'f' are all finite and discrete quantities,we say image a digital image.
Digital processing may be defined as
1.Subject in which both input and ouput are images.
2.Process

In,satellite image processing photographs of a earth and other celestial bodies is taken by artrfical satellite present in celestial space.But due to sensor induced defects,satellite images has to corrected.process of correcting these images for haze,cloud by overlaying the 2D satelite image on 3D surface of earth is called satellite image processing. some of the applications are meteorology,oceanography,biodiversity conservation,cartography,regional planning,warfare etc.interpretation of satellite imagery is conducted by using special techniques known as remote sensing applications using electromagnetic radiations.images are in visible ranges or in other spectra of em waves.

Digital photography is also one of the most important facet of digital image processing.In this array of Photodetectors are used to captur image focused by lens ,against that of an exposure on photographic film.Image is digitized and stored as image file in computer for further processing and printing.Earlier chemical photographic processing was used which was inefficient.by using digital photography we have greater control on