A.Pritha, D.Santhi Jeslet
An image is a 2D rectilinear array of pixels.An image is a two-dimensional function f(x,y), where x and y are the spatial (plane) coordinates, and the amplitude of f at any pair of coordinates (x ,y) is called the intensity of the image at that level. If x, y and the amplitude values of f are finite and discrete quantities, we call the image a digital image. A digital image is composed of a finite number of elements called pixels, each of which has a particular location and value. Digitization implies that a digital image is an approximation of a real scene .This paper describes about the methods of processing the image. Finally, Dithering and Halftonic techniques were discussed to solve the errors of gray scale image processing.
Digitization, Pixels, Electromagnetic Energy Spectrum, Image Acquisition ,Illumination Source, Sensoring Image.