Rays of light -> Picture
Illumination, optics, sensor, processing, display
make an image a “computable” object
A digital image
digital image – pixel and image resolution
discrete (matrix) and continuous (function) representations
grayscale and color images
digital image formats
A digital image(W X H)
column and rows
width, height
square image -> 512 x 512 pixels = 262 = 0.26mp image
mp: mega pixel image
Numeric representation in 2-D (x and y)
Referred to as I(x,y) in continuous function from I(i,j) in discrete
Image resolution expressed in terms of width and height of the image
