Greyscale Image
How an image look like ! obviously as it looks.
Lets have a different look of a 300X300 pixel image shown below and its discrete representation by pixel values itself.
You will be amazed that a simple looking image contains so much of data.
The major portion of image is whitish,so the corresponding values are mostly around 150-190 and it changes with intensity up to 255.
In the following representation one row of data contaning 300 values are shown and such 300 rows are there in the included Image .
A grey scale image can be considered as a 2d matrix such that each location of the matrix contain one value that corresponds to pixel values of the image.
when opened after basic operations this image file looks like