Use Google to find some grayscale JPEG image that may work well as a cover object,
and download the image. Use the word grayscale in the search. Randomize your search
by using for example geographic names (cities, countries) etc. It is not expected that the
image that you end up using would be the same as the image used by anyone else on this
assignment. The image should be at least 500 \times 500 pixels; it need not be too big or else
your computations may be slow. Google allows you to narrow down your search by the
approximate size of the image.
Use imread to load the image into Matlab and confirm that it is grayscale and the bit
depth is 8. If this is not the case, find another image.
