Question 1:
Standard color printing uses the four ink colors: cyan, magenta, yellow and black.
a) Describe why this is so.
b) What benefits are there in using more than these four ink colors?
Question 2:
Explain an algorithm for transforming a grayscale image to a bi-level (black and white) image while retaining as good a quality as possible. Your algorithm must be for the situation where each grayscale pixel maps to a single bi-level pixel.
Question 3:
Explain the operations on images that accomplish the given effects:
a) Lighten an image which is too dark.
b) Remove salt and pepper noise (‘shot noise’) from an image.
c) Locate 45o edges in an image.
d) Convert a color image (in RGB format) to a grayscale image while preserving the perceived luminance.