Page 18 - DCAP504_Computer Graphics

Avinash Bhagat, Lovely Professional University Unit 2: Colors in Computer Graphics

Unit 2: Colors in Computer Graphics

CONTENTS
Objectives
Introduction
2.1. Color Models
2.1.1 RGB Color Model
2.1.2 CMYK Color Model

2.2. Setting the Color Attributes of Pixels
2.3. Mandelbrot Set
2.4. Julia Set
2.5. Summary
2.6. Keywords

2.7. Self Assessment
2.8. Review Questions
2.9. Further Readings

Objectives

After studying this unit, you will be able to:
• Explain red green blue (RGB) color model
• Define setting the color attributes of pixels

• Explain Mandelbrot set
• Define Julia set
Introduction
Color plays an important role in images. The light enters our eyes in the form of a spectrum with
variation in the wavelengths. Human beings have three kinds of cones in their eyes that respond to
different colors with different wavelengths. The basic colors red, green and blue represents long,
medium and short wavelengths respectively.

Did you know? The human vision is three-dimensional known as principle of trichromacy. According
to this, the spectrum of light is encoded into three values that correspond to the
amount of light absorbed by each type of cone.
This unit gives an overview of the RGB color model, CMYK color model, setting the color attributes of
pixels, Mandelbrot set and Julia set.

2.1 Color Models
Color is a complex, interdisciplinary phenomenon spanning from psychology to physics. As the name
suggests, color model is a model of colors. It can be defined as an organized system, which is used for
the creation of a wide variety of colors starting from a small collection of primary colors.

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