GRAPHICS ELEMENT

Question 1

is a spatial representation of an object,
a two-dimensional or three-dimensional scene or
another image.

Answer 1

image

Question 2

images reflect the
____ of lights.

Answer 2

intensity

Question 3

Most photographs are called _______ because the method used to develop the photograph creates the illusion of perfect continuous tone throughout the image

Answer 3

continuous-tone images

Question 4

• Images stored and processed by computers,
  displayed on computer screens, are called

Answer 4

digital
images

Question 5

The smallest element on a digital image is known as a

Answer 5

pixel

Question 6

is the number of bits used to represent
each pixel.

Answer 6

depth

Question 7

black-and-white image, also called bitmap image

Answer 7

1-bit

Question 8

can represent 16 colors, used in low resolution screens
(EGA/VGA)

Answer 8

4-bit

Question 9

can have 256 colors. The 256 color images are often
known as indexed color images.

Answer 9

8-bit

Question 10

256 grey-levels. The image contains only
brightness/intensity data without color information.

Answer 10

8-bit grey

Question 11

can have 65,536 colors, also known
as hi
-color in Windows systems.

Answer 11

16-bit

Question 12

2^24 = 16,777,216 colors, true color.
Each byte is used to represent the intensity
of a primary color, RED, GREEN and BLUE.
Each color can have 256 different levels.

Answer 12

24 -bit

Question 13

2^32= 4,294,967,296 (4G). Usually, 3
bytes are used to represent the three
primary colors and the fourth byte is used
as the alpha channel.

Answer 13

32-bit

Question 14

measures how much detail an image can have

Answer 14

Resolution

Question 15

is the number of pixels in an image.

Answer 15

Image resolution

Question 16

refers to number of dots per inch
(dpi) on a monitor

Answer 16

Display (Monitor) resolution

Question 17

refers to number of dots per inch (dpi) on a
(hard copy) output device.

Answer 17

Output resolution

Question 18

Instead of using pixels, objects can be
represented by their attributes, such as
size, color, location, and so on. This type
of graphics is known as
- This is an abstract representation of a 2-
dimensional or 3-dimensional scene.
* A __ file contains graphics
primitives, for example, rectangles,
circles, lines.

Answer 18

vector graphics,
or vector drawing.

Question 19

There are many languages for describing vector graphics. Three of them are very popular. They are:

Answer 19

PostScript
Virtual Reality Markup
Language
Scalable Vector
Graphic.

Question 20

was developed by Adobe as a page
description language

Answer 20

PostScript

Question 21

It is for describing a
scene in a virtual
world.

Answer 21

Virtual Reality Markup
Language or VRML

Question 22

It is a language for describing two dimensional graphics in XML.

Answer 22

SVG or Scalable Vector
Graphic

Question 23

• contains an exact pixel-by pixel value of an image
• is easier to render

Answer 23

Bitmap

Question 23

three types of graphic
objects

Answer 23

vector graphic shapes,
images and text.

Question 24

- contains mathematical description of objects - involves a large amount of processing

Answer 24

Vector Graphic

Question 25

- is a vital component of multimedia - is a physical property of light,

Answer 25

Color

Question 26

Color perception is a

Answer 26

human physiological activity

Question 27

Choosing a right color or color combination involves many trials and aesthetic judgment (true or false)

Answer 27

true

Question 28

is the frequency/wave-length of a light wave within the narrow band of the electromagnetic spectrum (380 – 760nm) to which the human eye responds.

Answer 28

Color

Question 29

This is probably the most popular color model used in computer graphics.

Answer 29

RGB COLOR MODEL

Question 30

system in which varying amount of the three primary colors, red, green and blue, are added to black to produce new colors.

Answer 30

additive

Question 31

This model is based on the light absorbing quality of inks printed on paper.

Answer 31

CMY COLOR MODEL

Question 32

The three fundamental characteristics of colors

Answer 32

Hue Saturation Brightness

Question 33

the primary colors in RGB and CMY models are

Answer 33

complementary colors.

Question 34

is the wavelength of the light

Answer 34

Hue

Question 35

is the strength or purity of the color

Answer 35

Saturation

Question 36

— is the relative lightness or darkness of the color.

Answer 36

Brightness

Question 37

This model is widely used in encoding color for use in television and video. The theory behind this model is that human perception is more sensitive to brightness than any chrominance information, so a more suitable coding distinguishes between luminance and chrominance.

Answer 37

YUV COLOR MODEL

Question 38

is the range of colors that can be displayed or printed .

Answer 38

gamut

Question 39

is an index table to available colors in an indexed color system.

Answer 39

color palette

Question 40

Each program may have its own palette. It may replace the system palette with its own for the period it is active. This may cause an annoying flash of strange colors in your screen, known as

Answer 40

Palette flashing

Question 41

is a technique to increase the number of colors to be perceived in an image.

Answer 41

Dithering

Question 42

is caused by the limited resolution of an output device

Answer 42

Anti-Aliasing

Question 43

is stored in a file conforming to certain format

Answer 43

digital image

Question 44

Formats using compression will make the file size smaller (true or false)

Answer 44

true

Question 45

sub-areas of DIGITAL IMAGE PROCESSING

Answer 45

Image analysis Image recognition Image enhancement

Question 46

is concerned with techniques for extracting descriptions from images that are necessary for higher-level scene analysis methods.

Answer 46

Image analysis

Question 46

is concerned with the techniques for recovering information about objects in the image.

Answer 46

Image recognition

Question 47

is concerned with the technique to improve the image and to correct some defects, such as, * color and tonal adjustment, * Transformations, e.g., scale, rotate, * Special effects, e.g., texture, stylize, blur, sharpen

Answer 47

* Image enhancement

Question 48

Image editing and processing tools,

Answer 48

* Windows Paint— simple * Adobe Photoshop * MetaCreation Painter * Corel PhotoPaint * Paint Shop Pro— a low cost shareware * The GIMP— an open source program with excellent functions

Question 49

Vector graphics tools

Answer 49

* Adobe Illustrator * Corel Draw * Format conversion tools