CSEL311

Question 1

The computer is an __________

Answer 1

information processing machine

Question 2

It is a tool for _______, ________, and _______ data.

Answer 2

storing, manipulating, correlating

Question 3

It displays the information in the form of graphics objects like ____, ______, _____, and ______.

Answer 3

pictures, charts, graphs and diagrams

Question 4

Computer graphics makes it possible to express data in ______

Answer 4

pictorial form

Question 5

Pictures or graphics objects are presented as a collection of discrete picture elements called _______.

Answer 5

pixels

Question 6

It is the smallest addressable screen element. It is the smallest piece of the display screen which we can control.

Answer 6

pixels

Question 7

Thus we can say that computer graphics concerns the ___________ of real or imaginary objects.

Answer 7

pictorial synthesis

Question 8

The image processing can be classified as (IE)

Answer 8

image enhancement

Question 9

The image processing can be classified as (PDR)

Answer 9

pattern detection and recognition

Question 10

The image processing can be classified as (SA & CV)

Answer 10

scene analysis and computer vision

Question 11

It deals with the detection and clarification of standard patterns and finding deviations from these patterns.

Answer 11

pattern detection and recognition

Question 12

Example of pattern detection and recognition

Answer 12

optical character recognition (OCR) technology

Question 13

With ________, users can also control the animation by adjusting the speed, the portion of the total scene in view, the geometric relationship of the objects in the scene to one another, the amount of detail shown and so on.

Answer 13

interactive graphics

Question 14

The interactive graphics provides a tool called _______. With this tool, user can move and tumble objects with respect to a stationary observer, or he can make objects stationary and the viewer moving around them.

Answer 14

motion dynamics

Question 15

The interactive graphics also provides a facility called ________. With this, it is possible to change the shape, colour or other properties of the objects being viewed.

Answer 15

update dynamics

Question 16

With the recent development of ____________(DSP) and ________, the interactive graphics can now provide audio feedback along with the graphical feedbacks to make the simulated environment even more realistic.

Answer 16

digital signal processing, audio synthesis chip

Question 17

Pictures found on the Web and photos you import from your digital camera are ________

Answer 17

raster graphics

Question 18

Raster graphics are made up of a grid of pixels, commonly referred to as ______. The larger it is, the bigger the size.

Answer 18

bitmap

Question 19

Raster graphics can typically be scaled down with no loss of quality, but enlarging a bitmap image causes it to look _____ and ________

Answer 19

blocky and pixelated

Question 20

________ are often used for certain images, such as company logos, which need to be scaled to different sizes.

Answer 20

vector graphics

Question 21

Making use of sequential commands or mathematical statements or programs which place lines or shapes in a 2-D or 3-D environment is referred to as ___________

Answer 21

vector graphics

Question 22

The main difference between vector and raster graphics is that raster graphics are composed of ______, while vector graphics are composed of _____

Answer 22

pixels, paths

Question 23

A ______ ______, such as a gif or jpeg, is an array of pixels of various colours, which together form an image.

Answer 23

raster graphic

Question 24

Similar to the naive line-drawing algorithm, with minor variations.

Answer 24

Digital Differential Analyzer (graphics algorithm)

Question 25

Optimized to use only additions (i.e. no divisions or multiplications); it also avoids floating-point computations.

Answer 25

Bresenham's line algorithm

Question 26

_______ polygon has no interior angle greater than 180° (it has no inward-pointing sides).

Answer 26

convex

Question 27

_______ polygon has at least one interior angle greater than 180°. It must have at least 4 sides.

Answer 27

concave

Question 28

______ polygon encloses a single interior space (boundary) and does not have self-intersecting sides

Answer 28

simple

Question 29

_______ polygons have self-intersecting sides

Answer 29

complex

Question 30

An _________ polygon does not have congruent sides and interior angles.

Answer 30

irregular

Question 31

A _______ polygon has congruent sides and interior angles.

Answer 31

regular

Question 32

_______ is a representation of the surface. It is primitive which is closed in nature. It is formed using a collection of lines. It is also called a many-sided figure.

Answer 32

polygon

Question 33

The lines combined to form polygons are called _____ or _____.

Answer 33

sides or edges

Question 34

The lines of a polygon are obtained by combining two ________.

Answer 34

vertices

Question 35

The polygon edges are being intersected with the scanline.The polygon is filled with colours in between the intersecting pairs.

Answer 35

Scan-Line Algorithm

Question 36

Fill colour option is used rather than on the object boundary. Fill clour replaces the interior colour. The pixels are filled by using either Four-connect or Eight-connect method.

Answer 36

Flood Fill Algorithm

Question 37

A point inside an object is picked and is filled until the boundary is hit by the object. This algorithm works only when the colour of the boundary is different from the colour that is used for filling.

Answer 37

Boundary Fill Algorithm

Question 38

The pixels are used by placing them on four different sides of the current pixel till a different colour boundary is identified.

Answer 38

4-Connected Polygon

Question 39

8-connected pixels are used in this technique by adding the pixels above, below, right and left side of the current pixels. The pixels are fixed diagonally such that the complete area of the current pixel is covered. The process is continued till a boundary is found with different colour.

Answer 39

8-Connected Polygon