Multimedia part 1

Question 1

Computer Graphics ?

Answer 1

It’s representation of image data by a computer specifically with help from specialized
such as : Hardware: Graphics Cards and Cameras
Software: Adobe Photoshop and Unity

Question 2

Graphics Terminology ?

Answer 2

Pixels ( smallest element in an image)
( square shape)
Image Dimensions ( Is measured by the Width x Height of a digital image )

Question 3

What are the types of graphics ?

Answer 3

Bitmap Graphics ( Raster graphics)
Vector Graphics ( object oriented graphics)

Question 4

Painting pixels on the screen with a pointing device like mouse capturing an image with a digital camera is ? ( painting software’s)

Answer 4

Bitmap Graphics ( Raster graphics)

Question 5

Pointer movements translated into lines and patterns on screen using mathematical formulas ?

Answer 5

Vector Graphics (Object Oriented Graphics)

Question 6

Color depth / bit depth ?

Answer 6

Is the number of bits devoted to each pixel

Question 7

Each pixel represented by 1 bit ( black or white) ? 1 or 0

Answer 7

Simple bit mapped (monochrome)

Question 8

How to calculate the file size of a simple bitmap image with dimensions 250x 200 ?

Answer 8

Total Number of pixels in the image = 250 * 200 = 50,000 pixels
File size = 50,000 pixels * 1 bit/pixel = 50,000 bits
[1 byte = 8 bits]

Question 9

Gray- scale graphics ?

Answer 9

Uses 8 bits per pixel ( ex allows up to 256 different shades )

Question 10

How to calculate the file size of a gray scale image with dimensions 250 x 200 ?

Answer 10

Total Number of pixels in the image = 250 * 200 = 50,000 pixels

File size = 50,000 pixels * 8 bit/pixel = 400,000 bits ~ 50,000 bytes

Question 11

Color depth ?

Answer 11

Modern PCs uses 24-bit (True Color) to display millions of colors at a time , photorealistic color such as RGB: (Red, Green, Blue)

Question 12

Is a measurement of the pixel density of an image measured in ( inch ppi) ?

Answer 12

Resolution

Question 13

What is object oriented Graphics / ( vector Graphics) ?

Answer 13

Are scalable graphics that are built using mathematical formulas

Question 14

What is advantage of vector graphics ?

Answer 14

That they can be resized without losing image quality like : Drawing software’s ( Inkscape)

Question 15

Differences between Bitmap and vector ?

Answer 15

Bitmap ( stores as dots )
More memory / Good for paintings
Texture and shading

Vector ( stores as objects)
Less memory / Lines cleaner
Good for graphs , charts ( 3D)

Question 16

Image processing ?

Answer 16

Filtering and cleaning : ( Eliminate red eye)
Enhancing and editing :
Can distort and merge photos as in tabloids
Can create fabricated images (which looks real)

Question 17

What are examples of image processing ?

Answer 17

Medical field help doctors clean x ray images

Question 18

What is natural language processing ?

Answer 18

Cleaning Captcha Phrases

Question 19

What detects presence of any life- sustaining resources ?

Answer 19

Images from Moon and Mars missions

Question 20

A field that includes methods for acquiring
processing, analyzing, and understanding images Such as: Object detection ?

Answer 20

Computer Vision

Question 21

Is the process of developing a mathematical representation of any surface of an object such as : Blender ?

Answer 21

3D modeling software

Question 22

What is CAD ? ( computer aided design)

Answer 22

Is the use of computer systems to assist in the
creation analysis or optimization of a
design
Cheaper and faster
Such as :
Architects build virtual plans
Design computer chips: PCB (Printed Circuit Boards)
Test product prototypes

Question 23

What is CAM ? ( computer aided manufacturing)

Answer 23

Is the use of software to control machine tools to help manufacture products
and
Translates the design of a product created on computer with CAD tools

Question 24

It’s Combination of CAD/CAM
which is the manufacturing approach of using computers to control the entire production process is ?

Answer 24

CIM (Computer Integrated Manufacturing )

Question 25

what are the major steps towards fully automated factory ?

Answer 25

Increased productivity , Enhanced flexibility
and Improved quality

Question 26

What presentation graphics used for ?

Answer 26

Lectures , Sales demons and Projectors
Example : MS power point